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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 analysisAttack rate (95% CI)Number of studiesHeterogeneity
I2 (%)p
Outbreaks classified by case number
 10 or more6.10(4.70,7.20)4793.00< 0.05
 Fewer than 103.00(2.10,4.30)3286.30< 0.05
Type of outbreak school
 Junior middle school5.80(2.80,12.80)585.40< 0.05
 Senior middle school4.30(3.30,5.80)4891.90< 0.05
 University or college5.00(3.50,7.10)2692.30< 0.05
Region where the outbreak school was located
 Eastern region4.70(3.70,6.00)6491.70< 0.05
 Central region8.70(5.80,13.20)671.40< 0.05
 Western region2.80(1.70,4.90)991.10< 0.05
 Overall effect4.60(3.80,5.70)7991.70< 0.05