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Table 4 Ordinal regression analysis of PTST- vs TSTC and TSTC vs TST+

From: Clinical and epidemiological characteristics of individuals resistant to M. tuberculosis infection in a longitudinal TB household contact study in Kampala, Uganda

  Univariate model Multivariable model
Predictor OR 95% CI P OR 95% CI P
Intercept 1 — —   0.146 (0.090, 0.24)  
Intercept 2 — —   0.400 (0.25, 0.65)  
Age 2–5 vs 0-2 1.43 (0.88, 2.32) 0.15 1.34 (0.82, 2.20) 0.24
Age 5–15 vs. 0-2 1.24 (0.82, 1.89) 0.31 1.04 (0.68, 1.60) 0.85
Age 15+ vs 0-2 0.553 (0.37, 0.84) < 0.01 0.431 (0.28, 0.66) < 0.01
No. of Windows 1.145 (1.09, 1.21) < 0.01 1.097 (1.02, 1.18) < 0.01
Sleep in Same Room 0.559 (0.43, 0.72) < 0.01 0.66 (0.48, 0.89) < 0.01
People in Home 1.070 (1.04, 1.10) < 0.01 1.033 (1.00, 1.07) < 0.01
  1. PTST- = Persistently negative tuberculin skin test; TSTC = Tuberculin skin test converter; TST + = tuberculin skin test positive at baseline; CI = confidence interval. Univariate model results show results for each variable one at a time, while the multivariable model includes all variables. Model parameterized as logit(Pr(y ≤ j)) = α + β x for j = 1 (PTST-), 2 (TSTC). Each OR shows the odds or PTST vs TSTC and also TSTC vs TST + .
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