Variable

Frequency n = 10887 (100%)

Undetectable

N = 2708 (24.9%)

<40 cp/mL

3197 (29.4%)

41 - 500 cp/mL

1922 (17.6%)

501 - 1000 cp/mL 363 (3.3%)

>1000 cp/mL

2697 (24.8%)

p-value

Ages

0 - 9 yrs

311 (2.9)

54 (17.4)

54 (17.4)

38 (12.2)

8 (2.6)

157 (50.5)

<0.001

11 - 18 yrs

386 (3.5)

73 (18.9)

54 (14.0)

42 (10.9)

16 (4.1)

201 (52.1)

19 - 25 yrs

797 (7.3)

198 (24.8)

181 (22.7)

168 (21.1)

23 (2.9)

227 (28.5)

26 - 45 yrs

7098 (65.2)

1810 (25.5)

2114 (29.8)

1256 (17.7)

248 (3.5)

1670 (23.5)

46 - 55 yrs

1583 (14.5)

400 (25.3)

550 (34.7)

274 (17.3)

44 (2.8)

315 (19.9)

56 - 65 yrs

562 (5.2)

137 (24.4)

188 (33.5)

117 (20.8)

20 (3.5)

100 (17.8)

>65 yrs

150 (1.3)

36 (24.0)

56 (37.3)

27 (18.0)

4 (2.7)

27 (18.0)

Sex

Males

3094 (28.4)

702 (22.7)

912 (29.5)

560 (18.1)

99 (3.2)

821 (26.5)

0.007

Females

7793 (71.6)

2006 (25.7)

2285 (29.3)

1362 (17.5)

264 (3.4)

1876 (24.1)

ART Regimen

AZT + 3TC + NVP

5855 (53.8)

1473 (25.2)

1677 (28.6)

929 (15.9)

205 (3.5)

1571 (26.8)

<0.001

TDF + 3TC + EFV

4864 (44.7)

1196 (24.6)

1479 (30.4)

956 (19.7)

152 (3.1)

1081 (22.2)

TDF + FTC + EFV

114 (1.0)

28 (24.6)

24 (21.1)

29 (25.4)

3 (2.6)

30 (26.3)

AZT + 3TC + LPV/r

54 (0.5)

11 (20.4)

17 (31.5)

8 (14.8)

3 (5.6)

15 (27.8)

ART Type

1st line

10568 (97.1)

2667 (25.2)

3113 (29.4)

1848 (17.5)

348 (3.3)

2592 (24.5)

0.942

2nd line

282 (2.6)

28 (9.9)

82 (29.0)

67 (23.8)

14 (5.0)

91 (32.3)

3rd line

37 (0.3)

13 (35.1)

2 (5.4)

7 (19.0)

1 (2.7)

14 (37.8)

Duration on ART

1 yr

811 (7.4)

180 (22.2)

221 (27.3)

146 (18.0)

35 (4.3)

229 (28.2)

<0.001

1 - 5 yrs

5275 (48.5)

1345 (25.5)

1484 (28.1)

1023 (19.4)

180 (3.4)

1243 (23.6)

6 - 10 yrs

4075 (37.4)

1042 (25.6)

1185 (29.1)

644 (15.8)

132 (3.2)

1072 (26.3)

>10 yrs

726 (6.7)

141 (19.4)

307 (42.3)

109 (15.0)

16 (2.2)

153 (21.1)

CD4 count

<350

3371 (31.0)

633 (18.8)

812 (24.1)

605 (17.9)

94 (2.8)

1227 (36.4)

<0.001

350 - 499

2466 (22.7)

631 (25.6)

765 (31.0)

473 (19.2)

82 (3.3)

515 (20.9)

500 - 999

4240 (39.0)

1197 (28.2)

1366 (32.2)

722 (17.0)

158 (3.7)

797 (18.8)

1000 - 1500

662 (6.0)

208 (31.4)

213 (32.2)

106 (16.9)

21 (3.2)

114 (17.2)

>1500

148 (1.3)

39 (26.4)

41 (27.7)

16 (10.8)

8 (5.4)

44 (29.7)

Reason for request of viral load

Routine

10479 (96.3)

2604 (24.8)

3091 (29.5)

1847 (17.6)

351 (3.3)

2586 (24.7)

Suspected clinical failure

258 (2.4)

71 (27.5)

76 (29.5)

53 (20.5)

8 (3.1)

50 (19.4)

<0.001

Suspected immunological failure

150 (1.4)

33 (22.0)

30 (20.0)

22 (14.6)

4 (2.7)

61 (40.7)

ART START YEAR

2000-2004

92 (0.8)

23 (25.0)

38 (41.3)

18 (19.6)

1 (1.1)

12 (13.0)

0.076

2005-2009

2945 (27.1)

750 (25.5)

945 (32.1)

433 (14.7)

82 (2.8)

735 (24.9)

2010-2014

5172 (47.5)

1309 (25.3)

1454 (28.1)

941 (18.2)

185 (3.6)

1283 (24.8)

2015-2018

2678 (24.6)

626 (23.4)

760 (28.4)

530 (19.7)

95 (3.5)

667 (24.9)