From: Tuberculosis outbreaks among students in mainland China: a systematic review and meta-analysis
Characteristic | Number of studies | Number of patients | Percentage (%) |
---|---|---|---|
Sex | 72 | Â | Â |
 Male | 54 | 75.00 | |
 Female | 18 | 25.00 | |
Family history | 17 | Â | Â |
 Yes | 7 | 41.20 | |
 No | 10 | 58.80 | |
Type of school | 107 | Â | Â |
 Junior middle school | 10 | 9.30 | |
 Senior middle school | 66 | 61.70 | |
 University or college | 31 | 29.00 | |
Sputum smear | 90 | Â | Â |
 Positive | 75 | 83.30 | |
 Negative | 15 | 16.70 | |
Smear positive | 20 | Â | Â |
 1+ | 5 | 25.00 | |
 2+ | 6 | 30.00 | |
 3+ | 4 | 20.00 | |
 4+ | 5 | 25.00 | |
Case-finding interval | 95 | Â | Â |
 2 months or less | 50 | 52.60 | |
 More than 2 months | 45 | 47.40 | |
Cavernous pulmonary TB | 20 | 20 | ---- |