Table 3 Analysis of the 15 studies stratified by geographic origin
From: Association between Epstein-Barr virus and Thymic epithelial tumors: a systematic review
Geographic origin | No of studies | Events | Sample size | Point estimates of event rates (FE) | Point estimates of event rates (RE) | Homogeneity (Cochran’s Q) | I 2 1 | Homogeneity (p-value) | ||
|---|---|---|---|---|---|---|---|---|---|---|
Point estimate | 95% CI | Point estimate | 95% CI | |||||||
Asia | 7 | 10 | 174 | 0 | 0–0.03 | 0.05 | 0–0.2 | 37.38 | 83.9 | < 0.0001 |
Europe | 6 | 30 | 252 | 0.04 | 0.02–0.07 | 0.19 | 0–0.56 | 164.51 | 97 | < 0.0001 |
Other | 2 | 0 | 56 | 0 | 0–0.03 | 0 | 0–0.03 | 0.09 | 0 | 0.7628 |
Summary | 15 | 40 | 472 | 0.02 | 0–0.03 | 0.09 | 0–0.23 | 206.73 | 93.2 | < 0.0001 |
Total within (FE) | 201.98 | < 0.0001 | ||||||||
Total between (FE) | 4.75 | 0.093 | ||||||||
Total between (RE) | 4.93 | 0.0848 | ||||||||