Table 5. Multivariable analysis of time to TB episode (all TB cases and definite TB cases only); unadjusted and adjusted hazard ratios, 95% CI and P-values, separately for TST and EC responses.

Variable		n	Unadjusted HR	Adjusted HR1(95% CI)	P-value
All TB cases (n = 52)
TST response (mm)	<10≥ 10	2458	12.37	11.55 (0.74–3.24)	0.23
TST response (mm)	<55–910–14≥ 15	2458	12.181.404.92	11.27 (0.34–4.82)0.73 (0.21–2.56)2.56 (0.88–7.41)	0.005
EC response(SFC/million PBMC)	<32≥ 32	951	12.13	11.98 (0.77–5.08)	0.14
Definite TB cases (n = 40)
TST response (mm)	<10≥ 10	2458	12.73	11.73 (0.71–4.23)	0.20
TST response (mm)	<55–910–14≥ 15	2458	11.731.065.31	10.94 (0.19–4.72)0.52 (0.11–2.36)2.58 (0.76–8.74)	0.003
EC response(SFC/million PBMC)	<32≥ 32	951	13.77	13.61 (1.03–12.65)	0.02

¹adjusted for sex, age group, proximity to index case.

HR = hazard ratio; CI = confidence interval.