O steoporosis is a common condition throughout the developed world, affecting up to 16% of women and 7% of men aged 50 years and older. 1 The presence of underlying osteoporosis is a major risk factor for the development of fractures of the hip, proximal femur, spinal vertebra and forearm. In 2000, the estimated number of people with fractures worldwide was 56 million, and about 9 million new osteoporotic fractures occur each year.2 In 1993/94, the number of hip fractures in Canada was 23 375.3 This number is predicted to increase to 88 124 by the year 2041, with a parallel increase in the number of days in hospital (465 000 patientdays in 1993/94 to 1.8 million in 2041).3 Moreover, the casefatality rate for hip fractures can exceed 20%, 4 and all osteoporosis-related fractures can lead to substantial long-term disability and decreased quality of life. 5Many risk factors for the development of osteoporosis-related fracture have been identified, including white ethnic background, low body mass index, physical inactivity and female sex. [6][7][8] There are also a number of medication classes, including corticosteroids and serotonin selective reuptake inhibitors, whose use has been linked to higher rates of osteoporosis.9-11 Furthermore, any condition or drug that increases the risk of falls and injury also increases the risk of an osteoporosis-related fracture. 12,13One medication class that may affect bone mineral metabolism is proton pump inhibitors. This class of drugs inhibits the production and intragastric secretion of hydrochloric acid, which is believed to be an important mediator of calcium absorption in the small intestine.14 Recent studies have suggested that the use of proton pump inhibitors for 1 or more years is associated with hip fracture and other osteoporotic fractures; however, there is limited data on additional risk beyond 4 years exposure. 15,16 Because proton pump inhibitors are commonly prescribed to control and prevent symptoms of chronic unrelenting conditions, it is likely that many patients will use these medications for more than 4 years. Therefore, we used an adminstrative database to examine the effects of longer durations of proton pump inhibitor use on the development of osteoporosis-related fractures. Methods Data sourcesWe performed a retrospective, matched cohort study using the Population Health Research Data Repository, which contains comprehensive health care utilization data for nearly all CMAJ ResearchBackground: The use of proton pump inhibitors has been associated with an increased risk of hip fracture. We sought to further explore the relation between duration of exposure to proton pump inhibitors and osteoporosis-related fractures. Methods:We used administrative claims data to identify patients with a fracture of the hip, vertebra or wrist between April 1996 and March 2004. Cases were each matched with 3 controls based on age, sex and comorbidities. We calculated adjusted odds ratios (OR) for the risk of hip fracture and all osteoporosis-related fractures for durations...
This study provides novel insight into the relationship between fractures and psychotropic medications in the elderly. Selective serotonin reuptake inhibitors seem to have a greater risk than other psychotropic classes, and higher doses may further increase that risk. Lithium seems to be protective against fractures.
Fractures at typical osteoporotic sites are associated with increased mortality across all age groups, particularly in men. Better understanding of factors associated with increased post-fracture mortality should inform the development of management strategies.
The high concordance between prescription claims database and pill counts suggested that the rate with which patients refill their medications usually is consistent with the rate they consume them. DPIN is not accurate for nondiscrete dosage forms or medications prescribed for "as-required" use.
BackgroundPopulation-based administrative data have been used to study osteoporosis-related fracture risk factors and outcomes, but there has been limited research about the validity of these data for ascertaining fracture cases. The objectives of this study were to: (a) compare fracture incidence estimates from administrative data with estimates from population-based clinically-validated data, and (b) test for differences in incidence estimates from multiple administrative data case definitions.MethodsThirty-five case definitions for incident fractures of the hip, wrist, humerus, and clinical vertebrae were constructed using diagnosis codes in hospital data and diagnosis and service codes in physician billing data from Manitoba, Canada. Clinically-validated fractures were identified from the Canadian Multicentre Osteoporosis Study (CaMos). Generalized linear models were used to test for differences in incidence estimates.ResultsFor hip fracture, sex-specific differences were observed in the magnitude of under- and over-ascertainment of administrative data case definitions when compared with CaMos data. The length of the fracture-free period to ascertain incident cases had a variable effect on over-ascertainment across fracture sites, as did the use of imaging, fixation, or repair service codes. Case definitions based on hospital data resulted in under-ascertainment of incident clinical vertebral fractures. There were no significant differences in trend estimates for wrist, humerus, and clinical vertebral case definitions.ConclusionsThe validity of administrative data for estimating fracture incidence depends on the site and features of the case definition.
O steoporosis is a common condition throughout the developed world, affecting up to 16% of women and 7% of men aged 50 years and older. 1 The presence of underlying osteoporosis is a major risk factor for the development of fractures of the hip, proximal femur, spinal vertebra and forearm. In 2000, the estimated number of people with fractures worldwide was 56 million, and about 9 million new osteoporotic fractures occur each year.2 In 1993/94, the number of hip fractures in Canada was 23 375.3 This number is predicted to increase to 88 124 by the year 2041, with a parallel increase in the number of days in hospital (465 000 patientdays in 1993/94 to 1.8 million in 2041).3 Moreover, the casefatality rate for hip fractures can exceed 20%, 4 and all osteoporosis-related fractures can lead to substantial long-term disability and decreased quality of life. 5Many risk factors for the development of osteoporosis-related fracture have been identified, including white ethnic background, low body mass index, physical inactivity and female sex. [6][7][8] There are also a number of medication classes, including corticosteroids and serotonin selective reuptake inhibitors, whose use has been linked to higher rates of osteoporosis.9-11 Furthermore, any condition or drug that increases the risk of falls and injury also increases the risk of an osteoporosis-related fracture. 12,13One medication class that may affect bone mineral metabolism is proton pump inhibitors. This class of drugs inhibits the production and intragastric secretion of hydrochloric acid, which is believed to be an important mediator of calcium absorption in the small intestine.14 Recent studies have suggested that the use of proton pump inhibitors for 1 or more years is associated with hip fracture and other osteoporotic fractures; however, there is limited data on additional risk beyond 4 years exposure. 15,16 Because proton pump inhibitors are commonly prescribed to control and prevent symptoms of chronic unrelenting conditions, it is likely that many patients will use these medications for more than 4 years. Therefore, we used an adminstrative database to examine the effects of longer durations of proton pump inhibitor use on the development of osteoporosis-related fractures. Methods Data sourcesWe performed a retrospective, matched cohort study using the Population Health Research Data Repository, which contains comprehensive health care utilization data for nearly all CMAJ ResearchBackground: The use of proton pump inhibitors has been associated with an increased risk of hip fracture. We sought to further explore the relation between duration of exposure to proton pump inhibitors and osteoporosis-related fractures. Methods:We used administrative claims data to identify patients with a fracture of the hip, vertebra or wrist between April 1996 and March 2004. Cases were each matched with 3 controls based on age, sex and comorbidities. We calculated adjusted odds ratios (OR) for the risk of hip fracture and all osteoporosis-related fractures for durations...
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