Table 2

 Independent predictors of tuberculin positivity at different cut-off points

Cut-off pointPredictorsExp(B)95% CIp valueGoodness of fit*
*Hosmer-Lemeshow goodness of fit.
⩾5 mmFemale sex1.3881.303 to 1.478<0.0010.476
Age1.1481.117 to 1.181<0.001
⩾10 mmFemale sex1.4031.292 to 1.524<0.0010.895
Age1.1691.127 to 1.212<0.001
⩾15 mmFemale sex1.2051.001 to 1.4510.0490.152
Age1.1761.084 to 1.277<0.001