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Lee SB, Park Y, Kim DW, Kwon JW, Ha JW, Yang JH, Lee BH, Suk KS, Moon SH, Kim HS, Lee HM. Association between mortality risk and the number, location, and sequence of subsequent fractures in the elderly. Osteoporos Int 2021; 32:233-241. [PMID: 32820370 DOI: 10.1007/s00198-020-05602-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 08/13/2020] [Indexed: 12/16/2022]
Abstract
UNLABELLED The mortality risk showed a positive correlation as the number of subsequent fractures increased. Hip fracture showed the greatest association with mortality risk, followed by vertebral fracture. For the combination of hip and vertebral fracture, a hip fracture after a vertebral fracture showed the highest mortality risk. INTRODUCTION It is unclear whether subsequent fractures or a certain location and sequence of subsequent fractures are associated with mortality risk in the elderly. We aimed to investigate the relationship between subsequent fractures and mortality risk. METHODS Using the Korean National Health Insurance Research Database, we analyzed the cohort data of 24,756 patients aged > 60 years who sustained fractures between 2002 and 2013. Cox regression was used to assess the mortality risk associated with the number, locations, and sequences of subsequent fractures. RESULTS Mortality hazard ratios (HRs) for women and men were shown to be associated with the number of subsequent fractures (one, 1.63 (95% confidence interval [CI], 1.48-1.80) and 1.42 (95% CI, 1.28-1.58); two, 1.75 (95% CI, 1.47-2.08) and 2.03 (95% CI, 1.69-2.43); three or more, 2.46(95% CI, 1.92-3.15) and 1.92 (95% CI, 1.34-2.74), respectively). For women, the mortality risk was high when hip (HR, 2.49; 95% CI, 1.80-3.44) or vertebral (HR, 1.40; 95% CI, 1.03-1.90) fracture occurred as a second fracture. Compared with a single hip fracture, there was a high mortality risk in the group with hip fracture after the first vertebral fracture (HR, 2.90; 95% CI, 1.86-4.54), followed by vertebral fracture after the first hip fracture (HR, 1.90; 95% CI, 1.12-3.22). CONCLUSION The mortality risk showed a positive correlation as the number of subsequent fractures increased. Hip fracture showed the greatest association with mortality risk, followed by vertebral fracture. For the combination of hip and vertebral fracture, a hip fracture after a vertebral fracture showed the highest mortality risk.
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Affiliation(s)
- S-B Lee
- Department of Orthopedic Surgery, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Republic of Korea
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y Park
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang, 10444, Republic of Korea.
| | - D-W Kim
- Research Analysis Team, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea
| | - J-W Kwon
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang, 10444, Republic of Korea
| | - J-W Ha
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang, 10444, Republic of Korea
| | - J-H Yang
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - B H Lee
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - K-S Suk
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S-H Moon
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H-S Kim
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H-M Lee
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
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Axelsson KF, Johansson H, Lundh D, Möller M, Lorentzon M. Association Between Recurrent Fracture Risk and Implementation of Fracture Liaison Services in Four Swedish Hospitals: A Cohort Study. J Bone Miner Res 2020; 35:1216-1223. [PMID: 32097504 DOI: 10.1002/jbmr.3990] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 01/16/2020] [Accepted: 01/29/2020] [Indexed: 11/07/2022]
Abstract
Structured secondary preventions programs, called fracture liaison services (FLSs), increase the rate of evaluation with bone densitometry and use of osteoporosis medication after fracture. However, the evidence regarding the effect on the risk of recurrent fracture is insufficient. The aim of this study was to investigate if implementation of FLS was associated with reduced risk of recurrent fractures. In this retrospective cohort study, electronic health records during 2012 to 2017 were used to identify a total of 21,083 patients from four hospitals in Western Sweden, two with FLS (n = 15,449) and two without (n = 5634). All patients aged 50 years or older (mean age 73.9 [SD 12.4] years, 76% women) with a major osteoporotic index fracture (hip, clinical spine, humerus, radius, and pelvis) were included. The primary outcome was recurrent major osteoporotic fracture. All patients with an index fracture during the FLS period (n = 13,946) were compared with all patients in the period before FLS implementation (n = 7137) in an intention-to-treat analysis. Time periods corresponding to the FLS hospitals were used for the non-FLS hospitals. In the hospitals with FLSs, there were 1247 recurrent fractures during a median follow-up time of 2.2 years (range 0-6 years). In an unadjusted Cox model, the risk of recurrent fracture was 18% lower in the FLS period compared with the control period (hazard ratio = 0.82, 95% confidence interval [CI] 0.73-0.92, p = .001), corresponding to a 3-year number needed to screen of 61, and did not change after adjustment for clinical risk factors. In the hospitals without FLSs, no change in recurrent fracture rate was observed. Treatment decisions were made according to the Swedish treatment guidelines. In conclusion, implementation of FLS was associated with a reduced risk of recurrent fracture, indicating that FLSs should be included routinely at hospitals treating fracture patients. © 2020 The Authors. Journal of Bone and Mineral Research published by American Society for Bone and Mineral Research.
