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Table 1 TB infection prevalence, exposure to adult TB case on residential plot and association between TB infection and residential TB case exposure by age categories

From: Decreasing household contribution to TB transmission with age: a retrospective geographic analysis of young people in a South African township

Age category

 

TST positive

Exposed to TB on plot

Odds of TB infection in those exposed to adult TB on plot

Odds of TB infection in those exposed to smear positive PTB on plot

 

n

n (%)

n (%)

OR* (95% CI)

OR* (95% CI)

5-9

258

74

29%

144

56%

2.0

(1.1-3.6)

2.0

(1.1-3.5)

10-14

370

151

41%

209

46%

1.5

(1.0-2.3)

2.4

(1.5-3.6)

≥15

472

255

54%

298

63%

1.4

(0.9-2.0)

1.4

(0.9-2.0)

Total

1,100

480

44%

651

59%

1.6

(1.2-2.0)

1.9

(1.4-2.4)

  1. *Odds ratios adjusted for gender of the child/adolescent.