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Hedin G, Garmy P, Norell-Clarke A, Tønnesen H, Hagell P, Westergren A. Measurement properties of the minimal insomnia symptom scale (MISS) in adolescents. SLEEP SCIENCE AND PRACTICE 2022. [DOI: 10.1186/s41606-022-00075-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The Minimal Insomnia Symptom Scale (MISS) is a three-item screening instrument that has been found to be psychometrically sound and capable of screening for insomnia among adults and older people. This study aimed to test the measurement properties of the MISS together with an additional item focusing on daytime functioning among adolescents using the Rasch measurement model.
Methods
A cross-sectional design was used, and data from adolescents (age 13–17 years, n = 3022) were analyzed using the Rasch measurement model.
Results
The MISS had good measurement properties. When adding the item “daytime disturbance”, the measurement properties deteriorated. When replacing the original MISS item “not rested by sleep” with the item “daytime disturbance”, the measurement properties slightly improved. We label this new scale the MISS-Revised (MISS-R). The reliability was better for the MISS-R (0.55) compared to the MISS (0.50). The optimal cut-off was found to be > 6 points, both for the MISS and the MISS-R.
Conclusions
This study provides general support that both the MISS as well as the MISS-R have good fit to the Rasch model. At this stage, neither the MISS nor the MISS-R can be advocated over the other for use among adolescents, although the MISS-R had slightly better reliability than the MISS. Additional studies are needed to determine the clinically optimal cut-score for identification of insomnia.
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Busija L, Ackerman IN, Haas R, Wallis J, Nolte S, Bentley S, Miura D, Hawkins M, Buchbinder R. Adult Measures of General Health and Health‐Related Quality of Life. Arthritis Care Res (Hoboken) 2020; 72 Suppl 10:522-564. [DOI: 10.1002/acr.24216] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/07/2020] [Indexed: 12/15/2022]
Affiliation(s)
| | | | - Romi Haas
- Cabrini Institute, Malvern, Victoria, Australia, and Monash University Melbourne Victoria Australia
| | - Jason Wallis
- Cabrini Institute, Malvern, Victoria, Australia, and Monash University Melbourne Victoria Australia
| | - Sandra Nolte
- Charité – Universitätsmedizin Berlin and Berlin Institute of Health, Berlin, Germany, ICON GmbH, Munich, Germany, and Deakin University Burwood Victoria Australia
| | - Sharon Bentley
- Queensland University of Technology Kelvin Grove Queensland Australia
| | | | - Melanie Hawkins
- Deakin University, Burwood, Victoria, Australia, and Swinburne University of Technology Melbourne Victoria Australia
| | - Rachelle Buchbinder
- Cabrini Institute, Malvern, Victoria, Australia, and Monash University Melbourne Victoria Australia
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Rouse M, Twiss J, McKenna SP. Co-calibrating quality-of-life scores from three pulmonary disorders: implications for comparative-effectiveness research. J Med Econ 2016; 19:596-603. [PMID: 26824603 DOI: 10.3111/13696998.2016.1148700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background Efficient use of health resources requires accurate outcome assessment. Disease-specific patient-reported outcome (PRO) measures are designed to be highly relevant to patients with a specific disease. They have advantages over generic PROs that lack relevance to patient groups and miss crucial impacts of illness. It is thought that disease-specific measurement cannot be used in comparative effectiveness research (CER). The present study provides further evidence of the value of disease-specific measures in making valid comparisons across diseases. Methods The Asthma Life Impact Scale (ALIS, 22 items), Living with Chronic Obstructive Pulmonary Disease (LCOPD, 22 items) scale, and Cambridge Pulmonary Hypertension Outcome Review (CAMPHOR, 25 items) were completed by 140, 162, and 91 patients, respectively. The three samples were analyzed for fit to the Rasch model, then combined into a scale consisting of 58 unique items and re-analyzed. Raw scores on the three measures were co-calibrated and a transformation table produced. Results The scales fit the Rasch model individually (ALIS Chi(2) probability value (p-Chi(2)) = 0.05; LCOPD p-Chi(2 )=( )0.38; CAMPHOR p-Chi(2 )=( )0.92). The combined data also fit the Rasch model (p-Chi(2 )=( )0.22). There was no differential item functioning related to age, gender, or disease. The co-calibrated scales successfully distinguished between perceived severity groups (p < 0.001). Limitations The samples were drawn from different sources. For scales to be co-calibrated using a common item design, they must be based on the same theoretical construct, be unidimensional, and have overlapping items. Conclusions The results showed that it is possible to co-calibrate scores from disease-specific PRO measures. This will permit more accurate and sensitive outcome measurement to be incorporated into CER. The co-calibration of needs-based disease-specific measures allows the calculation of γ scores that can be used to compare directly the impact of any type of interventions on any diseases included in the co-calibration.
