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Pélissier C, Fort E, Fontana L, Hours M. Medical and socio-occupational predictive factors of psychological distress 5 years after a road accident: a prospective study. Soc Psychiatry Psychiatr Epidemiol 2020; 55:371-383. [PMID: 31628512 DOI: 10.1007/s00127-019-01780-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 10/09/2019] [Indexed: 11/25/2022]
Abstract
PURPOSE Psychosocial consequences of road accidents are a major clinical problem that incurs significant social, occupational, and economic costs. The purpose of our study was to assess medical and socio-occupational factors of psychological distress in the severely injured 5 years after a road accident. METHODS A total of 691 of the 1168 subjects enrolled in a prospective cohort of road accident casualties (ESPARR cohort) responded to both standardized follow-up questionnaires at 1 and 5 years, assessing socio-occupational characteristics, physical and psychological sequelae, pain and perceived quality of life. RESULTS One quarter of participants exhibited psychological distress 5 years after the road accident; most of whom are women, with low educational level, and suffering from spinal lesions. After adjusting for several factors, psychological distress at 5 years was predicted by female gender and low educational level, and by several other factors observed 1 year after the road accident: poor self-reported quality of life, attention deficit and symptoms of anxiety. CONCLUSIONS Early-stage improvement in the screening and care of mental disorders in road accident casualties should help to reduce long-term psychological distress.
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Affiliation(s)
- C Pélissier
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, Université Jean Monnet, UMRESTTE, UMR T_9405, 42100, St Etienne, France.
- Pole de Santé Publique, Service de Médecine et Santé au Travail, Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, 69495, Pierre-Bénite, France.
| | - E Fort
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, 69373, Lyon, France
| | - L Fontana
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, Université Jean Monnet, UMRESTTE, UMR T_9405, 42100, St Etienne, France
- Service de Santé au Travail, CHU de Saint-Etienne, Saint-Priest-en-Jarez, France
| | - M Hours
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, 69500, Bron, France
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Fort E, Gadegbeku B, Gat E, Pelissier C, Hours M, Charbotel B. Working conditions and risk exposure of employees whose occupations require driving on public roads - Factorial analysis and classification. Accid Anal Prev 2019; 131:254-267. [PMID: 31336313 DOI: 10.1016/j.aap.2019.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/04/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Several studies of the working conditions of drivers, and in particular on their pace of work, have enabled a better understanding of the risk factors for road accidents that occur during work. However, few studies are available on the risk exposure and working conditions of employees whose occupations involve driving. The purpose of this paper is to identify the different groups of employees occupationally exposed to road risk and to classify them according to working conditions. METHODOLOGY A Multiple Correspondence Analysis (MCA) was implemented on the 41,727 individuals from the SUMER 2010 survey (Medical Monitoring of Occupational Risk Exposure: SUrveillance Médicale des Expositions aux Risques professionnels) and for 45 variables about working conditions. The analysis used 5 categories of weekly driving exposure as a supplementary variable (variable which is not used to perform the MCA): Non-exposure; Exposed <2 h; Exposed 2-10 hours; Exposed 10-20 hours; and Exposed >20 h. The results of the MCA were used to construct an ascending hierarchical classification. RESULTS The first factorial axis differentiates between conventional and unconventional work schedules. Axis 2 differentiates modalities corresponding to the working hours of the most recent working week. The third axis chiefly contrasts persons who have rules to follow with those who have none. An ascending hierarchical classification distinguishes 10 clusters of individuals according to working conditions. Four clusters of employees were excessively exposed to occupational driving. Clusters also have distinct demographic, occupational and psychosocial characteristics. CONCLUSION Analysis of data from the SUMER survey confirms that employees exposed to road risk are particularly affected by atypical work time characteristics, but can be found in all activity sectors and in all types of job.
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Affiliation(s)
- E Fort
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, F- 69373, Lyon, France.
| | - B Gadegbeku
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, F- 69373, Lyon, France
| | - E Gat
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, F- 69373, Lyon, France
| | - C Pelissier
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, Université Jean Monnet, UMRESTTE, UMR T_9405, F- 42100 St Etienne, France
| | - M Hours
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, F- 69373, Lyon, France
| | - B Charbotel
- Univ Lyon, Université Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, F- 69373, Lyon, France
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Fort E, Pélissier C, Fanjas A, Charnay P, Charbotel B, Bergeret A, Fontana L, Hours M. Road casualties in work-related and private contexts: occupational medical impact. Results from the ESPARR cohort. Work 2018; 60:117-128. [PMID: 29843295 DOI: 10.3233/wor-182720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Road accidents may impact victims' physical and/or mental health and socio-occupational life, notably including return to work. OBJECTIVES To assess whether the occupational medical consequences sustained by subjects injured in road accidents occurring in a work-related context differ from those associated with private accidents. METHODS 778 adults who were in work or occupational training at the time of their accident were included. Two groups were distinguished: 354 (45.5%) injured in road accidents occurring in a work-related context (commuting or on duty) and 424 (54.5%) injured in a private accident. The groups were compared on medical and occupational factors assessed on prospective follow-up at 6 months and 1 and 3 years. Multivariate analysis explored for factors associated at 6 months and 1 year with sick leave following the accident and duration of sick leave. RESULTS There were no significant differences between groups for demographic data apart from a slightly higher injury severity in private accidents (32.5% of private accidents with MAIS3+(Maximum Abbreviated Injury Scale greater or equal to 3) vs. 23.7% for work-related accidents, p = 0.007). Victims of work-related accidents were more often on sick leave (OR = 1.8; 95% CI, 1.1-2.9). Although the length of sick leave is higher for work-related accidents that for private accidents, multivariate analysis showed that the injury severity and the post-traumatic stress disorder (PTSD) are significant factors to explain the time to return to work. There were no significant differences according to occupational impact during follow-up, notably including sick-leave duration, number of victims returning to work within 3 years and number of victims out of work due to incapacity. CONCLUSIONS In the ESPARR (follow-up study of a road-accident population in the Rhône administrative county: Etude de Suivi d'une Population d'Accidentés de la Route dans le Rhône) cohort, the fact that a road accident occurred in a work-related context did not affect the occupational consequences.
