Table 4 Factors associated with contacts being GeneXpert-diagnosed TB infected
CRR (95% CI) | P-value | ARR (95% CI)# | P-value | |
|---|---|---|---|---|
Contact type | ||||
Household | Reference | |||
Social | 0.24 (0.03–2.08) | 0.19 | ||
Age in years | 0.99 (0.87–1.12) | 0.84 | 1.02 (0.87–1.19) | 0.84 |
Gender | ||||
Male | Reference | 0.61 | Reference | 0.66 |
Female | 1.60 (0.26–9.87) | 1.50 (0.25–9.02) | ||
Time spent with index case | ||||
All time | Reference | |||
Night only | 0.35 (0.03–3.49) | 0.37 | ||
Day only | 0.23 (0.02–2.34) | 0.21 | ||
Share a bed with index case | ||||
No | Reference | 0.006 | Reference | 0.008 |
Yes | 20.0 (2.33–171.8) | 22.2 (2.45–202) | ||
Sleep in same room with index case | ||||
No | Reference | 0.07 | ||
Yes | 7.62 (0.83–68.90) | |||
Clinical signs | ||||
Coughing ≥ 2 weeks | – | |||
Fever | 6.40 (0.72–57.3) | 0.09 | 8.15 (0.86–76.8) | 0.06 |
Had weight loss | 0.84 (0.14–5.03) | 0.85 | ||
Drenching night sweats | – | |||
Swelling at neck/armpits/groin | 1.19 (0.13–10.7) | 0.87 | ||
Underlying medical conditions | – | |||
HIV positive | – | |||
Model performance and goodness of fit | ||||
AUC (95% CI) | 0.87 (0.72–0.98) | |||
Hosmer–Lemeshow test | 4.59 | 0.80 | ||