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. 2014 Aug 19;17(1):19053. doi: 10.7448/IAS.17.1.19053

Table 1.

Patient characteristics at first-line ART failure

Total (%) No multi-NRTI mutations (%) Multi-NRTI mutations (%)

n=105 (100) n=66 (63) n=39 (37)
Age at genotyping (years)
 Median (IQR) 36 (32–41) 35 (32–40) 37 (33–42)
 ≤30 19 (18) 13 (20) 6 (15)
 31–40 59 (56) 38 (58) 21 (54)
 41+ 27 (26) 15 (23) 12 (31)
Sex
 Male 69 (66) 43 (65) 26 (67)
 Female 36 (34) 23 (35) 13 (33)
Mode of exposure
 Heterosexual contact 76 (72) 47 (71) 29 (74)
 Homosexual contact 19 (18) 15 (23) 4 (10)
 Other/unknown 10 (10) 4 (6) 6 (15)
VL at genotyping (copies/ml)
 Median Log10 VL (IQR) 4.14 (3.65–4.94) 4.02 (3.55–4.91) 4.52 (3.95–5.00)
 ≤10,000 44 (42) 33 (50) 11 (28)
 10,001–100,000 38 (36) 20 (30) 18 (46)
 >100,000 23 (22) 13 (20) 10 (26)
CD4 at genotyping (cells/µL)
 Median (IQR) 172 (75–278.5) 206.5 (121–300.5) 83.5 (16.5–194.5)
 ≤200 58 (55) 30 (45) 28 (72)
 >200 38 (36) 30 (45) 8 (21)
Missing 9 (9) 6 (9) 3 (8)
Years since ART initiation
 Median (IQR) 2.17 (1.07–3.91) 1.56 (0.81–3.58) 2.88 (2.09–4.29)
 ≤2 49 (47) 40 (61) 9 (23)
 >2 56 (53) 26 (39) 30 (77)
Failing ART
 NRTI+NNRTI 99 (94) 62 (94) 37 (95)
 NRTI+PI 6 (6) 4 (6) 2 (5)
Failing NRTI
 3TC+d4T 46 (44) 27 (41) 19 (49)
 3TC+AZT 33 (31) 17 (26) 16 (41)
 Other 26 (25) 22 (33) 4 (10)
Previous AIDS
 No 46 (44) 36 (55) 10 (26)
 Yes 59 (56) 30 (45) 29 (74)
Subtype
 B 17 (16) 9 (14) 8 (21)
 Non-B 88 (84) 57 (86) 31 (79)