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. 2020 Oct 15;15(10):e0240594. doi: 10.1371/journal.pone.0240594

Table 1. Comparison of screening for tuberculosis in household contacts of pulmonary TB (PTB) patients pre and post ‘Household contact card’ implementation.

Household contact screening Pre-implementation phase Post-Implementation phase p-value^
(January to March, 2018) (June to August, 2018)
Index PTB patients started on treatment (n) 1236 1364
Index PTB patients with documentation of household contacts 1023 (83%) 1268 (93%) <0.001
(95%CI: 81, 85) (95%CI: 92, 94)
Household contacts identified (n) 2773 2687
Contacts screened 1001 (36%) 2150 (80%) <0.001
(95%CI: 34, 38) (95%CI: 78, 81)
Contacts diagnosed with TB 40 (4%) 21 (1%) <0.001
(95%CI: 3, 5) (95%CI: 0.6, 1.5)
Contacts started anti-TB treatment 14 (35%) 21 (100%) <0.001
(95%CI: 21, 52) (95%CI: 84, 100)
Contacts aged <6 years of smear-positive Index PTB patients (n) 202 138
Contacts <6 years started on Isoniazid preventive therapy 69 (34%) 81 (59%) <0.001
(95%CI: 28, 41) (95%CI: 50, 67)

^Chi-square test.

95% CI: 95% Confidence Interval.