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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