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Table 1 Demographic and clinical characteristics of the 89 children with a genotype

From: Drug resistance in children at virological failure in a rural KwaZulu-Natal, South Africa, cohort

Characteristic

Outcome

Gender, male, n (%)

53 (59.6)

At ART initiation

Age, years, median (IQR)

7 (3.7-9.6)

Number of children per age group n(%)

 

0-3 years

17 (23)

4-9 years

37 (50)

10-15 years

20 (27)

Viral load, log10 copies/ml, median (IQR)

4.0 (3.7-4.7)

CD4+ cell count, cells/μl, median (IQR)

286 (112–560)

By Age category:

 

0 - 2 yrs (n = 3)

817 (31–1564)

>2 – 5 yrs (n = 29)

469 (194–619)

>5 yrs (n = 38)

200 (69–363)

ART regimen, n (%)

 

d4T/3TC/EFV

64 (71.9)

d4T/3TC/LPVr

12 (13.5)

ABC/3TC/EFV

8 (8.9)

ABC/3TC/LPVr

4 (4.5)

AZT/3TC/EFV

1 (1.1)

At genotyping

Age, years, median (IQR)

10.2 (7.7 – 12.9)

Number of children per age group n(%)

 

0-3 years

4 (4.5)

4-9 years

38 (42.7)

10-15 years

47 (52.8)

Viral load prior to genotyping*, log10 copies/ml, median (IQR)

4.2 (3.8-4.8)

CD4+ cell count prior to genotyping*, cells/μl,

460 (228–769)

median (IQR)

 

By Age category:

2339 (1621–2538)

0 - 2 yrs (n = 4 )

685 (442–956)

2 – 5 yrs (n = 37)

295 (147–564)

>5 yrs (n = 47)

 

ART regimen at time of genotyping, n (%)

 

d4T/3TC/EFV

58 (65.2)

d4T/3TC/LPVr

8 (8.9)

ABC/3TC/EFV

14 (15.7)

ABC/3TC/LPVr

8 (8.9)

AZT/3TC/EFV

1 (1.1)

Duration of ART, years, median (IQR)

3.3 (2.5-4.4)

Duration of ART failure, years, median (IQR)

1.8 (0.8-2.4)

Time between last viral load and genotype, months, median (IQR)

3.1 (1.4-7.0)

History of ART substitution#, yes, n (%)

12 (13.5)

  1. Key:
  2. d4T, stavudine; 3TC, lamivudine; EFV, efavirenz; LPVr, lopinavir/ritonavir; ABC, abacavir; AZT, zidovudine; ART, antiretroviral therapy; IQR, interquartile range.
  3. *Last measurements recorded prior to date of genotype.
  4. Duration of antiretroviral failure was estimated from the date of the first viral load >1000 copies/ml to date of genotype, unless there was a viral load <50 copies/ml in-between, in which case the time was estimated from the next viral load >1,000 copies/ml. If there was no viral load ≤1,000 copies/ml then time was calculated from date of ART initiation.
  5. #Substitutions included changes of single drugs due to toxicity or guideline changes.