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Affiliation(s)
- Kristian F Axelsson
- Department of Orthopaedic Surgery, Region Västra Götaland, Skaraborg Hospital, Skövde, Sweden.,Geriatric Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Helena Johansson
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
| | - Dan Lundh
- Department of Natural Science and Biomedicine, School of Health and Welfare, Jönköping University, Jönköping, Sweden
| | - Michael Möller
- Region Västra Götaland, Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden.,Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Mattias Lorentzon
- Geriatric Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia.,Region Västra Götaland, Geriatric Medicine, Sahlgrenska University Hospital, Mölndal, Sweden
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3
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Banefelt J, Åkesson KE, Spångéus A, Ljunggren O, Karlsson L, Ström O, Ortsäter G, Libanati C, Toth E. Risk of imminent fracture following a previous fracture in a Swedish database study. Osteoporos Int 2019; 30:601-609. [PMID: 30680431 PMCID: PMC6422949 DOI: 10.1007/s00198-019-04852-8] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/10/2019] [Indexed: 01/03/2023]
Abstract
This study examined the imminent risk of a future fracture within 1 and 2 years following a first fracture in women aged 50 years and older and assessed independent factors associated with risk of subsequent fractures. The study highlights the need to intervene rapidly after a fracture to prevent further fractures. INTRODUCTION This study aims to determine the imminent risk of subsequent fractures within 1 and 2 years following a first fracture and to assess independent factors associated with subsequent fractures. METHODS Retrospective, observational cohort study of women aged ≥ 50 years with a fragility fracture was identified from Swedish national registers. Clinical/demographic characteristics at the time of index fracture and cumulative fracture incidences up to 12 and 24 months following index fracture were calculated. Risk factors for subsequent fracture were identified using multivariate regression analysis. RESULTS Two hundred forty-two thousand one hundred eight women (mean [SD] age 74 [12.5] years) were included. The cumulative subsequent fracture incidence at 12 months was 7.1% (95% confidence interval [CI], 6.9-7.2) and at 24 months was 12.0% (95% CI, 11.8-12.1). The rate of subsequent fractures was highest in the first month (~ 15 fractures per 1000 patient-years) and remained steady between 4 and 24 months (~ 5 fractures/1000 patient-years). Higher age was an independent risk factor for imminent subsequent fractures (at 24 months, sub-distribution hazard ratio [HR], 3.07; p < 0.001 for women 80-89 years [reference 50-59 years]). Index vertebral fracture was a strong independent risk factor for subsequent fracture (sub-distribution HR, 2.72 versus hip fracture; p < 0.001 over 12 months; HR, 2.23; p < 0.001 over 24 months). CONCLUSIONS Our findings highlight the need to intervene rapidly after any fragility fracture in postmenopausal women. The occurrence of a fragility fracture provides healthcare systems with a unique opportunity to intervene to reduce the increased risk of subsequent fractures.
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Affiliation(s)
| | - K E Åkesson
- Department of Clinical Sciences Malmö, Clinical and Molecular Osteoporosis Research, Lund University, Malmö, Sweden
- Department of Orthopaedics, Skåne University Hospital, Malmö, Sweden
| | - A Spångéus
- Linköping University, Linköping University Hospital, Linköping, Sweden
| | - O Ljunggren
- Department of Medical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | | | - O Ström
- Quantify Research, Stockholm, Sweden
- Karolinska Institutet, Stockholm, Sweden
| | | | - C Libanati
- UCB Biopharma Sprl, Allée de la Recherche 60, 1070, Brussels, Belgium
| | - E Toth
- UCB Biopharma Sprl, Allée de la Recherche 60, 1070, Brussels, Belgium.
