Positive laboratory test result for tuberculosis, irrespective of notification.

<p>Overall notification rates: number of notified cases divided by population size, multiplied by 100,000. Cluster-averaged rates: mean of cluster-specific notification rates.</p>a<p>Laboratory-specific rate of positive smear examinations in the first study month, per 100,000 population per year.</p><p>Positive laboratory test result for tuberculosis, irrespective of notification.