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Table 2 Characteristics associated with tuberculosis infection status in child contacts of drug-susceptible tuberculosis and multidrug-resistant tuberculosis

From: The impact of drug resistance on the risk of tuberculosis infection and disease in child household contacts: a cross sectional study

 

Total

Infected N (%)

OR (95%CI)

AOR (95% CI)

Child factors

 Age < 2 years

203

64 (31.5%)

ref

ref

 Age ≥ 2 years

335

144 (43%)

1.64 (1.13, 2.36)

1.61 (1.09, 2.37)

 Female

259

96 (37.1%)

ref

ref

 Male

278

112 (40.3%)

1.15 (0.81, 1.62)

1.02 (0.70, 1.47)

 Mixed race / other ethnicity

390

161 (41.3%)

ref

ref

 Black African ethnicity

148

47 (31.8%)

0.66 (0.44, 0.99)

0.54 (0.33, 0.88)

 HIV-negative

518

202 (39%)

ref

ref

 HIV-positive

9

3 (33.3%)

0.78 (0.19, 3.16)

0.66 (0.15, 2.94)

 No BCG scar /no vaccination documented

45

16 (35.6%)

ref

ref

 BCG scar/vaccination documented

487

191 (39.2%)

1.17 (0.62, 2.21)

1.62 (0.80, 3.29)

 No prior tuberculosis treatment (disease)

509

189 (37.1%)

ref

ref

 Prior tuberculosis treatment (disease)

29

19 (65.5%)

3.22 (1.47, 7.06)

2.36 (1.03, 5.39)

 Weight for age (z-score) ≥ −2

482

186 (38.6%)

ref

ref

 Weight for age (z-score) < −2

54

21 (38.9%)

1.01 (0.57, 1.80)

1.04 (0.56, 1.92)

 Sleeps in different room to TB source case

348

132 (37.9%)

ref

ref

 Sleeps in same room as TB source case

113

40 (35.4%)

0.90 (0.58, 1.40)

0.85 (0.53, 1.36)

 Sleeps in same bed as TB source case

77

36 (46.8%)

1.44 (0.87, 2.36)

1.05 (0.60, 1.82)

Adult source case/household factors

 DS-TB source case

312

107 (34.3%)

ref

ref

 MDR-TB source case

226

101 (44.7%)

1.55 (1.09, 2.20)

2.05 (1.34, 3.12)

 No household tobacco smoke exposure

144

50 (34.7%)

ref

ref

 Household tobacco smoke exposure

394

158 (40.1%)

1.26 (0.85, 1.87)

1.22 (0.76, 1.94)

 Socioeconomic index ≥ 5/11

419

165 (39.4%)

ref

ref

 Socioeconomic index <5/11

119

43 (36.1%)

0.87 (0.57, 1.33)

0.79 (0.51, 1.25)

  1. MDR-TB Mycobacterium tuberculosis resistant to rifampicin and isoniazid (defined by line probe assay)
  2. DS-TB Mycobacterium tuberculosis susceptible to rifampicin and isoniazid (defined by line probe assay)