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Axelsson KF, Werling M, Eliasson B, Szabo E, Näslund I, Wedel H, Lundh D, Lorentzon M. Fracture Risk After Gastric Bypass Surgery: A Retrospective Cohort Study. J Bone Miner Res 2018; 33:2122-2131. [PMID: 30011091 DOI: 10.1002/jbmr.3553] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/13/2018] [Accepted: 07/07/2018] [Indexed: 12/20/2022]
Abstract
Gastric bypass surgery constitutes the most common and effective bariatric surgery to treat obesity. Gastric bypass leads to bone loss, but fracture risk following surgery has been insufficiently studied. Furthermore, the association between gastric bypass and fracture risk has not been studied in patients with diabetes, which is a risk factor for fracture and affected by surgery. In this retrospective cohort study using Swedish national databases, 38,971 obese patients undergoing gastric bypass were identified, 7758 with diabetes and 31,213 without. An equal amount of well-balanced controls were identified through multivariable 1:1 propensity score matching. The risk of fracture and fall injury was investigated using Cox proportional hazards and flexible parameter models. Fracture risk according to weight loss and degree of calcium and vitamin D supplementation 1-year postsurgery was investigated. During a median follow-up time of 3.1 (interquartile range [IQR], 1.7 to 4.6) years, gastric bypass was associated with increased risk of any fracture, in patients with and without diabetes using a multivariable Cox model (hazard ratio [HR] 1.26; 95% CI, 1.05 to 1.53; and HR 1.32; 95% CI, 1.18 to 1.47; respectively). Using flexible parameter models, the fracture risk appeared to increase with time. The risk of fall injury without fracture was also increased after gastric bypass. Larger weight loss or poor calcium and vitamin D supplementation after surgery were not associated with increased fracture risk. In conclusion, gastric bypass surgery is associated with an increased fracture risk, which appears to be increasing with time and not associated with degree of weight loss or calcium and vitamin D supplementation following surgery. An increased risk of fall injury was seen after surgery, which could contribute to the increased fracture risk. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Kristian F Axelsson
- Department of Orthopaedic Surgery, Skaraborg Hospital, Skövde, Sweden.,Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Malin Werling
- Department of Gastrosurgical Research & Education, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Björn Eliasson
- Department of Molecular and Clinical Medicine, the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Eva Szabo
- Department of Surgery. Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Ingmar Näslund
- Department of Surgery. Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Hans Wedel
- Health Metrics, Sahlgrenska Academin, University of Gothenburg, Gothenburg, Sweden
| | - Dan Lundh
- School of Bioscience, University of Skövde, Skövde, Sweden
| | - Mattias Lorentzon
- Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.,Geriatric Medicine, Sahlgrenska University Hospital, Mölndal, Sweden
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Axelsson KF, Wallander M, Johansson H, Lundh D, Lorentzon M. Hip fracture risk and safety with alendronate treatment in the oldest-old. J Intern Med 2017; 282:546-559. [PMID: 28857352 DOI: 10.1111/joim.12678] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND There is high evidence for secondary prevention of fractures, including hip fracture, with alendronate treatment, but alendronate's efficacy to prevent hip fractures in the oldest-old (≥80 years old), the population with the highest fracture risk, has not been studied. OBJECTIVE To investigate whether alendronate treatment amongst the oldest-old with prior fracture was related to decreased hip fracture rate and sustained safety. METHODS Using a national database of men and women undergoing a fall risk assessment at a Swedish healthcare facility, we identified 90 795 patients who were 80 years or older and had a prior fracture. Propensity score matching (four to one) was then used to identify 7844 controls to 1961 alendronate-treated patients. The risk of incident hip fracture was investigated with Cox models and the interaction between age and treatment was investigated using an interaction term. RESULTS The case and control groups were well balanced in regard to age, sex, anthropometrics and comorbidity. Alendronate treatment was associated with a decreased risk of hip fracture in crude (hazard ratio (HR) 0.62 (0.49-0.79), P < 0.001) and multivariable models (HR 0.66 (0.51-0.86), P < 0.01). Alendronate was related to reduced mortality risk (HR 0.88 (0.82-0.95) but increased risk of mild upper gastrointestinal symptoms (UGI) (HR 1.58 (1.12-2.24). The alendronate association did not change with age for hip fractures or mild UGI. CONCLUSION In old patients with prior fracture, alendronate treatment reduces the risk of hip fracture with sustained safety, indicating that this treatment should be considered in these high-risk patients.