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Affiliation(s)
- E Fort
- University of Lyon, Université Claude Bernard Lyon 1, Ifsttar, UMR T_9405, F-69373, Lyon, France
| | - C Pélissier
- University of Lyon, Université Claude Bernard Lyon 1, Ifsttar, Université Jean Monnet, UMR T_9405, F-42100 St Etienne, France
| | - A Fanjas
- University of Lyon, Université Claude Bernard Lyon 1, Ifsttar, Université Jean Monnet, UMR T_9405, F-42100 St Etienne, France
| | - P Charnay
- University of Lyon, Université Claude Bernard Lyon 1, Ifsttar, UMR T_9405, F-69500, Bron, France
| | - B Charbotel
- University of Lyon, Université Claude Bernard Lyon 1, Ifsttar, UMR T_9405, F-69373, Lyon, France
| | - A Bergeret
- University of Lyon, Université Claude Bernard Lyon 1, Ifsttar, UMR T_9405, F-69373, Lyon, France
| | - L Fontana
- University of Lyon, Université Claude Bernard Lyon 1, Ifsttar, Université Jean Monnet, UMR T_9405, F-42100 St Etienne, France
| | - M Hours
- University of Lyon, Université Claude Bernard Lyon 1, Ifsttar, UMR T_9405, F-69500, Bron, France
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Lavie C, Rollot F, Durand-Dubief F, Marignier R, Ionescu I, Casey R, Moreau T, Tourniaire P, Hutchinson M, D’Hooghe MB, Laplaud DA, Clavelou P, De Sèze J, Debouverie M, Brassat D, Pelletier J, Lebrun-Frenay C, Le Page E, Castelnovo G, Berger E, Hautecoeur P, Heinzlef O, Durelli L, Clerico M, Trojano M, Patti F, Vukusic S, Alpérovitch A, Carton H, d’Hooghe M, Hommes O, Hutchinson M, Adeleine P, Biron A, Cortinovis-Tourniaire P, Grimaud J, Hours M, Moreau T, Vukusic S, Confavreux C, Chauplannaz G, Confavreux C, Cortinovis-Tourniaire P, Grimaud J, Latombe D, Moreau T, Clanet M, Lau G, Rumbach L, Goas J, Rouhart F, Mazingue A, Roullet E, Madigand M, Hautecoeur P, Brunet P, Edan G, Allaire C, Riffault G, Leche J, Benoit T, Simonin C, Ziegler F, Baron J, Rivrain Y, Dumas R, Loche D, Bourrin J, Huttin B, Delisse B, Gibert I, Boulay C, Verceletto M, Durand G, Bonneviot G, Gil R, Hedreville M, Belair C, Poitevin R, Devoize J, Wyremblewski P, Delestre F, Setiey A, Comi G, Filippi M, Ghezzi A, Martinelli V, Rossi P, Zaffaroni M, Tola M, Amato M, Fioretti C, Meucci G, Inglese M, Mancardi G, Gambi D, Thomas A, Cavazzuti M, Citterio A, Heltberg A, Hansen H, Fernandez O, Romero F, Arbizu T, Hernandez J, De Andres de Frutos C, Geffner Sclarky D, Aladro Benito Y, Reyes Yanes P, Aguilar M, Burguera J, Yaya R, Bonakim Dib W, Arzua-Mouronte D, d’Hooghe M, Sindic C, Carton H, Medaer R, Roose H, Geens K, Guillaume D, Van Zandycke M, Janssens J, Cornette M, Mol L, Weilbach F, Flachenecker P, Hartung H, Haas J, Tendolkar I, Sindrn E, Kölmel H, Reichel D, Rauch M, Preuss S, Poser S, Mauch E, Strausser-Fuchs S, Kolleger H, Hawkins S, Howell S, Rees J, Thompson A, Johnson M, Boggild M, Gregory R, Bates D, Bone I, Hutchinson M, Polman C, Frequin S, Jongen P, Hommes O, Correia de Sa J, Rio M, Huber S, Lechner-Scott J, Kappos L, Ionescu I, Cornu C, Confavreux C, Vukusic S, El-Etr M, Baulieu E, El-Etr M, Schumacher M, Ionescu I, Confavreux C, Cornu C, Vukusic S, Hartung H, Miller D, Hutchinson M, Pugeat M, d’Archangues C, Conard J, Ménard J, Sitruk-Ware R, Pelissier C, Dat S, Belaïsch-Allard J, Athéa N, Büschsenschutz D, Lyon-Caen O, Gonsette R, Boissel J, Ffrench P, Durand-Dubief F, Cotton F, Pachai C, Bracoud L, Vukusic S, Ionescu I, Androdias G, Marignier R, Chauplannaz G, Laplaud D, Wiertlewski S, Lanctin-Garcia C, Moreau T, Couvreur G, Madinier G, Clavelou P, Taithe F, Aufauvre D, Guy N, Ferrier A, De Sèze J, Collongues N, Debouverie M, Viala F, Brassat D, Gerdelat-Mas A, Henry P, Pelletier J, Rico-Lamy A, Lebrun-Frenay C, Lepage E, Deburghraeve V, Edan G, Castelnovo G, Berger E, Hautecoeur P, Blondiau M, Heinzlef O, Coustans M, Clerc C, Rieu L, Lauxerois M, Hinzelin G, Ouallet J, Minier D, Vion P, Gromaire-Fayolle N, Derache N, Thouvenot E, Sallansonnet-Froment M, Tourniaire P, Toureille L, Borgel F, Stankoff B, Grimaud J, Moroianu C, Guennoc A, Tournier-Gervason C, Peysson S, Trojano M, Patti F, D’Amico E, Motti L, Zaffaroni M, Durelli L, Tavella A. Neuraxial analgesia is not associated with an increased risk of post-partum relapses in MS. Mult Scler 2018; 25:591-600. [DOI: 10.1177/1352458518763080] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background: Obstetrical analgesia remains a matter of controversy because of the fear of neurotoxicity of local anesthetics on demyelinated fibers or their potential relationship with subsequent relapses. Objective: To assess the impact of neuraxial analgesia on the risk of relapse during the first 3 months post-partum, with a focus on women who experienced relapses during pregnancy. Methods: We analyzed data of women followed-up prospectively during their pregnancies and at least 3 months post-partum, collected in the Pregnancy in Multiple Sclerosis (PRIMS) and Prevention of Post-Partum Relapses with Progestin and Estradiol in Multiple Sclerosis (POPARTMUS) studies between 1992–1995 and 2005–2012, respectively. The association of neuraxial analgesia with the occurrence of a post-partum relapse was estimated by logistic regression analysis. Results: A total of 389 women were included, 215 from PRIMS and 174 from POPARTMUS. In total, 156 women (40%) had neuraxial analgesia. Overall, 24% experienced a relapse during pregnancy and 25% in the 3 months post-partum. Women with a pregnancy relapse were more likely to have a post-partum relapse (odds ratio (OR) = 1.83, p = 0.02), independently of the use of neuraxial analgesia. There was no association between neuraxial analgesia and post-partum relapse (OR = 1.08, p = 0.78). Conclusion: Neuraxial analgesia was not associated with an increased risk of post-partum relapses, whatever multiple sclerosis (MS) activity during pregnancy.
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Affiliation(s)
- Caroline Lavie
- Service de Neurologie A, Hôpital Pierre Wertheimer,
Hospices Civils de Lyon, Lyon, France
| | - Fabien Rollot
- Observatoire Français de la Sclérose en Plaques (OFSEP),
Lyon, France
| | | | - Romain Marignier
- Service de Neurologie A, Hôpital Pierre Wertheimer,
Hospices Civils de Lyon, Lyon, France/Centre de Recherche en Neurosciences de Lyon,
INSERM U1028, CNRS UMR5292, Equipe Neuro-Oncologie et Neuro-Inflammation, Lyon, France;
Université de Lyon 1, Lyon, France
| | - Iuliana Ionescu
- Service de Neurologie A, Hôpital Pierre Wertheimer,
Hospices Civils de Lyon, Lyon, France
| | - Romain Casey
- Observatoire Français de la Sclérose en Plaques (OFSEP),
Lyon, France
| | - Thibault Moreau
- Department of Neurology, EA4184, University Hospital of
Dijon, Dijon, France
| | | | - Michael Hutchinson
- School of Medicine and Medical Science, University College
Dublin, Dublin, Ireland/Department of Neurology, St Vincent’s University Hospital,
Dublin, Ireland
| | - Marie Béatrice D’Hooghe
- National MS Center Melsbroek, Melsbroek, Belgium; Center
for Neurosciences, Vrije Universiteit Brussel (VUB), Brussel, Belgium
| | - David-Axel Laplaud
- Service de Neurologie, CHU de Nantes, CIC015 INSERM,
Nantes, France/INSERM UMR1064, Nantes, France
| | - Pierre Clavelou
- Service de Neurologie, CHU de Clermont-Ferrand,
Clermont-Ferrand, France/INSERM UMR1107, Clermont Université, Université d’Auvergne,
Neuro-Dol, Clermont-Ferrand, France
| | - Jérôme De Sèze
- Department of Neurology, Clinical Investigation Center
INSERM 1434, Hôpitaux Universitaires de Strasbourg, FMTS INSERM 1119, Strasbourg,
France
| | - Marc Debouverie
- EA 4360 APEMAC, University of Lorraine, Nancy,
France/Department of Neurology, Nancy University Hospital, Nancy, France
| | - David Brassat
- Pôle Neurosciences, CHU Toulouse Purpan, Toulouse,
France/INSERM U1043, CNRS UMR 5282, Université Toulouse III, Toulouse, France
| | - Jean Pelletier
- Service de Neurologie, Hôpital de la Timone, Pôle de
Neurosciences Cliniques, AP-HM, Aix-Marseille Université, Marseille, France/CNRS,
Aix-Marseille Université, CRMBM UMR7339, Marseille, France
| | | | - Emmanuelle Le Page
- Clinical Neuroscience Centre, CIC-P 1414 INSERM, Rennes
University Hospital, Rennes, France
| | | | - Eric Berger
- Department of Neurology, CHU Besançon, Besançon,
France
| | - Patrick Hautecoeur
- Service de Neurologie, Groupement des Hôpitaux de
l’Institut Catholique de Lille, Lille, France
| | - Olivier Heinzlef
- Department of Neurology, Hôpital CHI de
Poissy/Saint-Germain-en-Laye, Paris, France
| | - Luca Durelli
- Division of Neurology, Department of Clinical and
Biological Sciences, University of Torino, San Luigi Gonzaga University Hospital,
Orbassano, Italy
| | - Marinella Clerico
- Division of Neurology, Department of Clinical and
Biological Sciences, University of Torino, San Luigi Gonzaga University Hospital,
Orbassano, Italy
| | - Maria Trojano
- Department of Basic Medical Sciences, Neuroscience and
Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Patti
- Department of Medical and Surgical Sciences, and Advanced
Technologies, G.F. Ingrassia, Multiple Sclerosis Center, University of Catania, Catania,
Italy
| | - Sandra Vukusic
