. Author manuscript; available in PMC: 2022 Oct 12.

Published in final edited form as: Trop Med Int Health. 2020 Apr 6;25(6):695–701. doi: 10.1111/tmi.13392

Table 4.

Prevalence ratios of positive tuberculin skin test results among tested contacts of index patients with bacteriologically confirmed TB compared to tested contacts of index patients with non-bacteriologically confirmed TB, by age of contact

	Positive TST results, n/N (%)
Age group of contacts	Contacts of index patients with bacteriologically confirmed TB	Contacts of index patients with non-bacteriologically confirmed TB	Prevalence ratio^† (95% CI)	Adjusted prevalence ratio^†(95% CI)
0–4	83/211 (39.3)	8/34 (23.5)	1.80 (0.87–3.70)	1.88 (0.84–3.73)
5–14	136/282 (48.2)	25/61 (41.0)	1.16 (0.81–1.68)	1.14 (0.80–1.62)
15–34	141/244 (57.8)	20/44 (45.5)	1.20 (0.87–1.65)	1.18 (0.87–1.61)
35+	84/135 (62.2)	13/22 (59.1)	1.08 (0.73–1.59)	1.08 (0.73–1.59)
All ages	444/872 (50.9)	66/161 (41.0)	1.16 (0.92–1.48)	1.17 (0.92–1.49)

^†

Prevalence ratios and confidence intervals account for household clustering. Adjusted prevalence ratios are adjusted for contact sex, contact HIV status and rural vs. urban residence