Table 5 Results of the meta-analysis of long-term survival outcomes
Pooled outcomes | Studies (n) | Sample size, n (LG:OG) | Effect size with 95% CI | P value | Heterogeneity (I2, %) | Publication bias (Begg’s P value) |
|---|---|---|---|---|---|---|
Overall survival, month (HR) | 11 | 1391 (588:803) | 0.87 (0.72–1.05) | 0.16 | 0 | 1.000 |
 1-year, n (OR) | 4 | 522 (175:347) | 1.21 (0.40–3.65) | 0.73 | 50 | – |
 3-year, n (OR) | 6 | 888 (366:522) | 1.40 (0.87–2.26) | 0.17 | 56 | – |
 5-year, n (OR) | 3 | 457 (138:319) | 1.40 (0.85–2.31) | 0.19 | 19 | – |
Disease-free survival, month (HR) | 4 | 539 (171:368) | 1.03 (0.76–1.40) | 0.84 | 0 | – |
 1-year, n (OR) | 2 | 336 (83:253) | 2.06 (0.77–5.52) | 0.15 | – | – |
 3-year, n (OR) | 3 | 490 (151:339) | 1.06 (0.46–2.45) | 0.90 | 70 | – |
 5-year, n (OR) | 2 | 319 (69:250) | 1.25 (0.72–2.16) | 0.42 | 0 | – |
Recurrence-free survival, month (HR) | 2 | 308 (170:138) | 1.21 (0.85–1.72) | 0.28 | 0 | – |
 3-year, n (OR) | 1 | 162 (81:81) | 0.85 (0.45–1.62) | 0.62 | – | – |