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Affiliation(s)
- M Rouse
- a Galen Research Ltd , Manchester , UK
| | - J Twiss
- a Galen Research Ltd , Manchester , UK
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Westergren A, Broman JE, Hellström A, Fagerström C, Willman A, Hagell P. Measurement properties of the minimal insomnia symptom scale as an insomnia screening tool for adults and the elderly. Sleep Med 2015; 16:379-84. [PMID: 25666846 DOI: 10.1016/j.sleep.2014.10.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 10/03/2014] [Accepted: 10/09/2014] [Indexed: 12/28/2022]
Abstract
BACKGROUND The psychometric properties of the three-item Minimal Insomnia Symptom Scale (MISS) were evaluated using the classical test theory. Different cut-offs for identifying insomnia were suggested in two age groups (≥6 and ≥7 among adult and elderly people, respectively). The aim of the present study was to test the measurement properties of the MISS using the Rasch measurement model, with special emphasis on differential item functioning by gender and age. METHODS Cross-sectional MISS data from adult (age 20-64 years, n = 1075) and elderly (age 65+, n = 548) populations were analysed using the Rasch measurement model. RESULTS Data generally met Rasch model requirements and the scale could separate between two distinct groups of people. Differential item functioning was found by age but not gender. The difference between the adult and elderly samples was lower for the originally recommended ≥6 points cut-off (0.09 logits) than for the ≥7 points cut-off (0.23 logits), but greater at the lower and higher ends of the scale. CONCLUSIONS This study provides general support for the measurement properties of the MISS. Caution should be exercised in comparing raw MISS scores between age groups, but applying a ≥6 cut-off appears to allow for valid comparisons between adults and the elderly regarding the presence of insomnia. Nevertheless, additional studies are needed to determine the clinically optimal cut-score for identification of insomnia.
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Affiliation(s)
- Albert Westergren
- The PRO-CARE Group, School of Health and Society, Kristianstad University, Kristianstad, Sweden.
| | - Jan-Erik Broman
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
| | - Amanda Hellström
- Department of Health, Blekinge Institute of Technology, Karlskrona, Sweden; Department of Health and Caring Sciences, Linnæus University, Kalmar, Sweden
| | - Cecilia Fagerström
- Department of Health, Blekinge Institute of Technology, Karlskrona, Sweden
| | - Ania Willman
- Department of Health, Blekinge Institute of Technology, Karlskrona, Sweden; The Department of Care Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Peter Hagell
- The PRO-CARE Group, School of Health and Society, Kristianstad University, Kristianstad, Sweden
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Schuler M, Musekamp G, Bengel J, Nolte S, Osborne RH, Faller H. Measurement invariance across chronic conditions: a systematic review and an empirical investigation of the Health Education Impact Questionnaire (heiQ™). Health Qual Life Outcomes 2014. [PMID: 24758346 DOI: 10.1186/1477-7525-12-56.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To examine whether lack of measurement invariance (MI) influences mean comparisons among different disease groups, this paper provides (1) a systematic review of MI in generic constructs across chronic conditions and (2) an empirical analysis of MI in the Health Education Impact Questionnaire (heiQ™). METHODS (1) We searched for studies of MI among different chronic conditions in online databases. (2) Multigroup confirmatory factor analyses were used to study MI among five chronic conditions (orthopedic condition, rheumatism, asthma, COPD, cancer) in the heiQ™ with N = 1404 rehabilitation inpatients. Impact on latent and composite mean differences was examined. RESULTS (1) A total of 30 relevant studies suggested that about one in three items lacked MI. However, only four studies examined impact on latent mean differences. Scale means were only affected in one of these three studies. (2) Across the eight heiQ™ scales, seven scales had items with lack of MI in at least one disease group. However, in only two heiQ™ scales were some latent or composite mean differences affected. CONCLUSIONS Lack of MI among disease groups is common and may have a relevant influence on mean comparisons when using generic instruments. Therefore, when comparing disease groups, tests of MI should be implemented. More studies of MI and according impact on mean differences in generic questionnaires are needed.
