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Table 1 Study descriptive characteristics

From: Predictors of failure on second-line antiretroviral therapy with protease inhibitor mutations in Uganda

Characteristic

Controls

Cases

Total

p-value

n (col %)

n (col %)

n (col %)

Gender

Female

151(59.2)

28(32.9)

179(52.6)

 < 0.001

Male

104(40.8)

57(67.1)

161(47.4)

 

Total

255(100)

85(100)

340(100)

 

Type of second-line drug

lopinavir

241(94.5)

71(83.5)

312(91.8)

0.001

Atazanavir

8(3.1)

4(4.7)

12(3.5)

 

Other PIµ

6(2.4)

10(11.8)

16(4.7)

 

Total

255(100)

85(100)

340(100)

 

TB treatment§

No

246(97.2)

71(83.5)

317(93.8)

 < 0.001

YES

7(2.8)

14(16.5)

21(6.2)

 

Total

253(100)

85(100)

338(100)

 

Year of ART initiation

Before 2001

7(2.7)

23(27.1)

30(8.8)

 < 0.001

2001–2005

170(66.7)

41(48.2)

211(62.1)

 

2006–2010

64(25.1)

19(22.4)

83(24.4)

 

2011–2015

14(5.5)

2(2.4)

16(4.7)

 

Total

255(100)

85(100)

340(100)

 

Type of first-line drug

NNRTI based

217(85.1)

66(77.6)

283(83.2)

0.111

NON-NNRTI

38(14.9)

19(22.4)

57(16.8)

 

Total

255(100)

85(100)

340(100)

 

Other comorbidities §

No

226(89.3)

76(89.4)

302(89.3)

0.983

Yes

27(10.7)

9(10.6)

36(10.7)

 

Total

253(100)

85(100)

338(100)

 

Age at start of 2nd line: median (IQR)

 

38(32–46)

38(31–46)

38(32–46)

0.300

CD4 at start of 2nd line: median (IQR)

 

130(62–250)

68.5(18–181)

115(41–234)

0.079

VL at start of 2nd line: median (IQR)¥

 

43,005.5(13,645.5–135,553.5)

233,700(65,985.5–601,989)

67,965(18,846.5–189,160)

 < 0.001

Duration on 1st line: median (IQR)

 

4 (2 – 5)

3 (2–6)

3 (2–5)

0.210

  1. §Missing data on two observations, ¥ Missing data on 128 observations, TB: Tuberculosis, VL: Viral Load, IQR: Interquartile Range, ∞Non-NRTI: triple nucleosides, µ “other PI”: saquinavir and nelfinavir