Table 4 Meta-analysis of the total attack rates among TB students (n = 79)
From: Tuberculosis outbreaks among students in mainland China: a systematic review and meta-analysis
Subgroup analysis | Attack rate (95% CI) | Number of studies | Heterogeneity | |
|---|---|---|---|---|
I2 (%) | p | |||
Outbreaks classified by case number | ||||
 10 or more | 6.10(4.70,7.20) | 47 | 93.00 | < 0.05 |
 Fewer than 10 | 3.00(2.10,4.30) | 32 | 86.30 | < 0.05 |
Type of outbreak school | ||||
 Junior middle school | 5.80(2.80,12.80) | 5 | 85.40 | < 0.05 |
 Senior middle school | 4.30(3.30,5.80) | 48 | 91.90 | < 0.05 |
 University or college | 5.00(3.50,7.10) | 26 | 92.30 | < 0.05 |
Region where the outbreak school was located | ||||
 Eastern region | 4.70(3.70,6.00) | 64 | 91.70 | < 0.05 |
 Central region | 8.70(5.80,13.20) | 6 | 71.40 | < 0.05 |
 Western region | 2.80(1.70,4.90) | 9 | 91.10 | < 0.05 |
 Overall effect | 4.60(3.80,5.70) | 79 | 91.70 | < 0.05 |