- Service de Neurologie A, Hôpital Pierre Wertheimer,
Hospices Civils de Lyon, Lyon, France/Observatoire Français de la Sclérose en Plaques
(OFSEP), Lyon, France/Centre de Recherche en Neurosciences de Lyon, INSERM U1028, CNRS
UMR5292, Equipe Neuro-Oncologie et Neuro-Inflammation, Lyon, France/Université de Lyon
1, Lyon, France
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Pélissier C, Fort E, Fontana L, Charbotel B, Hours M. Factors associated with non-return to work in the severely injured victims 3 years after a road accident: A prospective study. Accid Anal Prev 2017; 106:411-419. [PMID: 28728063 DOI: 10.1016/j.aap.2017.06.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 06/07/2017] [Accepted: 06/29/2017] [Indexed: 06/07/2023]
Abstract
Road accidents may impact victims' physical and/or mental health and socio-occupational life, particularly the capacity to return to work. The purpose of our study is to assess modifiable medical and socio-occupational factors of non-return to work in the severely injured 3 years after a road accident. Among1,168 road accidents casualties in the Rhône administrative Département of France followed for five years, 141 of the 222 severely injured (Maximal Abbreviated Injury Scale ≥ 3) aged more than 16 years who were in work at the time of the accident, reported whether they had returned to work in the 3 years following the accident. The subgroups of those who had (n=113) and had not returned to work (n=28) were compared for socio-occupational (gender, age, educational level, marital status, socio-occupational group) accident-related medical factors (type of road user, type of journey, responsibility in the accident, initial care) and post-accident medical factors (pain intensity, post-traumatic stress disorder, physical sequelae, quality of life) by using standardized tools. Severity of initial head, face and lower-limb injury, intense persistent pain, post-traumatic stress disorder, poor self-assessed quality of life and health status at 3 years were associated with non-return to work on univariate analysis. On multivariate analysis, severity of initial head and lower-limb injury, intense persistent pain at 3 years and post-traumatic stress disorder were significantly associated with non-return to work 3 years following severe road-accident injury. Post-traumatic stress disorder and chronic pain were essential modifiable medical determinants of non-return to work in the severely injured after a road accident: early adapted management could promote return to work in the severely injured. Improve early adapted treatment of pain and PTSD in the rehabilitation team should help the severely injured return to work following a road accident.
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Affiliation(s)
- C Pélissier
- Université de Lyon, Université Lyon 1, Université de St Etienne, IFSTTAR, UMRESTTE, UMR_T9405, 42005 Saint Etienne, France; Service de Santé au Travail, CHU de Saint-Etienne, France.
| | - E Fort
- Université de Lyon, Université Lyon 1, IFSTTAR, UMRESTTE, UMR_T9405, F-69373 Lyon, France
| | - L Fontana
- Université de Lyon, Université Lyon 1, Université de St Etienne, IFSTTAR, UMRESTTE, UMR_T9405, 42005 Saint Etienne, France; Service de Santé au Travail, CHU de Saint-Etienne, France
| | - B Charbotel
- Université de Lyon, Université Lyon 1, IFSTTAR, UMRESTTE, UMR_T9405, F-69373 Lyon, France; Hospices Civils de Lyon, Service de Santé au Travail, France
| | - M Hours
- Univ Lyon, IFSTTAR, Univ Lyon 1, UMRESTTE, UMR_T9405, F-69675 Bron, France
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Tournier C, Charnay P, Luauté J, Hours M. Cohorte ESPARR : facteurs associés à l’état de santé des victimes trois ans après l’accident de la route. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2014.06.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Koura KG, Charnay P, Tournier C, Javouhey E, Luauté J, Hours M. Évolution de la qualité de vie après un traumatisme crânien par accident de la route : un suivi à cinq ans de la cohorte ESPARR, Lyon, France. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2014.06.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Billot-Grasset A, Viallon V, Amoros E, Hours M. Accidents cyclistes : apports des données médicales, construction et exploitation d’une typologie. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2014.06.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Fanjas A, Fort E, Pélissier C, Charnay P, Fontana L, Charbotel B, Bergeret A, Hours M. Accidents de la route dans le cadre du travail et conséquences sur le travail. Résultats de la cohorte ESPARR. ARCH MAL PROF ENVIRO 2014. [DOI: 10.1016/j.admp.2014.03.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tournier C, Charnay P, Hours M. The ESPARR cohort: The future of serious injured aged 16years and over (M.AIS3+) with a traumatic brain injury (TBI) 3years after the crash. Ann Phys Rehabil Med 2014. [DOI: 10.1016/j.rehab.2014.03.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tournier C, Charnay P, Hours M. Cohorte ESPARR : devenir des blessés graves âgés de 16ans et plus (M.AIS3+) atteints d’un traumatisme crânien (TC) trois ans après l’accident. Ann Phys Rehabil Med 2014. [DOI: 10.1016/j.rehab.2014.03.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Koura K, Charnay P, Tournier C, Javouhey E, Luaute J, Hours M. Impact of traumatic brain injury on the evolution of quality of life during the five years following a road accident. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hoangthynhac V, Hours M, Charnay P, Chossegros L, Tardy H, Laumon B. Facteurs pronostiques du devenir à un an des victimes d’accidents de la route (cohorte ESPARR). Rev Epidemiol Sante Publique 2013. [DOI: 10.1016/j.respe.2013.07.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Koura K, Charnay P, Tournier C, Javouhey E, Luaute J, Hours M. Évolution de la qualité de vie après un traumatisme crânien par accident de la route : un suivi à cinq ans de la cohorte ESPARR. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Massardier-pilonchéry A, Hours M, Gillet M, Dousson C, Lafon G, Trescol E, Bergeret A. Évaluation de l’exposition aux radiofréquences des techniciens de maintenance de téléphonie mobile. ARCH MAL PROF ENVIRO 2012. [DOI: 10.1016/j.admp.2012.03.659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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McLean D, van Tongeren M, Richardson L, Schlehofer B, Villegas R, Benke G, Jarus-Hakak A, Hours M, Nadon L, Samkange-Zeeb F, Sleeuwenhoek A, Cardis E. Evaluation of the quality and comparability of job coding across seven countries in the INTEROCC study. Occup Environ Med 2011. [DOI: 10.1136/oemed-2011-100382.196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Cardis E, Armstrong BK, Bowman JD, Giles GG, Hours M, Krewski D, McBride M, Parent ME, Sadetzki S, Woodward A, Brown J, Chetrit A, Figuerola J, Hoffmann C, Jarus-Hakak A, Montestruq L, Nadon L, Richardson L, Villegas R, Vrijheid M. Risk of brain tumours in relation to estimated RF dose from mobile phones: results from five Interphone countries. Occup Environ Med 2011; 68:631-40. [PMID: 21659469 PMCID: PMC3158328 DOI: 10.1136/oemed-2011-100155] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objectives The objective of this study was to examine the associations of brain tumours with radio frequency (RF) fields from mobile phones. Methods Patients with brain tumour from the Australian, Canadian, French, Israeli and New Zealand components of the Interphone Study, whose tumours were localised by neuroradiologists, were analysed. Controls were matched on age, sex and region and allocated the ‘tumour location’ of their matched case. Analyses included 553 glioma and 676 meningioma cases and 1762 and 1911 controls, respectively. RF dose was estimated as total cumulative specific energy (TCSE; J/kg) absorbed at the tumour's estimated centre taking into account multiple RF exposure determinants. Results ORs with ever having been a regular mobile phone user were 0.93 (95% CI 0.73 to 1.18) for glioma and 0.80 (95% CI 0.66 to 0.96) for meningioma. ORs for glioma were below 1 in the first four quintiles of TCSE but above 1 in the highest quintile, 1.35 (95% CI 0.96 to 1.90). The OR increased with increasing TCSE 7+ years before diagnosis (p-trend 0.01; OR 1.91, 95% CI 1.05 to 3.47 in the highest quintile). A complementary analysis in which 44 glioma and 135 meningioma cases in the most exposed area of the brain were compared with gliomas and meningiomas located elsewhere in the brain showed increased ORs for tumours in the most exposed part of the brain in those with 10+ years of mobile phone use (OR 2.80, 95% CI 1.13 to 6.94 for glioma). Patterns for meningioma were similar, but ORs were lower, many below 1.0. Conclusions There were suggestions of an increased risk of glioma in long-term mobile phone users with high RF exposure and of similar, but apparently much smaller, increases in meningioma risk. The uncertainty of these results requires that they be replicated before a causal interpretation can be made.