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Affiliation(s)
- Michael Schuler
- Department of Medical Psychology and Psychotherapy, Medical Sociology and Rehabilitation Sciences Section, University of Würzburg, Klinikstr, 3, D-97070 Wuerzburg, Germany.
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Schuler M, Musekamp G, Bengel J, Nolte S, Osborne RH, Faller H. Measurement invariance across chronic conditions: a systematic review and an empirical investigation of the Health Education Impact Questionnaire (heiQ™). Health Qual Life Outcomes 2014; 12:56. [PMID: 24758346 PMCID: PMC4021509 DOI: 10.1186/1477-7525-12-56] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 04/17/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To examine whether lack of measurement invariance (MI) influences mean comparisons among different disease groups, this paper provides (1) a systematic review of MI in generic constructs across chronic conditions and (2) an empirical analysis of MI in the Health Education Impact Questionnaire (heiQ™). METHODS (1) We searched for studies of MI among different chronic conditions in online databases. (2) Multigroup confirmatory factor analyses were used to study MI among five chronic conditions (orthopedic condition, rheumatism, asthma, COPD, cancer) in the heiQ™ with N = 1404 rehabilitation inpatients. Impact on latent and composite mean differences was examined. RESULTS (1) A total of 30 relevant studies suggested that about one in three items lacked MI. However, only four studies examined impact on latent mean differences. Scale means were only affected in one of these three studies. (2) Across the eight heiQ™ scales, seven scales had items with lack of MI in at least one disease group. However, in only two heiQ™ scales were some latent or composite mean differences affected. CONCLUSIONS Lack of MI among disease groups is common and may have a relevant influence on mean comparisons when using generic instruments. Therefore, when comparing disease groups, tests of MI should be implemented. More studies of MI and according impact on mean differences in generic questionnaires are needed.
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Affiliation(s)
- Michael Schuler
- Department of Medical Psychology and Psychotherapy, Medical Sociology and Rehabilitation Sciences Section, University of Würzburg, Klinikstr, 3, D-97070 Wuerzburg, Germany.
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Hagell P. Testing Rating Scale Unidimensionality Using the Principal Component Analysis (PCA)/<i>t</i>-Test Protocol with the Rasch Model: The Primacy of Theory over Statistics. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ojs.2014.46044] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nilsson MH, Bladh S, Hagell P. Fatigue in Parkinson's disease: measurement properties of a generic and a condition-specific rating scale. J Pain Symptom Manage 2013; 46:737-46. [PMID: 23507131 DOI: 10.1016/j.jpainsymman.2012.11.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 11/14/2012] [Accepted: 11/20/2012] [Indexed: 11/26/2022]
Abstract
CONTEXT High-quality fatigue rating scales are needed to advance the understanding of fatigue and determine the efficacy of interventions. Several fatigue scales are used in Parkinson's disease, but few have been tested using modern psychometric methodology (Rasch analysis). OBJECTIVES To examine the measurement properties of the generic Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) scale and the condition-specific 16-item Parkinson Fatigue Scale (PFS-16) using Rasch analysis. METHODS Postal survey data (n=150; 47% women; mean age 70 years) were Rasch analyzed. The PFS-16 scores were tested according to both the original polytomous and the suggested alternative dichotomized scoring methods. RESULTS The PFS-16 showed overall Rasch model fit, whereas the FACIT-F showed signs of misfit, which probably was the result of a sleepiness-related item and mixing of positively/negatively worded items. There was no differential item functioning by disease duration but by fatigue status (greater likelihood of needing to sleep or rest during the day among people classified as nonfatigued) in the PFS-16 and FACIT-F. However, this did not impact total score-based estimated person measures. Targeting and reliability (≥0.86) were good, but the dichotomized PFS-16 showed compromised measurement precision. Polytomous and dichotomized PFS-16 and FACIT-F scores identified six, three, and four statistically distinct sample strata, respectively. CONCLUSION We found general support for the measurement properties of both scales. However, polytomous PFS-16 scores exhibited advantages compared with dichotomous PFS-16 and FACIT-F scores. Dichotomization of item responses compromises measurement precision and the ability to separate people, and should be avoided.
