Table 3.
Variables | No. of studies | No. of patients | HR (95% CI) | p | Heterogeneity | Effects model | |
---|---|---|---|---|---|---|---|
I2 (%) Ph | |||||||
Overall survival | |||||||
Total | 7 | 2,294 | 1.56 (1.13–2.16) | 0.007 | 89.0 | <0.001 | Random |
Country | |||||||
Japan | 4 | 1,312 | 1.39 (1.15–1.69) | 0.001 | 37.2 | 0.189 | Fixed |
China | 3 | 982 | 1.87 (1.01–3.47) | 0.048 | 95.9 | <0.001 | Random |
Sample size | |||||||
<330 | 3 | 685 | 1.74 (0.75–4.02) | 0.198 | 92.2 | <0.001 | Random |
≥330 | 4 | 1,609 | 1.31 (1.08–1.60) | 0.007 | 54.2 | 0.088 | Random |
Treatment | |||||||
Surgery | 5 | 1,915 | 1.67 (1.15–2.41) | 0.007 | 92.2 | <0.001 | Random |
Surgery + chemotherapy/chemotherapy | 2 | 379 | 1.17 (0.47–2.89) | 0.731 | 67.8 | 0.078 | Random |
Cut-off value | |||||||
≥2 | 1 | 382 | 1.15 (1.05–1.25) | 0.002 | – | – | – |
≥3 | 4 | 1,261 | 1.61 (0.89–2.91) | 0.112 | 90.8 | <0.001 | Random |
≥4 | 2 | 651 | 1.67 (1.26–2.20) | <0.001 | 0 | 0.842 | Fixed |
Survival analysis | |||||||
MVA | 6 | 1,988 | 1.56 (1.04–2.34) | 0.030 | 90.5 | <0.001 | Random |
UVA | 1 | 306 | 1.52 (1.18–1.94) | 0.001 | – | – | – |
Recurrence-free survival | |||||||
Total | 5 | 1,606 | 1.47 (0.97–2.23) | 0.072 | 85.6 | <0.001 | Random |
Country | |||||||
Japan | 4 | 1,312 | 1.23 (0.95–1.59) | 0.121 | 50.7 | 0.107 | Random |
China | 1 | 294 | 2.93 (2.10–4.09) | <0.001 | – | – | – |
Sample size | |||||||
<330 | 3 | 673 | 1.83 (1.03–3.25) | 0.039 | 78.6 | 0.009 | Random |
≥330 | 2 | 933 | 1.11 (0.92–1.35) | 0.267 | 0 | 0.971 | Fixed |
Treatment | |||||||
Surgery | 3 | 1,227 | 1.53 (0.85–2.73) | 0.155 | 91.8 | <0.001 | Random |
Surgery + chemotherapy/chemotherapy | 2 | 379 | 1.37 (0.65–2.85) | 0.406 | 67.9 | 0.078 | Random |
Cutoff value | |||||||
≥3 | 3 | 955 | 1.47 (0.69–3.13) | 0.318 | 90.7 | <0.001 | Random |
≥4 | 2 | 651 | 1.41 (0.85–2.34) | 0.187 | 78.3 | 0.032 | Random |
COUNT, controlling nutritional status; OS, overall survival; RFS, recurrence-free survival; MVA, multivariate analysis; UVA, univariate analysis.