Logistic regression of dichotomous measures of Mycobacterium tuberculosis infection in relation to exposure and age in adults and children in recent household contact with a tuberculosis index case
| Covariates | Measures of M tuberculosis infection | |||||
| TST positive | T SPOT.TB positive | QTF positive | ||||
| Unadjusted | Age adjusted | Unadjusted | Age adjusted | Unadjusted | Age adjusted | |
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| M tuberculosis contact score ⩾4 | 1.56 (0.59 to 4.15) | 3.83 (1.05 to 14.03) | 62.42 (7.67 to 508.69) | 38.40 (7.59 to 616.11) | 9.60 (3.02 to 30.54) | 14.94 (4.02 to 55.58) |
| Age in years | – | 1.07 (1.02 to 1.11) | – | 1.01 (0.96 to 1.06) | – | 1.04 (1.01 to 1.08) |
CI, confidence interval; OR, odds ratio; QTF, Quantiferon-Gold; TST, tuberculin skin test (positive: ⩾10 mm).