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Affiliation(s)
- E Cardis
- Centre for Research in Environmental Epidemiology (CREAL), Hospital del Mar Research Institute (IMIM), CIBER Epidemiologia y Salud Pública (CIBERESP), Doctor Aiguader 88, 08003 Barcelona, Spain.
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Viel JF, Tiv M, Moissonnier M, Cardis E, Hours M. Variability of radiofrequency exposure across days of the week: a population-based study. Environ Res 2011; 111:510-513. [PMID: 21411077 DOI: 10.1016/j.envres.2011.02.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 12/22/2010] [Accepted: 02/22/2011] [Indexed: 05/30/2023]
Abstract
Although measurement of the radiofrequency (RF) exposure can today be performed with personal exposure meters, this approach would be very expensive and time-consuming for large studies, and long term measurements would require considerable commitment of the study participants. Thus, there is a need for validated exposure assessment methods that do not require individual measurements for each study participant. Among the potential predictors, one of the most amenable to being recorded adequately is the day of the week. Drawing upon an existing population-based study, our goal was therefore to assess variability of individual RF exposure across days of the week. The random sample consisted of 34 people who were supplied with a personal exposure meter for seven consecutive days, and kept a time-location-activity diary. A total of 225,414 electric field strength measurements were recorded in 12 different RF bands. Summary statistics were calculated with the robust regression on order statistics method. We found evidence for statistically significant variability of individual RF exposure across days of the week, though the relative magnitude of the differences observed was small. Larger studies are needed to validate these results and determine whether day of the week is an important determinant for inclusion in individual RF exposure prediction models that remain urgently needed to conduct epidemiological studies on potential health effects.
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Affiliation(s)
- J-F Viel
- CNRS no. 6249 Chrono-Environment, Faculty of Medicine, 2 place Saint Jacques, 25030 Besancon, France.
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Hours M, Fort E, Bouffard E, Charnay P, Bernard M, Boisson D, Laumon B. Return to work following road accidents: Factors associated with late work resumption. J Rehabil Med 2011; 43:283-91. [DOI: 10.2340/16501977-0670] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Charnay P, Hours M, Sancho PO, Luauté J, Laumon B, Boisson D. La satisfaction des patients de la cohorte Esparr comme critère d’évaluation de la qualité des soins. Rev Epidemiol Sante Publique 2010. [DOI: 10.1016/j.respe.2010.02.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Vrijheid M, Mann S, Vecchia P, Wiart J, Taki M, Ardoino L, Armstrong BK, Auvinen A, Bédard D, Berg-Beckhoff G, Brown J, Chetrit A, Collatz-Christensen H, Combalot E, Cook A, Deltour I, Feychting M, Giles GG, Hepworth SJ, Hours M, Iavarone I, Johansen C, Krewski D, Kurttio P, Lagorio S, Lönn S, McBride M, Montestrucq L, Parslow RC, Sadetzki S, Schüz J, Tynes T, Woodward A, Cardis E. Determinants of mobile phone output power in a multinational study: implications for exposure assessment. Occup Environ Med 2009; 66:664-71. [PMID: 19465409 DOI: 10.1136/oem.2008.043380] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES The output power of a mobile phone is directly related to its radiofrequency (RF) electromagnetic field strength, and may theoretically vary substantially in different networks and phone use circumstances due to power control technologies. To improve indices of RF exposure for epidemiological studies, we assessed determinants of mobile phone output power in a multinational study. METHODS More than 500 volunteers in 12 countries used Global System for Mobile communications software-modified phones (GSM SMPs) for approximately 1 month each. The SMPs recorded date, time, and duration of each call, and the frequency band and output power at fixed sampling intervals throughout each call. Questionnaires provided information on the typical circumstances of an individual's phone use. Linear regression models were used to analyse the influence of possible explanatory variables on the average output power and the percentage call time at maximum power for each call. RESULTS Measurements of over 60,000 phone calls showed that the average output power was approximately 50% of the maximum, and that output power varied by a factor of up to 2 to 3 between study centres and network operators. Maximum power was used during a considerable proportion of call time (39% on average). Output power decreased with increasing call duration, but showed little variation in relation to reported frequency of use while in a moving vehicle or inside buildings. Higher output powers for rural compared with urban use of the SMP were observed principally in Sweden where the study covered very sparsely populated areas. CONCLUSIONS Average power levels are substantially higher than the minimum levels theoretically achievable in GSM networks. Exposure indices could be improved by accounting for average power levels of different telecommunications systems. There appears to be little value in gathering information on circumstances of phone use other than use in very sparsely populated regions.
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Affiliation(s)
- M Vrijheid
- International Agency for Research on Cancer (IARC), Lyon, France.
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Hours M, Bernard M, Arslan M, Montestrucq L, Richardson L, Deltour I, Cardis E. Can loud noise cause acoustic neuroma? Analysis of the INTERPHONE study in France. Occup Environ Med 2009; 66:480-6. [PMID: 19289391 DOI: 10.1136/oem.2008.042101] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To investigate possible associations between risk of acoustic neuroma and exposure to loud noise in leisure and occupational settings. METHODS A case-control study was conducted in France within the international INTERPHONE study. The cases were the 108 subjects diagnosed with acoustic neuroma between 1 June 2000 and 31 August 2003. Two controls per case were selected from the electoral rolls and individually matched for gender, age (5 years) and area (local authority district) of residence at the time of the case diagnosis. Multivariate analyses were conducted using conditional logistic regression. Adjustment was made for socioeconomic status. RESULTS Acoustic neuroma was found to be associated with loud noise exposure (odds ratio (OR) = 2.55; 95% CI 1.35 to 4.82), both in leisure settings, particularly when listening to loud music (OR = 3.88; 95% CI 1.48 to 10.17) and at work (OR = 2.26; 95% CI 1.08 to 4.72). This risk increased with exposure duration (>6 years' leisure exposure: OR = 3.15; 95% CI 1.07 to 9.24). Risk varied according to the type of noise (continuous or explosive vs intermittent). CONCLUSION The present results agree with other recent reports implicating loud noise in the risk of acoustic neuroma.
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Affiliation(s)
- M Hours
- Institut National de Recherche sur les Transports et leur Sécurité, Université de Lyon, Lyon, France.
