From: The value of one versus three sputum smear examinations for diagnosis of pulmonary tuberculosis in Asella hospital, South-East Ethiopia
Age category
AFB status
% of positive
Positive
Negative
15–25
303
1682
4.3
26–45
256
2664
3.7
P < 0.00001
46–60
59
1321
0.8
>60
19
708
0.3
Total
637
6375
9.1