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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 (%)