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Viel JF, Clerc S, Barrera C, Rymzhanova R, Moissonnier M, Hours M, Cardis E. Residential exposure to radiofrequency fields from mobile phone base stations, and broadcast transmitters: a population-based survey with personal meter. Occup Environ Med 2009; 66:550-6. [DOI: 10.1136/oem.2008.044180] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hours M, Bernard M, Montestrucq L, Arslan M, Bergeret A, Deltour I, Cardis E. Téléphone mobile, risque de tumeurs cérébrales et du nerf vestibuloacoustique: l'étude cas-témoins INTERPHONE en France. Rev Epidemiol Sante Publique 2007; 55:321-32. [PMID: 17851009 DOI: 10.1016/j.respe.2007.06.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2006] [Accepted: 06/12/2007] [Indexed: 10/14/2022] Open
Abstract
BACKGROUND Use of cell phones has increased dramatically since 1992 when they were first introduced in France. Certain electromagnetic fields (at extremely low frequency) have been recognized as possibly carcinogenic by the International Agency for Research on Cancer. Given the use of radiofrequency technology in cell phones, the rapid increase in the number of cell phones has generated concerns about the existence of a potential health hazard. To evaluate the relationship between the use of cell phones and the development of tumors of the head, a multicentric international study (INTERPHONE), coordinated by the International Agency for Research on Cancer, was carried out in 13 countries. This publication reports the results of the French part of the INTERPHONE study. METHODS INTERPHONE is a case-control study focused on tumors of the brain and central nervous system: gliomas, meningiomas and neuromas of cranial nerves. Eligible cases were men and women, residents of Paris or Lyon, aged 30-59, newly diagnosed with a first primary tumor between February 2001 and August 2003. The diagnoses were all either histologically confirmed or based upon unequivocal radiological images. Controls were matched for gender, age (+/-5 years) and place of residence. They were randomly drawn from electoral rolls. Detailed information was collected for all subjects during a computer-assisted face-to-face interview. Conditional logistic regression was used to estimate the odds ratio (OR) for an association between the use of cell phones and risk of each type of cancer. RESULTS Regular cell phone use was not associated with an increased risk of neuroma (OR=0,92; 95% confidence interval=[0.53-1.59]), meningioma (OR=0,74; 95% confidence interval=[0.43-1.28]) or glioma (OR=1.15; 95% confidence interval=[0.65-2.05]). Although these results are not statistically significant, a general tendency was observed for an increased risk of glioma among the heaviest users: long-term users, heavy users, users with the largest numbers of telephones. CONCLUSION No significant increased risk for glioma, meningioma or neuroma was observed among cell phone users participating in Interphone. The statistical power of the study is limited, however. Our results, suggesting the possibility of an increased risk among the heaviest users, therefore need to be verified in the international INTERPHONE analyses.
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Affiliation(s)
- M Hours
- Unité mixte de recherche épidémiologique et de surveillance transport travail environnement (INRETS/UCBL/InVS), faculté de médecine, domaine Rockefeller, 8, avenue Rockefeller, 69373 Lyon cedex 08, France.
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Abstract
OBJECTIVES To assess the mortality of a cohort of workers in a synthetic textile spinning plant and to evaluate the relationship between mortality from lung, liver and bladder cancer and the processes or the products used. METHODS The study population consisted of male workers present for at least 6 months in the plant from 1968 to 1984. The cohort was followed until 1999. Vital status and the causes of death were determined by consulting national registries. The population of the Franche-Comté region was used for comparison. In total, 17 groups of exposure were assessed by the industrial hygienist, based on the consensus of an expert group that determined the exposure levels of each job to selected occupational hazards. Each worker was assigned to one or several groups, according to his occupational history. Confounding factors could not be assessed. Standardised mortality ratios (SMR) and 95% bilateral confidence intervals were calculated based on an assumed Poisson distribution of the number of cases to compare the plant mortality and the population mortality. Internal analyses were performed with Cox models in order to assess the risks of death related to the various exposures. RESULTS In the whole cohort, mortality from all malignant neoplasms was lower than expected, but this was not significant. All the estimated SMRs were lower than or close to 1. The "hot -line fitters" (RR = 2.13; n = 9; 1.06 to 4.29) and the "fibre-drawing workers" (RR = 1.83; n = 20;1.09 to 3.07) experienced a statistically significant excess in mortality from lung cancer. A slightly elevated but not significant risk of death related to lung cancer (RR = 1.5; n = 41; 0.8 to 2.7) was observed in the groups with the highest exposure to mineral fibres. A statistically significant increase in cancer deaths was observed for workers with high exposure to dust (higher intensity: RR = 1.42; n = 79; 1.06 to 1.89). CONCLUSION Some findings, mainly of lung cancer, justify further exploration in other plants in this industry.
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Affiliation(s)
- M Hours
- Epidemiological Research and Surveillance Unit in Transport Occupation and Environment, INRETS, UMR T9002, Bron, F-69500, France.
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Vrijheid M, Cardis E, Armstrong BK, Auvinen A, Berg G, Blaasaas KG, Brown J, Carroll M, Chetrit A, Christensen HC, Deltour I, Feychting M, Giles GG, Hepworth SJ, Hours M, Iavarone I, Johansen C, Klaeboe L, Kurttio P, Lagorio S, Lönn S, McKinney PA, Montestrucq L, Parslow RC, Richardson L, Sadetzki S, Salminen T, Schüz J, Tynes T, Woodward A. Validation of short term recall of mobile phone use for the Interphone study. Occup Environ Med 2006; 63:237-43. [PMID: 16556742 PMCID: PMC2078087 DOI: 10.1136/oem.2004.019281] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIM To validate short term recall of mobile phone use within Interphone, an international collaborative case control study of tumours of the brain, acoustic nerve, and salivary glands related to mobile telephone use. METHODS Mobile phone use of 672 volunteers in 11 countries was recorded by operators or through the use of software modified phones, and compared to use recalled six months later using the Interphone study questionnaire. Agreement between recalled and actual phone use was analysed using both categorical and continuous measures of number and duration of phone calls. RESULTS Correlations between recalled and actual phone use were moderate to high (ranging from 0.5 to 0.8 across countries) and of the same order for number and duration of calls. The kappa statistic demonstrated fair to moderate agreement for both number and duration of calls (weighted kappa ranging from 0.20 to 0.60 across countries). On average, subjects underestimated the number of calls per month (geometric mean ratio of recalled to actual = 0.92, 95% CI 0.85 to 0.99), whereas duration of calls was overestimated (geometric mean ratio = 1.42, 95% CI 1.29 to 1.56). The ratio of recalled to actual use increased with level of use, showing underestimation in light users and overestimation in heavy users. There was substantial heterogeneity in this ratio between countries. Inter-individual variation was also large, and increased with level of use. CONCLUSIONS Volunteer subjects recalled their recent phone use with moderate systematic error and substantial random error. This large random error can be expected to reduce the power of the Interphone study to detect an increase in risk of brain, acoustic nerve, and parotid gland tumours with increasing mobile phone use, if one exists.
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Affiliation(s)
- M Vrijheid
- International Agency for Research on Cancer, Lyon, France.
