Outcomes | No. of studies | Sample size | Heterogeneity | Overall effect size | 95% CI of overall effect | P Value | ||
---|---|---|---|---|---|---|---|---|
RATS | VATS | I2(%) | P Value | |||||
Operation time (min) | 13 | 3995 | 4211 | 97 | < 0.001 | WMD = -0.79 | -15.65 ~ 14.06 | 0.920 |
Estimated blood loss (mL) | 7 | 385 | 483 | 93 | < 0.001 | WMD = -50.40 | -90.32 ~ −10.48 | 0.010 |
Conversion | 12 | 4441 | 4461 | 37 | 0.100 | OR = 0.50 | 0.43 ~ 0.60 | < 0.001 |
Dissected lymph node stations | 8 | 997 | 1144 | 86 | < 0.001 | WMD = 0.51 | 0.15 ~ 0.86 | 0.005 |
Dissected lymph nodes | 14 | 1396 | 1564 | 93 | < 0.001 | WMD = 1.72 | 0.63 ~ 2.81 | 0.002 |
Time of chest tube drainage (days) | 9 | 892 | 1075 | 37 | 0.120 | WMD = -0.61 | -0.78 ~ −0.44 | < 0.001 |
Length of hospital stay (days) | 14 | 4225 | 4489 | 80 | < 0.001 | WMD = -1.12 | -1.58 ~ − 0.66 | < 0.001 |
Overall complications | 15 | 4890 | 5729 | 11 | 0.330 | OR = 0.90 | 0.83 ~ 0.99 | 0.020 |
Mortality | 6 | 3623 | 4587 | 37 | 0.160 | OR = 0.99 | 0.68 ~ 1.45 | 0.970 |
Overall survival | 4 | 659 | 1471 | 28 | 0.240 | HR = 1.02 | 0.82 ~ 1.26 | 0.880 |
Disease-free survival | 2 | 76 | 123 | 0 | 0.490 | HR = 1.03 | 0.66 ~ 1.61 | 0.890 |
Recurrence rate | 6 | 605 | 631 | 0 | 0.490 | OR = 0.51 | 0.36 ~ 0.72 | < 0.001 |
Cost (USD) | 4 | 615 | 636 | 0 | 0.550 | WMD = 3909.87 | 3706.90 ~ 4112.84 | < 0.001 |