Skip to main content

Table 1 Table showing differences in characteristics between converters and non-converters

From: QuantiFERON conversion following tuberculin administration is common in HIV infection and relates to baseline response

Variable Overall population
n = 22
Converters
n = 9
Non-converters
n = 13
p-value
Age (years) – Med(IQR) 33(29–40) 32(29–40) 36 (30–39) 0.52
Sex - Female 90.9 % 100 % 84.6 % 0.49
CD4 count (/mm3) – Med(IQR) 477 (439 – 621) 466 (426–720) 477 (458–589) 0.87
On ART 73 % 66.6 % 76.9 % 0.66
Previous TB treatment 31.8 % 23.1 % 44.4 % 0.37
Time between tests (days) – Med(IQR) 62 (49–70) 50 (46–62) 69 (58–71) 0.11
Baseline TBAg-Nil (IU/ml) – Med (IQR) 0.07 (0.01–0.21) 0.21 (0.17–0.26) 0.02 (0.01–0.07) 0.002
Change in TBAg-Nil (IU/ml) – Med(IQR) 0.09 (−0.05–0.62) 0.82 (0.39–1.28) 0.03 (−0.05–0.06) 0.0001
  1. Characteristics of 9 converters and 13 non-converters compared. Gaussian distribution of data determined by Shapiro-Wilk test. Non-parametric data compared using Mann-Whitney U test and parametric data compared using t-test. Proportions were compared by χ2 test or Fisher’s exact test (if the contingency included a number ≤ 5)
  2. Med Median, IQR Interquartile range, ART Antiretroviral therapy, IU international units