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Table 1 Characteristics of included and excluded participants due to availability of electronic data

From: Factors associated with the frequency of monitoring of liver enzymes, renal function and lipid laboratory markers among individuals initiating combination antiretroviral therapy: a cohort study

Characteristics Cohort (n = 7718) Included (n = 3940) Excluded (n = 3778)
Province    
  British Columbia 3588 (46 %) 787 (20 %) 2801 (74 %)
  Ontario 2394 (31 %) 1715 (44 %) 679 (18 %)
  Quebec 1736 (22 %) 1438 (36 %) 298 (8 %)
Age 40 (34-47) 39 (33-46) 41 (34-48)
Male 6208 (81 %) 3255 (83 %) 2953 (78 %)
Race    
  Caucasian 2046 (27 %) 1040 (26 %) 1006 (27 %)
  Black 512 (7 %) 373 (9 %) 139 (4 %)
  Aboriginal 484 (6 %) 117 (3 %) 367 (10 %)
  Other 448 (6 %) 285 (7 %) 163 (4 %)
  Unknown 4228 (55 %) 2125 (54 %) 2103 (56 %)
HIV Risk factor    
  Men having sex with men 2758 (49 %) 1877 (58 %) 881 (37 %)
  Injection drug use 1766 (31 %) 555 (17 %) 1211 (51 %)
  From Endemic Country 684 (12 %) 553 (17 %) 131 (6 %)
  Unknown 2100 (27 %) 680 (17 %) 1420 (38 %)
Year of cART initiation    
  2000 546 (7 %) 271 (7 %) 275 (7 %)
  2001-2005 2980 (39 %) 1723 (44 %) 1257 (33 %)
  >2005 4192 (54 %) 1946 (49 %) 2246 (59 %)
Baseline cART Regimen    
  NNRTI-based 3562 (46 %) 1727 (44 %) 1835 (49 %)
  Boosted PI-based 3091 (40 %) 1506 (38 %) 1585 (42 %)
  Other PI-based 928 (12 %) 611 (16 %) 317 (8 %)
  Other 137 (2 %) 96 (2 %) 41 (1 %)
Year of HIV+ Test 2003 (2000-2006) 2003 (2000-2006) 2002 (1998-2005)
Hepatitis C positive 1922 (27 %) 663 (18 %) 1259 (37 %)
Hepatitis B positive 386 (10 %) 304 (11 %) 82 (9 %)
Baseline CD4 (cells/mm3) 210 (110-300) 210 (112-297) 210 (110-310)
  >500 cells/mm3 431 (6 %) 164 (4 %) 267 (7 %)
  350-500 cells/mm3 970 (13 %) 483 (12 %) 487 (13 %)
  200-350 cells/mm3 2745 (36 %) 1444 (37 %) 1301 (34 %)
  <200 cells/mm3 3572 (46 %) 1849 (47 %) 1723 (46 %)
Baseline Viral Load (log10 copies/mL) 4.9 (4.3-5.1) 4.9 (4.4-5.2) 4.8 (4.2-5.0)
  1. Results are presented as median (interquartile range) or N (%)