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Table 3 Factors associated with likelihood for new TB diagnosis among household contacts

From: Yield of systematic household contact investigation for tuberculosis in a high-burden metropolitan district of South Africa

Variable

Diagnosed with TB

(n = 17)

n (%)

Unadjusted OR (95% CI)

Adjusted OR (95% CI)

Sex

 Female (ref)

5 (29.4)

1

1

 Male

12 (70.6)

3.9 (1.31–11.37)

4.8 (1.54–14.97)

 Age (median; IQR)

18 (7–43)

1.0 (0.97–1.02)

1.0 (0.97–1.01)

Number of household contacts from same household (median; IQR)

4 (2–5)

1.0 (0.76–1.31)

1.0 (0.76–1.32)

Whether index case is coughing

 No (ref)

5 (29.4)

1

1

 Yes

12 (70.6)

2.2 (0.74–6.36)

2.8 (0.84–9.05)

Index case HIV status

 Negative (ref)

10 (58.8)

1

1

 Positive

7 (41.2)

0.5 (0.18–1.32)

0.6 (0.19–1.60)

Whether contact shares bedroom with index case

 No (ref)

8 (47.1)

1

1

 Yes

9 (52.9)

2.2 (0.81–6.10)

2.3 (0.78–6.55)

Whether household contact is coughing

 No (ref)

13 (76.5)

1

1

 Yes

4 (23.5)

2.9 (0.88–9.73)

4.3 (1.11–16.43)

  1. Ref reference, IQR interquartile range, CI confidence interval