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Charbotel B, Févotte J, Hours M, Martin J, Bergeret A. Exposition au trichloroéthylène et cancer du rein, étude cas-témoins. ARCH MAL PROF ENVIRO 2006. [DOI: 10.1016/s1775-8785(06)78162-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hours M. Connaissances actuelles sur les relations entre le téléphone mobile et la santé. ARCH MAL PROF ENVIRO 2006. [DOI: 10.1016/s1775-8785(06)78278-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hours M, Henrotin J, Fort E. Caractéristiques des accidents de la circulation en lien avec le travail : une analyse à partir des données 2001 du Registre des victimes d’accidents de la circulation du Rhône. ARCH MAL PROF ENVIRO 2006. [DOI: 10.1016/s1775-8785(06)78114-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hours M, Fevotte J, Lafont S, Siruguet O, Deschaseaux E, Jacquot R, Leplay A, Pilorget C, Bergeret A. Analyse des causes de mortalité des anciens salariés de l’usine Rhodiacéta de Besançon : une étude de cohorte 1968-1999. ARCH MAL PROF ENVIRO 2005. [DOI: 10.1016/s1775-8785(05)82241-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Arslan M, Hours M, Thévenin I, Paris A, Lepicard I, Bergeret A. Étude de l’état de santé des portiqueurs des ports du Havre et de Marseille. ARCH MAL PROF ENVIRO 2005. [DOI: 10.1016/s1775-8785(05)79076-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hours M, Fevotte J, Lafont S, Siruguet O, Deschaseaux E, Jacquot R, Leplay A, Pilorget C, Bergeret A. B1-1 Analyse des causes de mortalité des anciens salariés de l’usine Rhodiacéta de Besançon : une étude de cohorte 1968-1999. Rev Epidemiol Sante Publique 2004. [DOI: 10.1016/s0398-7620(04)99126-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Cordier S, Chevrier C, Robert-Gnansia E, Lorente C, Brula P, Hours M. Risk of congenital anomalies in the vicinity of municipal solid waste incinerators. Occup Environ Med 2004; 61:8-15. [PMID: 14691267 PMCID: PMC1757799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
BACKGROUND Although municipal solid waste incineration (MSWI) has contributed to increase the overall environmental load of particulate matter containing dioxins and metals, evidence of health consequences to populations is sparse. AIMS To assess at a regional level (in southeast France) the impact of these emissions on birth defect rates. METHODS Communities with fewer than 50 000 inhabitants surrounding the 70 incinerators that operated at least one year from 1988 to 1997 were studied. Each exposed community (n = 194) was assigned an exposure index estimated from a Gaussian plume model. Poisson models and a reference population of the 2678 unexposed communities in the region were used to calculate relative risks for congenital malformations, adjusted for year of birth, maternal age, department of birth, population density, average family income, and when available, local road traffic. RESULTS The rate of congenital anomalies was not significantly higher in exposed compared with unexposed communities. Some subgroups of major anomalies, specifically facial clefts and renal dysplasia, were more frequent in the exposed communities. Among exposed communities, a dose-response trend of risk with increasing exposure was observed for obstructive uropathies. Risks of cardiac anomalies, obstructive uropathies, and skin anomalies increased linearly with road traffic density. CONCLUSIONS Although both incinerator emissions and road traffic may plausibly explain some of the excess risks observed, several alternative explanations, including exposure misclassification, ascertainment bias, and residual confounding cannot be excluded. Some of the effects observed, if real, might be attributable to old-technology MSWIs and the persistent pollution they have generated.
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Affiliation(s)
- S Cordier
- INSERM U435, Université Rennes I, Rennes, France.
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Maître A, Collot-Fertey D, Anzivino L, Marques M, Hours M, Stoklov M. Municipal waste incinerators: air and biological monitoring of workers for exposure to particles, metals, and organic compounds. Occup Environ Med 2003; 60:563-9. [PMID: 12883016 PMCID: PMC1740590 DOI: 10.1136/oem.60.8.563] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIMS To evaluate occupational exposure to toxic pollutants at municipal waste incinerators (MWIs). METHODS Twenty nine male subjects working near the furnaces in two MWIs, and 17 subjects not occupationally exposed to combustion generated pollutants were studied. Individual air samples were taken throughout the shift; urine samples were collected before and after. Stationary air samples were taken near potential sources of emission. RESULTS Occupational exposure did not result in the infringement of any occupational threshold limit value. Atmospheric exposure levels to particles and metals were 10-100 times higher in MWIs than at the control site. The main sources were cleaning operations for particles, and residue transfer and disposal operations for metals. MWI workers were not exposed to higher levels of polycyclic aromatic hydrocarbons than workers who are routinely in contact with vehicle exhaust. The air concentrations of volatile organic compounds and aldehydes were low and did not appear to pose any significant threat to human health. Only the measurement of chlorinated hydrocarbon levels would seem to be a reliable marker for the combustion of plastics. Urine metal levels were significantly higher at plant 1 than at plant 2 because of high levels of pollutants emanating from one old furnace. CONCLUSION While biological monitoring is an easy way of acquiring data on long term personal exposure, air monitoring remains the only method that makes it possible to identify the primary sources of pollutant emission which need to be controlled if occupational exposure and environmental pollution are to be reduced.
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Affiliation(s)
- A Maître
- Department of Occupational Medicine, EPSP-TIMC (Environnement et Prédiction de la Santé des Populations) Laboratory, Grenoble Faculty of Medicine, Joseph Fourier University, Domaine de la Merci, 38 700 La Tronche, France.
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Brennan P, Bogillot O, Greiser E, Chang-Claude J, Wahrendorf J, Cordier S, Jöckel KH, Lopez-Abente G, Tzonou A, Vineis P, Donato F, Hours M, Serra C, Bolm-Audorff U, Schill W, Kogevinas M, Boffetta P. The contribution of cigarette smoking to bladder cancer in women (pooled European data). Cancer Causes Control 2001; 12:411-7. [PMID: 11545456 DOI: 10.1023/a:1011214222810] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Using a combined analysis of 11 case-control studies from Europe, we have investigated the relationship between cigarette smoking and bladder cancer in women. METHODS Available smoking information on 685 female bladder cancer cases and 2416 female controls included duration of smoking habit, number of cigarettes smoked per day, and time since cessation of smoking habit for ex-smokers. RESULTS There was an increasing risk of bladder cancer with increasing duration of smoking, ranging from approximately a two-fold increased risk for a duration of less than 10 years (odds ratio (OR) = 1.9, 95% confidence interval (CI) 1.1-3.1) to over a four-fold increased risk for a duration of greater than 40 years (OR = 4.1, 95% CI 3.0-5.5). A dose-response relationship was observed between number of cigarettes smoked per day and bladder cancer up to a threshold limit of 15-20 cigarettes per day, OR = 3.8 (95% CI 2.7-5.4), after which no increased risk was observed. An immediate decrease in risk of bladder cancer was observed for those who gave up smoking. This decrease was over 30% in the immediate 1-4 years after cessation, OR = 0.68 (95% CI 0.38-1.2). However, even after 25 years the decrease in risk did not reach the level of the never-smokers, OR = 0.27 (95% CI 0.21-0.35). CONCLUSION The proportion of bladder cancer cases among women attributable to ever smoking was 0.30, (0.25-0.35) and to current smoking was 0.18 (0.14-0.22). These attributable proportions are less than those observed among men, although they are likely to increase in the future as the smoking-related disease epidemic among women matures.
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Affiliation(s)
- P Brennan
- Unit of Environmental Cancer Epidemiology, International Agency for Research on Cancer, Lyon, France.
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Brennan P, Bogillot O, Cordier S, Greiser E, Schill W, Vineis P, Lopez-Abente G, Tzonou A, Chang-Claude J, Bolm-Audorff U, Jöckel KH, Donato F, Serra C, Wahrendorf J, Hours M, T'Mannetje A, Kogevinas M, Boffetta P. Cigarette smoking and bladder cancer in men: a pooled analysis of 11 case-control studies. Int J Cancer 2000; 86:289-94. [PMID: 10738259 DOI: 10.1002/(sici)1097-0215(20000415)86:2<289::aid-ijc21>3.0.co;2-m] [Citation(s) in RCA: 270] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The primary risk factor for bladder cancer is cigarette smoking. Using a combined analysis of 11 case-control studies, we have accurately measured the relationship between cigarette smoking and bladder cancer in men. Available smoking information on 2,600 male bladder cancer cases and 5,524 male controls included duration of smoking habit, number of cigarettes smoked per day and time since cessation of smoking habit for ex-smokers. There was a linear increasing risk of bladder cancer with increasing duration of smoking, ranging from an odds ratio (OR) of 1.96 after 20 years of smoking (95% confidence interval [CI] 1.48-2.61) to 5.57 after 60 years (CI 4.18-7.44). A dose relationship was observed between number of cigarettes smoked per day and bladder cancer up to a threshold limit of 15-20 cigarettes per day, OR = 4.50 (CI 3.81-5. 33), after which no increased risk was observed. An immediate decrease in risk of bladder cancer was observed for those who gave up smoking. This decrease was over 30% after 1-4 years, OR = 0.65 (0. 53-0.79), and was over 60% after 25 years of cessation, OR = 0.37 (0. 30-0.45). However, even after 25 years, the decrease in risk did not reach the level of the never-smokers, OR = 0.20. (0.17-0.24). The proportion of bladder cancer cases attributable to ever-smoking was 0.66 (0.61-0.70) for all men and 0.73 (0.66-0.79) for men younger than 60. These estimates are higher than previously calculated.