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Affiliation(s)
- Maria H Nilsson
- Department of Health Sciences, Lund University, Lund, Sweden
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Abstract
BACKGROUND The Nottingham Health Profile (NHP) assesses perceived emotional, social, and physical health problems and the extent to which such problems affect daily activities. The objective of our study was to determine the feasibility of the NHP for nursing home residents. METHODS A prospective multicenter observational study was conducted in 11 nursing homes from April 2008 to December 2009 in which 286 newly admitted residents were included. Cognitive status was evaluated using the Mini-Mental State Examination (MMSE). The feasibility of the NHP was determined by administration rate, time and type of administration, and missing items. A cut-off point stating the MMSE score up to which the NHP can be applied was determined with receiver operating characteristics curves (ROC). Internal consistency (Cronbach's α) and test-retest reliability (intraclass correlation; ICC) were evaluated. RESULTS Administration rate was 44.4% (n = 127) ranging from 76.1% for normal residents to 5.9% for residents with a severe cognitive impairment. An average of 12.6 (SD + 6.0) minutes was required for data collection and 92.1% (n = 117) of the questionnaires were completed during an interview. Frequently missing items were in the domain "Pain" (47.2). MMSE scores were significantly higher in the group with a completed NHP (P < 0.001) and analyses of ROC curves indicated a cut-off point of >16 on the MMSE score. Cronbach's α was >0.7 in four domains and >0.6 in two domains, while the ICC in all domains was >0.7. CONCLUSION The NHP is a feasible questionnaire for residents with normal cognitive function and moderate cognitive impairment, and can be administered in nursing homes.
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Arnould C, Vandervelde L, Batcho CS, Penta M, Thonnard JL. Can manual ability be measured with a generic ABILHAND scale? A cross-sectional study conducted on six diagnostic groups. BMJ Open 2012; 2:bmjopen-2012-001807. [PMID: 23117570 PMCID: PMC3533037 DOI: 10.1136/bmjopen-2012-001807] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES Several ABILHAND Rasch-built manual ability scales were previously developed for chronic stroke (CS), cerebral palsy (CP), rheumatoid arthritis (RA), systemic sclerosis (SSc) and neuromuscular disorders (NMD). The present study aimed to explore the applicability of a generic manual ability scale unbiased by diagnosis and to study the nature of manual ability across diagnoses. DESIGN Cross-sectional study. SETTING Outpatient clinic homes (CS, CP, RA), specialised centres (CP), reference centres (CP, NMD) and university hospitals (SSc). PARTICIPANTS 762 patients from six diagnostic groups: 103 CS adults, 113 CP children, 112 RA adults, 156 SSc adults, 124 NMD children and 124 NMD adults. PRIMARY AND SECONDARY OUTCOME MEASURES Manual ability as measured by the ABILHAND disease-specific questionnaires, diagnosis and nature (ie, uni-manual or bi-manual involvement and proximal or distal joints involvement) of the ABILHAND manual activities. RESULTS The difficulties of most manual activities were diagnosis dependent. A principal component analysis highlighted that 57% of the variance in the item difficulty between diagnoses was explained by the symmetric or asymmetric nature of the disorders. A generic scale was constructed, from a metric point of view, with 11 items sharing a common difficulty among diagnoses and 41 items displaying a category-specific location (asymmetric: CS, CP; and symmetric: RA, SSc, NMD). This generic scale showed that CP and NMD children had significantly less manual ability than RA patients, who had significantly less manual ability than CS, SSc and NMD adults. However, the generic scale was less discriminative and responsive to small deficits than disease-specific instruments. CONCLUSIONS Our finding that most of the manual item difficulties were disease-dependent emphasises the danger of using generic scales without prior investigation of item invariance across diagnostic groups. Nevertheless, a generic manual ability scale could be developed by adjusting and accounting for activities perceived differently in various disorders.