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Affiliation(s)
- K F Axelsson
- Department of Orthopaedic Surgery, Skaraborg Hospital, Skövde, Sweden.,Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - M Wallander
- Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.,Department of Medicine Huddinge, Karolinska Institute, Stockholm, Sweden
| | - H Johansson
- Institute for Health and Ageing, Catholic University of Australia, Melbourne, Vic., Australia
| | - D Lundh
- School of Bioscience, University of Skövde, Skövde, Sweden
| | - M Lorentzon
- Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.,Geriatric Medicine, Sahlgrenska University Hospital, Mölndal, Sweden
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Axelsson KF, Nilsson AG, Wedel H, Lundh D, Lorentzon M. Association Between Alendronate Use and Hip Fracture Risk in Older Patients Using Oral Prednisolone. JAMA 2017; 318:146-155. [PMID: 28697254 PMCID: PMC5817469 DOI: 10.1001/jama.2017.8040] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
IMPORTANCE Oral glucocorticoid treatment increases fracture risk, and evidence is lacking regarding the efficacy of alendronate to protect against hip fracture in older patients using glucocorticoids. OBJECTIVE To investigate whether alendronate treatment in older patients using oral prednisolone is associated with decreased hip fracture risk and adverse effects. DESIGN, SETTING, AND PARTICIPANTS Retrospective cohort study using a national database (N = 433 195) of patients aged 65 years or older undergoing a health evaluation (baseline) at Swedish health care facilities; 1802 patients who were prescribed alendronate after at least 3 months of oral prednisolone treatment (≥5 mg/d) were identified. Propensity score matching was used to select 1802 patients without alendronate use from 6076 patients taking prednisolone with the same dose and treatment time criteria. Follow-up occurred between January 2008 and December 2014. EXPOSURES Alendronate vs no alendronate use; no patients had previously taken alendronate at the time of prednisolone initiation. MAIN OUTCOMES AND MEASURES The primary outcome was incident hip fracture. RESULTS Of the 3604 included patients, the mean age was 79.9 (SD, 7.5) years, and 2524 (70%) were women. After a median follow-up of 1.32 years (interquartile range, 0.57-2.34 years), there were 27 hip fractures in the alendronate group and 73 in the no-alendronate group, corresponding to incidence rates of 9.5 (95% CI, 6.5-13.9) and 27.2 (95% CI, 21.6-34.2) fractures per 1000 person-years, with an absolute rate difference of -17.6 (95% CI, -24.8 to -10.4). The use of alendronate was associated with a lower risk of hip fracture in a multivariable-adjusted Cox model (hazard ratio, 0.35; 95% CI, 0.22-0.54). Alendronate treatment was not associated with increased risk of mild upper gastrointestinal tract symptoms (alendronate vs no alendronate, 15.6 [95% CI, 11.6-21.0] vs 12.9 [95% CI, 9.3-18.0] per 1000 person-years; P = .40) or peptic ulcers (10.9 [95% CI, 7.7-15.5] vs 11.4 [95% CI, 8.0-16.2] per 1000 person-years; P = .86). There were no cases of incident drug-induced osteonecrosis and only 1 case of femoral shaft fracture in each group. CONCLUSIONS AND RELEVANCE Among older patients using medium to high doses of prednisolone, alendronate treatment was associated with a significantly lower risk of hip fracture over a median of 1.32 years. Although the findings are limited by the observational study design and the small number of events, these results support the use of alendronate in this patient group.