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Affiliation(s)
- P Brennan
- International Agency for Research on Cancer, Lyon, France.
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't Mannetje A, Kogevinas M, Chang-Claude J, Cordier S, González CA, Hours M, Jöckel KH, Bolm-Audorff U, Lynge E, Porru S, Donato F, Ranft U, Serra C, Tzonou A, Vineis P, Wahrendorf J, Boffetta P. Smoking as a confounder in case-control studies of occupational bladder cancer in women. Am J Ind Med 1999; 36:75-82. [PMID: 10361590 DOI: 10.1002/(sici)1097-0274(199907)36:1<75::aid-ajim11>3.0.co;2-o] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND In studies in men, risk estimates on occupation and bladder cancer are distorted by about 10% when not adjusting for smoking. We examined the degree to which occupational risk estimates for bladder cancer in women are confounded by smoking, and the degree of residual confounding by inadequate control of this effect. METHODS Primary data of 11 case-control studies on occupation and bladder cancer from Denmark, France, Germany, Greece, Italy, and Spain were pooled. Information for smoking and lifetime occupational history for 700 female cases and 2,425 female controls ages 30-79 was abstracted and recoded. Logistic regression was used to calculate odds ratios (OR) by occupation, applying five models which differed in their degree of adjustment for smoking. RESULTS In major occupational groups, risk estimates were distorted by less than 10% when not adjusting for smoking. A statistically significant excess risk for bladder cancer was found in 13 specific occupations and industries. In most occupations, adjustment for smoking led the ORs towards the null value, but all statistically significant associations were maintained after adjustment. In three occupations (lathe operators, field crop workers, and wood manufacturers), a statistically significant excess risk was masked when not adjusting for smoking. In six occupations, estimates were distorted by more than 10% (-22% up to +40%). In occupations where smoking acted as a positive confounder, the proportion of confounding removed using a dichotomous smoking variable (ever/never) was around 60%. In one occupation (buyers), controlling for smoking status (ever, never) led to over-adjustment, because the percentage of smokers was high but the quantity smoked was low.
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Affiliation(s)
- A 't Mannetje
- Respiratory and Environmental Health Research Unit, IMIM, Barcelona, Spain
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38
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Mannetje A, Kogevinas M, Chang-Claude J, Cordier S, González CA, Hours M, Jöckel KH, Bolm-Audorff U, Lynge E, Porru S, Donato F, Ranft U, Serra C, Tzonou A, Vineis P, Wahrendorf J, Boffetta P. Occupation and bladder cancer in European women. Cancer Causes Control 1999; 10:209-17. [PMID: 10454066 DOI: 10.1023/a:1008852127139] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVES We examined the importance of occupational exposures for bladder cancer in women. METHODS We combined data from 11 case-control studies conducted between 1976 and 1996 in six European countries. The pooled data comprised 700 incident female cases and 2425 population or hospital controls, aged 30-79 years. Lifetime occupational and smoking history were examined using common coding. RESULTS Excess risks were found in only a few of the occupations previously identified at high risk for bladder cancer. Statistically significant excess risks were observed for metal workers, particularly blacksmiths, toolmakers and machine tool operators (OR: 2.0, 95% CI: 1.1-3.6), tobacco workers (OR: 3.1, 95% CI: 1.1-9.3), field crop and vegetable farm workers (OR: 1.8, 95% CI: 1.0-3.1), tailors and dress makers (OR: 1.4, 95% CI: 1.0-2.1), saleswomen (OR: 2.6, 95% CI: 1.0-6.9), and mail sorting clerks (OR: 4.4, 95% CI: 1.0-19.5). About 8% (95% CI: 3.1 19.9) of all bladder cancers in women could be attributed to occupation after adjusting for smoking. The attributable risk was higher in women aged less than 65 years (12%), compared to older women (4%). CONCLUSIONS The calculation of the attributable risk on the basis of results from this analysis may have caused some overestimation of the proportion of occupational bladder cancer in women. A significant proportion, however, of bladder cancer cases among European women less than 65 years is likely to be attributed to occupation. This link between bladder cancer in women and occupational factors has received little recognition, probably because studies addressing these issues have predominantly been done in men.
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Affiliation(s)
- A Mannetje
- Respiratory and Environmental Health Research Unit, Insitut Municipal d'Investigació Mèdica, Barcelona, Spain
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Confavreux C, Hutchinson M, Hours M, Cortinovis-Tourniaire P, Grimaud J, Moreau T. [Multiple sclerosis and pregnancy: clinical issues]. Rev Neurol (Paris) 1999; 155:186-91. [PMID: 10339787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Multiple sclerosis (MS) is the most common chronic disabling neurological disease affecting young women. Paradoxically, our knowledge of the relationship between pregnancy and MS is limited. However, several conclusions emerge from the literature: 1) The rate of relapse in MS decreases during pregnancy, and it rises significantly during the first three months post partum before coming back to its level prior to pregnancy. 2) Although pregnancy and delivery cause changes of the relapse rate, they have no influence on mid and long term residual disability. 3) Breast-feeding and epidural analgesia do not seem to have any deleterious effect on the disease. 4) Lastly, MS does not seem to influence pregnancy, delivery or the child's health. The studies available to date suffer from methodological limitations. They need to be confirmed by prospective studies. This is the purpose of the study entitled "Pregnancy in multiple sclerosis, PRIMS", which has been carried out since 1992 at the European level.
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Affiliation(s)
- C Confavreux
- EDMUS Coordinating Center et Service de Neurologie, Hôpital de l'Antiquaille, Lyon
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40
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Fortuny J, Kogevinas M, Chang-Claude J, González CA, Hours M, Jöckel KH, Bolm-Audorff U, Lynge E, 't Mannetje A, Porru S, Ranft U, Serra C, Tzonou A, Wahrendorf J, Boffetta P. Tobacco, occupation and non-transitional-cell carcinoma of the bladder: an international case-control study. Int J Cancer 1999; 80:44-6. [PMID: 9935228 DOI: 10.1002/(sici)1097-0215(19990105)80:1<44::aid-ijc9>3.0.co;2-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Transitional-cell carcinoma is the dominant histological type of malignant tumors of the urinary bladder. There is limited information on risk factors for non-transitional-cell carcinoma (NTCC) of the bladder. We used data from 9 case-control studies on bladder cancer from 6 European countries to examine the association between NTCC, tobacco smoking and occupation. Information on 146 cases diagnosed with NTCC were matched by age, gender and study center to 727 non-cancer population or hospital controls and also with 722 transitional-cell-bladder-cancer controls. Lifetime smoking and occupational history were evaluated. A statistically significant excess risk for NTCC was observed for current smoking [odds ratio (OR) = 3.61, 95% confidence interval (CI) 2.08-6.28]. The risk increased with higher tobacco consumption (OR for highest tertile of pack-years = 7.01, 95% CI 3.60-13.66). The risks were higher for squamous-cell carcinomas than for other types of NTCC. Among major occupational groups, a significant excess risk was seen for field-crop and vegetable-farm workers (OR = 2.06, 95% CI 1.03-4.10). These results indicate that NTCC of the bladder is associated with smoking and specific occupations. The risk pattern seems to differ, in part, from that observed for transitional-cell carcinoma of the bladder.
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Affiliation(s)
- J Fortuny
- Respiratory and Environmental Health Research Unit, IMIM, Barcelona, Spain
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41
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Wild P, Bergeret A, Moulin JJ, Lahmar A, Hours M. [Mortality in the French paper and pulp industry]. Rev Epidemiol Sante Publique 1998; 46:85-92. [PMID: 9592850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The objective was to describe a possible cancer mortality risk in relation with the occupational exposure within an International study co-ordinated by the International Agency for Research on Cancer. METHODS An epidemiological cohort study was set up to assess the mortality in four French pulp and paper companies. The four cohorts were followed up from January 1st 1968 to December 31st 1992. The causes of death were ascertained by matching with the national file of causes of death. RESULTS The full cohort consisted in 5,529 men and 876 women. The total numbers of subjects deceased between 1968 and 1992 were respectively 708 and 34. Causes of death could be traced for 98%. The observed mortality was significantly lower than the expected for all causes of deaths (SMR = 0.86) as well for all deaths by cancer (SMR = 0.87). The analysis by departments showed an excess mortality by cancer of the pancreas in the wood preparation department (SMR = 3.14) as well as in the paper production department (SMR = 2.04). CONCLUSIONS In absence of any prior hypothesis, it is difficult to assign an occupational origin to these observed excesses. The future results of the international study will enable us to interpret these results more precisely.
