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Table 1 Baseline characteristics of kidney transplant recipients classified by presence of at least one bone mineral density test in the 3 years after transplantationa

From: Frequency of bone mineral density testing in adult kidney transplant recipients from Ontario, Canada: a population-based cohort study

  Bone mineral density test  
Characteristic Yes No P value
(n = 2786) (n = 2035)
Age, years 50 (39–59) 49 (38-59) 0.04
Women 1182 (42 .4 %) 599 (29.4 %) <0.001
Transplant era    <0.001
 1994–1997 290 (10.4 %) 624 (30.7 %)  
 1998–2001 631 (22.6 %) 480 (23.6 %)  
 2002–2005 769 (27.6 %) 413 (20.3 %)  
 2006–2009 1096 (39.3 %) 518 (25.5 %)  
Diabetes 690 (24.8 %) 565 (27.8 %) 0.02
Previous non-vertebral fracture 68 (2.4 %) 41 (2.0 %) 0.33
Charlson comorbidity indexb 2.6 ± 1.0 2.7 ± 1.2 0.002
  1. Data are median (interquartile range), mean (± SD) or numbers (percent)
  2. Abbreviation: SD standard deviation
  3. aAge and transplant era were assessed at the time of transplant (index date). Diabetes and Charlson comorbidity index were assessed in the 3 years prior to the transplant date. Prior non-vertebral fracture was defined as a composite of proximal humerus, forearm, hip fractures from 1991 to transplant date (index date)
  4. bAll recipients with a Charlson comorbidity index (CCI) of 0 were given a score of 2 and those with a score of 1 were given a score of 3; one of the variables in the CCI is presence of end-stage renal disease which automatically results in recipients receiving a score of 2