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Table 1 Characteristics of Study Sample

From: Validation of a case definition for depression in administrative data against primary chart data as a reference standard

  Year Region Province Total
2001 2004 Urban Rural AB BC
Number of patients 1482 1880 2372 990 1565 1797 3362
Age (mean ± SD) 53.2 ± 12.5 52.4 ± 12.8 52.2 ± 12.6 54.2 ± 12.7 52.3 ± 12.9 53.2 ± 12.5 52.8 ± 12.7
Sex (n, %)
 Male 506 (34.3) 711 (37.8) 796 (33.6) 424 (42.8) 641 (34.6) 679 (37.8) 1220 (36.3)
 Female 973 (65.7) 1169 (62.2) 1576 (66.4) 566 (57.2) 1024 (65.4) 1118 (62.2) 2142 (63.7)
Comorbid Conditions (n, %)a
 Yes 523(35.29) 839(44.63) 962(40.56) 400(40.40) 614(39.23) 748(41.62) 1362(40.5)
Depression (n, %)
 Yes 236(15.92) 352(18.72) 402(16.95) 186(18.79) 301(19.23) 287(15.97) 588(17.49)
  1. aComorbidity includes stroke, dementia, diabetes mellitus, dyslipidemia, coronary artery disease, peripheral vascular disease, congestive heart failure, chronic pulmonary disease, asthma, cancer, hypertension, chronic kidney disease, and dialysis