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Affiliation(s)
- P Wild
- Institut National de Recherche et de Sécurité, Service épidémiologie, Vandoeuvre
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42
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Partanen TJ, Boffetta P, Heikkilä PR, Frentzel-Beyme RR, Heederik D, Hours M, Järvholm BG, Kauppinen TP, Kromhout H, Langård S. Cancer risk for European asphalt workers. Scand J Work Environ Health 1995; 21:252-8. [PMID: 8552998 DOI: 10.5271/sjweh.34] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVES The feasibility of a European epidemiologic study of cancer risk among asphalt workers was examined in Western Europe. The study was motivated by occupational and public health concern about possible health risk from exposure to bitumen fumes. METHODS Information on the accessibility and quality of epidemiologic resources, retrospective worker records, mortality and cancer incidence records, and exposures was requested from research institutes and road paving and asphalt mixing companies in 15 European countries. RESULTS Research institutes and asphalt companies in 12 countries responded. It was found that at least 44 companies in seven countries can be included in a retrospective mortality study of a minimum of 32,000 employees with 356,000 person-years (over 100 lung cancers). Coal tar will be an important confounder for these data. The power of a cohort study of workers who have never worked with tar-containing materials remains insufficient. Even in an ambispective study extending to the year 2005, the expected lung cancer deaths in a tar-free cohort would be only four. CONCLUSIONS The results suggest that a case-referent study of lung cancer, nested in an international cohort of asphalt workers, represents the design of choice, conditionally on the possibility of assessing relevant individual life-time exposures. A cross-sectional determination of relevant biomarkers of exposure such as adducts in lymphocytes or the presence of metabolites of polycyclic aromatic compounds in urine in a group of workers exposed to bitumen fumes will provide further relevant information.
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Affiliation(s)
- T J Partanen
- International Agency for Research on Cancer, Lyon, France
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Moreau T, Hours M, Comi G, Adeleine P, Confavreux C. Prestimus: Predictive estimates in muutple sclerosis a European multicentric prospective study. J Neuroimmunol 1995. [DOI: 10.1016/0165-5728(95)98874-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hours M, Dananche B, Fevotte J, Bergeret A, Ayzac L, Cardis E, Etard JF, Pallen C, Roy P, Fabry J. Bladder cancer and occupational exposures. Scand J Work Environ Health 1994; 20:322-30. [PMID: 7863295 DOI: 10.5271/sjweh.1390] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
OBJECTIVES A hospital-based case-referent study was carried out in Lyon with the purpose of generating hypotheses about the role of occupational exposures to 320 compounds in bladder carcinogenesis. METHODS Job histories were obtained by questionnaire for 116 cases and 232 reference patients with diseases other than cancer (one referent from the same hospital ward and one from another ward of the same hospital per case); the referents were matched for gender, hospital, age, and nationality. Systematic coding of exposures, with a blind analysis of job histories, was carried out by a team of experts in chemistry and occupational health. RESULTS Significantly elevated odds ratios were observed for exposure to pyrolysis and combustion products [odds ratio (OR) 2.3, 95% confidence interval (95% CI) 1.0-4.0] when the general referents were used and for cutting fluids (OR 2.6, 95% CI 1.2-5.4) when tobacco consumption was adjusted for. The latter was highest among the category consisting of blue-collar and unskilled workers, supervisors, and agricultural workers (OR 4.6 95% CI 2.0-10.6), while the odds ratio for the other category was 0.8 (95% CI 0.3-2.7). An elevated odds ratio for exposure to inks was observed for the women (OR 14.0, 95% CI 1.8-106.5) on the basis of 14 exposed cases, but confounding factors could have been responsible for this result. Odds ratios for several other exposures (rubber: OR 5.7, nitrates: OR 8.2, coke dust: OR 3.5, meat additives: OR 3.8) were also elevated, but not significantly so when based on a small number of exposed cases. CONCLUSION The observations of this investigation should be tested in future studies, in particular since exposures to agents such as cutting fluids or pyrolysis products are ubiquitous in industrial settings and may present an important public health hazard.
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Affiliation(s)
- M Hours
- Institut d'Epidémiologie, Université Claude Bernard, Lyon, France
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Abstract
The village-based surveillance system for guinea worm disease (dracunculiasis), which has been established in all endemic villages in Ghana, was used to carry out a retrospective study of long-term disability due to the disease. A sample of 195 cases was interviewed and examined, 12-18 months after emergence of the worm. Currently continuing pain when walking or working, attributable by its location and date of onset to the episode of dracunculiasis, was reported by 55 persons (28.2%). Some difficulty in performing at least one of 6 everyday physical activities, attributable after careful interview to the episode, was reported by 66 respondents (34.0%), of whom 10 (5.1%) were unable to carry out one of the activities. In one case, the disease had caused impairment of movement of the joints of the right thumb. The prevalence of serious permanent physical impairment among the cases in the study was thus 0.5%.
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Affiliation(s)
- M Hours
- UNICEF Phnom Penh, Bangkok, Thailand
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Fontanet AL, Johnston DB, Walker AM, Rooney W, Thimasarn K, Sturchler D, Macdonald M, Hours M, Wirth DF. High prevalence of mefloquine-resistant falciparum malaria in eastern Thailand. Bull World Health Organ 1993; 71:377-83. [PMID: 8324857 PMCID: PMC2393499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
In order to assess the risk and predictors of mefloquine resistance we monitored a cohort of 113 patients in eastern Thailand who had been treated for uncomplicated falciparum malaria with a single dose of 15 mg/kg of the drug and followed up for 42 days. The overall treatment failure rate at day 42 was 59.1% (95% confidence interval (CI) = 50%, 68%) with only 2.7% of the patients being lost to follow-up. There were 6.4% RIII, 20.9% RII, 31.8% RI, and 40.9% sensitive responses, based on a modified WHO classification. A low haemoglobin level on the day of treatment and diarrhoea during the first two days after treatment were independent predictors of treatment failure. These findings remained statistically significant in a Cox proportional hazards model, after controlling for other baseline characteristics and adverse effects. Although a history of digestive disorders prior to treatment was associated with diarrhoea on day 2 (P = 0.024), it was in itself not a predictor of treatment failure (adjusted hazard ratio = 1.16; 95% CI = 0.35, 2.14). A total of 60 patients with an R response were hospitalized for 7 days to receive supervised treatment with quinine-tetracycline. Only three had a positive thick smear for asexual forms of Plasmodium falciparum 14 days later, and quinine-tetracycline therefore remains a good alternative treatment for mefloquine-resistant falciparum malaria.
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Affiliation(s)
- A L Fontanet
- Epidemiology Department, Harvard School of Public Health, Boston, MA 02115
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Hours M, Bertholon J, Esteve J, Cardis E, Freyssinet CL, Quelin P, Fabry J. Mortality experience in a polyamide-polyester factory. Scand J Work Environ Health 1986; 12:455-60. [PMID: 3787217 DOI: 10.5271/sjweh.2112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Chemical workers have become increasingly concerned about the presence of carcinogens in their occupational environment. As a result, a number of studies of excess cancer mortality have been undertaken in groups of workers with well-characterized exposures. This paper reports the results of one such study carried out in a polyamide-polyester factory in France. A retrospective cohort design was chosen to evaluate the effect of exposure to phthalates, nickel catalyzers, and other chemicals in the work environment. Only a slight excess of cancers, marginally related to exposure category yet not significantly related to length of exposure, was found. The cohort, however, was young but stable, and a continued follow-up is therefore both feasible and justifiable, since it is likely to yield important information about the potential hazards associated with the tergal polymer industry.
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