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Affiliation(s)
- Carlyne Arnould
- Physical and Occupational Therapy Departments, Paramedical Category, Haute Ecole Louvain en Hainaut, Montignies-sur-Sambre, Belgium
| | - Laure Vandervelde
- Physical Therapy Department, Institut Parnasse Deux-Alice, Haute Ecole Leonard de Vinci, Brussels, Belgium
| | | | - Massimo Penta
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
| | - Jean-Louis Thonnard
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
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Sjödahl Hammarlund C, Hagell P, Nilsson MH. Motor and non-motor predictors of illness-related distress in Parkinson's disease. Parkinsonism Relat Disord 2011; 18:299-302. [PMID: 22100143 DOI: 10.1016/j.parkreldis.2011.10.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 09/19/2011] [Accepted: 10/28/2011] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To identify motor and non-motor symptoms independently associated with distress in Parkinson's disease (PD). METHOD Clinical and patient-reported data from 118 people with PD (mean age and PD-duration, 64 and 8 years) were analyzed regarding associations with patient-reported distress using multiple regressions (controlling for age). RESULTS Non-motor symptoms independently associated with distress were pain, fatigue, sleep, depression and anxiety (R(2), 0.81). The only significant motor aspect was mobility (R(2), 0.31). When considering both motor and non-motor symptoms, fatigue, pain, depression and sleep showed independent associations with distress (R(2), 0.76). CONCLUSION Distress in PD is primarily associated with non-motor features.
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Bladh S, Nilsson MH, Hariz GM, Westergren A, Hobart J, Hagell P. Psychometric performance of a generic walking scale (Walk-12G) in multiple sclerosis and Parkinson's disease. J Neurol 2011; 259:729-38. [PMID: 21956376 DOI: 10.1007/s00415-011-6254-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 09/09/2011] [Accepted: 09/12/2011] [Indexed: 10/17/2022]
Abstract
Walking difficulties are common in neurological and other disorders, as well as among the elderly. There is a need for reliable and valid instruments for measuring walking difficulties in everyday life since existing gait tests are clinician rated and focus on situation specific capacity. The Walk-12G was adapted from the 12-item multiple sclerosis walking scale as a generic patient-reported rating scale for walking difficulties in everyday life. The aim of this study is to examine the psychometric properties of the Walk-12G in people with multiple sclerosis (MS) and Parkinson's disease (PD). The Walk-12G was translated into Swedish and evaluated qualitatively among 25 people with and without various neurological and other conditions. Postal survey (MS, n = 199; PD, n = 189) and clinical (PD, n = 36) data were used to test its psychometric properties. Respondents considered the Walk-12G relevant and easy to use. Mean completion time was 3.5 min. Data completeness was good (<5% missing item responses) and tests of scaling assumptions supported summing item scores to a total score (corrected item-total correlations >0.6). Coefficient alpha and test-retest reliabilities were >0.9, and standard errors of measurement were 2.3-2.8. Construct validity was supported by correlations in accordance with a priori expectations. Results are similar to those with previous Walk-12G versions, indicating that scale adaptation was successful. Data suggest that the Walk-12G meets rating scale criteria for clinical trials, making it a valuable complement to available gait tests. Further studies involving other samples and application of modern psychometric methods are warranted to examine the scale in more detail.
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Affiliation(s)
- Stina Bladh
- Department of Health Sciences, Lund University, Lund, Sweden
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Martinez-Martin P, Jeukens-Visser M, Lyons KE, Rodriguez-Blazquez C, Selai C, Siderowf A, Welsh M, Poewe W, Rascol O, Sampaio C, Stebbins GT, Goetz CG, Schrag A. Health-related quality-of-life scales in Parkinson's disease: Critique and recommendations. Mov Disord 2011; 26:2371-80. [PMID: 21735480 DOI: 10.1002/mds.23834] [Citation(s) in RCA: 198] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Revised: 04/28/2011] [Accepted: 05/02/2011] [Indexed: 11/08/2022] Open
Affiliation(s)
- Pablo Martinez-Martin
- Alzheimer Disease Research Unit, CIEN Foundation-Reina Sofia Foundation, Alzheimer Center Reina Sofia Foundation, Carlos III Institute of Health, Madrid, Spain.