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Affiliation(s)
- Kristian F. Axelsson
- Department of Orthopaedic Surgery, Skaraborg Hospital, Skövde, Sweden
- Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Anna G. Nilsson
- Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
- Department of Endocrinology, Internal Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Hans Wedel
- Health Metrics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Dan Lundh
- School of Bioscience, University of Skövde, Skövde, Sweden
| | - Mattias Lorentzon
- Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
- Geriatric Medicine, Sahlgrenska University Hospital, Mölndal, Sweden
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7
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Maghbooli Z, Hossein-Nezhad A, Jafarpour M, Noursaadat S, Ramezani M, Hashemian R, Moattari S. Direct costs of osteoporosis-related hip fractures: protocol for a cross-sectional analysis of a national database. BMJ Open 2017; 7:e014898. [PMID: 28400460 PMCID: PMC5775462 DOI: 10.1136/bmjopen-2016-014898] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
INTRODUCTION It is estimated that Iran accounted for about 1% of hip fracture burden of the world in 2007, but these data are based on incomplete evidence. As the country's population is ageing, it is expected that a dramatic rise in hip fracture incidence will result. There is no single national study that accurately estimates the incidence of all hip fractures in the country or identifies the direct costs for affected patients. To help fill this gap, the current study has been designed to determine the incidence of hip fracture associated with osteoporosis in the Iranian population and to assess the direct costs involved. METHODS AND ANALYSIS This is a cross-sectional analysis of 2 years of hospital admissions due to hip fracture in Iran from October 2014 to October 2016 using an electronic health record called SEPAS. SEPAS is a nationwide health information system established by Information Technology (IT) and the Statistics Department of the Ministry of Health. SEPAS has recorded more than 8.5 million inpatient hospitalizations since October 2014. Our study will identify reported hip fracture data in SEPAS among admitted adult hospital patients aged ≥50 in Iran. International Classification of Diseases ICD-9 and 10 will be used as diagnostic codes. Study factors are demographic data, types of fracture, types of treatment, duration of admission, early complications, in-hospital mortality and direct cost of fracture treatment. The accuracy of the SEPAS fracture data will be ascertained through a pilot study that compares the SEPAS data with the data directly extracted from medical records of the Shariati Hospital in Tehran during the study period. ETHICS AND DISSEMINATION The study protocol was approved by the Ethics Committee of the National Institute for Medical Research Development of Iran. Dissemination plans include academic publications, conference presentations and social media.
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Affiliation(s)
- Zhila Maghbooli
- Endocrinology and Metabolism Research Institute of Tehran University of Medical Sciences, Tehran, Iran
| | - Arash Hossein-Nezhad
- Department of Medicine, Section of Endocrinology, Nutrition, and Diabetes, Vitamin D, Skin and Bone Research Laboratory, Boston University Medical Campus, Boston, Massachusetts, USA
| | - Maryam Jafarpour
- Statistics and Information Technology, Ministry of Health and Medical Education, Tehran, Iran
| | - Sima Noursaadat
- Statistics and Information Technology, Ministry of Health and Medical Education, Tehran, Iran
| | - Majid Ramezani
- Endocrinology and Metabolism Research Institute of Tehran University of Medical Sciences, Tehran, Iran
| | - Roxana Hashemian
- Boston University School of Dental Medicine, Boston, Massachusetts, USA
| | - Syamak Moattari
- Department of Health Sciences, Worcester State University, Worcester, Massachusetts, USA
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8
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Wallander M, Axelsson KF, Nilsson AG, Lundh D, Lorentzon M. Type 2 Diabetes and Risk of Hip Fractures and Non-Skeletal Fall Injuries in the Elderly: A Study From the Fractures and Fall Injuries in the Elderly Cohort (FRAILCO). J Bone Miner Res 2017; 32:449-460. [PMID: 27664946 DOI: 10.1002/jbmr.3002] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/21/2016] [Accepted: 09/22/2016] [Indexed: 01/26/2023]
Abstract
Questions remain about whether the increased risk of fractures in patients with type 2 diabetes (T2DM) is related mainly to increased risk of falling or to bone-specific properties. The primary aim of this study was to investigate the risk of hip fractures and non-skeletal fall injuries in older men and women with and without T2DM. We included 429,313 individuals (aged 80.8 ± 8.2 years [mean ± SD], 58% women) from the Swedish registry "Senior Alert" and linked the data to several nationwide registers. We identified 79,159 individuals with T2DM (45% with insulin [T2DM-I], 41% with oral antidiabetics [T2DM-O], and 14% with no antidiabetic treatment [T2DM-none]) and 343,603 individuals without diabetes. During a follow-up of approximately 670,000 person-years, we identified in total 36,132 fractures (15,572 hip fractures) and 20,019 non-skeletal fall injuries. In multivariable Cox regression models where the reference group was patients without diabetes and the outcome was hip fracture, T2DM-I was associated with increased risk (adjusted hazard ratio (HR) [95% CI] 1.24 [1.16-1.32]), T2DM-O with unaffected risk (1.03 [0.97-1.11]), and T2DM-none with reduced risk (0.88 [0.79-0.98]). Both the diagnosis of T2DM-I (1.22 [1.16-1.29]) and T2DM-O (1.12 [1.06-1.18]) but not T2DM-none (1.07 [0.98-1.16]) predicted non-skeletal fall injury. The same pattern was found regarding other fractures (any, upper arm, ankle, and major osteoporotic fracture) but not for wrist fracture. Subset analyses revealed that in men, the risk of hip fracture was only increased in those with T2DM-I, but in women, both the diagnosis of T2DM-O and T2DM-I were related to increased hip fracture risk. In conclusion, the risk of fractures differs substantially among patients with T2DM and an increased risk of hip fracture was primarily found in insulin-treated patients, whereas the risk of non-skeletal fall injury was consistently increased in T2DM with any diabetes medication. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Märit Wallander
- Department of Medicine Huddinge, Karolinska Institute, Stockholm, Sweden.,Geriatric Medicine, Center for Bone Research at the Sahlgrenska Academy, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Kristian F Axelsson
- Geriatric Medicine, Center for Bone Research at the Sahlgrenska Academy, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.,Department of Orthopaedic Surgery, Skaraborg Hospital, Skövde, Sweden
| | - Anna G Nilsson
- Geriatric Medicine, Center for Bone Research at the Sahlgrenska Academy, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Dan Lundh
- School of Bioscience, University of Skövde, Skövde, Sweden
| | - Mattias Lorentzon
- Geriatric Medicine, Center for Bone Research at the Sahlgrenska Academy, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
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9
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Helgeland J, Kristoffersen DT, Skyrud KD, Lindman AS. Variation between Hospitals with Regard to Diagnostic Practice, Coding Accuracy, and Case-Mix. A Retrospective Validation Study of Administrative Data versus Medical Records for Estimating 30-Day Mortality after Hip Fracture. PLoS One 2016; 11:e0156075. [PMID: 27203243 PMCID: PMC4874695 DOI: 10.1371/journal.pone.0156075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 05/09/2016] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The purpose of this study was to assess the validity of patient administrative data (PAS) for calculating 30-day mortality after hip fracture as a quality indicator, by a retrospective study of medical records. METHODS We used PAS data from all Norwegian hospitals (2005-2009), merged with vital status from the National Registry, to calculate 30-day case-mix adjusted mortality for each hospital (n = 51). We used stratified sampling to establish a representative sample of both hospitals and cases. The hospitals were stratified according to high, low and medium mortality of which 4, 3, and 5 hospitals were sampled, respectively. Within hospitals, cases were sampled stratified according to year of admission, age, length of stay, and vital 30-day status (alive/dead). The final study sample included 1043 cases from 11 hospitals. Clinical information was abstracted from the medical records. Diagnostic and clinical information from the medical records and PAS were used to define definite and probable hip fracture. We used logistic regression analysis in order to estimate systematic between-hospital variation in unmeasured confounding. Finally, to study the consequences of unmeasured confounding for identifying mortality outlier hospitals, a sensitivity analysis was performed. RESULTS The estimated overall positive predictive value was 95.9% for definite and 99.7% for definite or probable hip fracture, with no statistically significant differences between hospitals. The standard deviation of the additional, systematic hospital bias in mortality estimates was 0.044 on the logistic scale. The effect of unmeasured confounding on outlier detection was small to moderate, noticeable only for large hospital volumes. CONCLUSIONS This study showed that PAS data are adequate for identifying cases of hip fracture, and the effect of unmeasured case mix variation was small. In conclusion, PAS data are adequate for calculating 30-day mortality after hip-fracture as a quality indicator in Norway.
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Affiliation(s)
- Jon Helgeland
- Quality Measurement Unit, Norwegian Institute of Public Health, Oslo, Norway
| | | | - Katrine Damgaard Skyrud
- Department of Registration, Institute of Population-Based Cancer Research, Cancer Registry of Norway, Oslo, Norway
| | - Anja Schou Lindman
- Quality Measurement Unit, Norwegian Institute of Public Health, Oslo, Norway
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Vu T, Day L, Finch CF. The burden of hospitalised fall-related injury in community-dwelling older people in Victoria: a database study. Aust N Z J Public Health 2014; 38:128-33. [DOI: 10.1111/1753-6405.12156] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Revised: 08/01/2013] [Accepted: 09/01/2013] [Indexed: 11/29/2022] Open
Affiliation(s)
- Trang Vu
- Monash Injury Research Institute; Monash University; Victoria
| | - Lesley Day
- Monash Injury Research Institute; Monash University; Victoria
| | - Caroline F. Finch
- Monash Injury Research Institute; Monash University; Victoria
- Australian Centre for Research into Injury in Sport and its Prevention, Federation University Australia
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