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Birath CS, DeMarinis V, Stenbacka M, af Klinteberg B. Women with alcohol problems: the possible significance of personality clustering for treatment planning. Drug Alcohol Rev 2011; 30:207-15. [PMID: 21355913 DOI: 10.1111/j.1465-3362.2010.00221.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION AND AIMS Establishing subgroups in clinical practice is important for treatment planning. The aim of the study was to cluster the study group subjects according to personality traits and psychological health variables and to establish possible differences in treatment outcome in terms of: (i) drinking outcomes (gram and number of drinking days); (ii) perceived physiological health; and (iii) use of treatment resources (length of time in treatment and number of visits) among 134 treatment-seeking women with alcohol problems in a clinical context, between the two clusters obtained. DESIGN AND METHODS Data were collected from 134 consecutive women at a Swedish clinic specialised in treating women with alcohol problems. A hierarchical cluster analysis was performed on the basis of self-rated personality scale scores and psychological health variables. RESULTS Two clusters were identified: one in which the women displayed personality and psychological health scores indicating problems (Cluster 1); and another where the women showed personality and psychological health scores within the norm range (Cluster 2). Alcohol consumption rates at the start of treatment were the same in both clusters. The consumption rates were also the same at the end of treatment for the cluster, showing a significant decrease in alcohol consumption in each. The Cluster 1 women, however, had a significantly higher number of visits at the clinic, and rated the consequences of their alcohol drinking as being significantly worse than Cluster 2 women. DISCUSSION AND CONCLUSIONS The importance of individual differences according to personality traits for treatment planning is discussed in terms of the need for variation in treatment time and methods.
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Bode RK, Heinemann AW, Butt Z, Stallings J, Taylor C, Rowe M, Roth EJ. Development and validation of participation and positive psychologic function measures for stroke survivors. Arch Phys Med Rehabil 2010; 91:1347-56. [PMID: 20801251 PMCID: PMC3815554 DOI: 10.1016/j.apmr.2010.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 05/21/2010] [Accepted: 06/18/2010] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To evaluate the reliability and validity of Neurologic Quality of Life (NeuroQOL) item banks that assess quality-of-life (QOL) domains not typically included in poststroke measures. DESIGN Secondary analysis of item responses to selected NeuroQOL domains. SETTING Community. PARTICIPANTS Community-dwelling stroke survivors (n=111) who were at least 12 months poststroke. INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES Five measures developed for 3 NeuroQoL domains: ability to participate in social activities, satisfaction with participation in social activities, and positive psychologic function. RESULTS A single bank was developed for the positive psychologic function domain, but 2 banks each were developed for the ability-to-participate and satisfaction-with-participation domains. The resulting item banks showed good psychometric properties and external construct validity with correlations with the legacy instruments, ranging from .53 to .71. Using these measures, stroke survivors in this sample reported an overall high level of QOL. CONCLUSIONS The NeuroQoL-derived measures are promising and valid methods for assessing aspects of QOL not typically measured in this population.
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Affiliation(s)
- Rita K Bode
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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Hagell P, Hedin PJ, Meads DM, Nyberg L, McKenna SP. Effects of method of translation of patient-reported health outcome questionnaires: a randomized study of the translation of the Rheumatoid Arthritis Quality of Life (RAQoL) Instrument for Sweden. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2010; 13:424-430. [PMID: 20070642 DOI: 10.1111/j.1524-4733.2009.00677.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
AIMS To compare two versions of a questionnaire translated using forward-backward (FB) translation and dual-panel (DP) methodologies regarding preference of wording and psychometric properties. METHODS The Rheumatoid Arthritis Quality of Life instrument was adapted into Swedish by two independent groups using FB and DP methodologies, respectively. Seven out of thirty resulting items were identical. Nonidentical items were evaluated regarding preference of wording by 23 bilingual Swedes, 50 people with rheumatoid arthritis (RA), and 2 lay panels (n = 11). Psychometric performance was assessed from a postal survey of 200 people with RA randomly assigned to complete one version first and the other 2 weeks later. RESULTS Preference did not differ among the 23 bilinguals (P = 0.196), whereas patients and lay people preferred DP over FB item versions (P < 0.0001). Postal survey response rates were 74% (FB) and 75% (DP). There were more missing item responses in the FB than the DP version (6.9% vs. 5.6%; P < 0.0001). Floor/ceiling effects were small (FB, 6.1/0%; DP, 4.4/0.7%) and reliability was 0.92 for both versions. Construct validity was similar for both versions. Differential item functioning by version was detected for five items but cancelled out and did not affect estimated person measures. CONCLUSIONS The DP approach showed advantages over FB translation in terms of preference by the target population and by lay people, whereas there were no obvious psychometric differences. This suggests advantages of DP over FB translation from the patients' perspective, and does not support the commonly held view that FB translation is the "gold standard."
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Affiliation(s)
- Peter Hagell
- Department of Health Sciences, Lund University, Lund, Sweden.
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