Table 4. Estimates of percentage of responses and resections in patients receiving mono chemotherapy versus combination chemotherapy groups including the 95% confidence interval from the random effect model and number of assessable studies for each group (n).

Group	Mono Chemotherapy	Combination Chemotherapy
Complete response[95% CI](number of studies assessable)	2.2% [1.3%–3.3%]I2 = 20.8% [0%–49.7%](n = 30)	5.3% [3.8%–7.0%]I2 = 48.3% [25.5%–64.1%](n = 41)
Partial response[95% CI](number of studies assessable)	25.8% [20.2%–31.8%]I2 = 78.8% [70.3%–84.9%](n = 30)	34.7% [28.9%–40.9%]I2 = 79.5% [72.1%–85%](n = 35)
Resection rate (group 1)[95% CI](number of studies assessable)	80.8% [66.1%–92.1%]I2 = 93.9% [91.2%–95.7%](n = 13)	66.2% [57.9%–74.0%]I2 = 77.1% [62.6%–86%](n = 19)
Resection rate (group 2)[95% CI](number of studies assessable)	27.3% [18.1%–37.5%]I2 = 87.7% [82.7%–91.3%](n = 22)	33.0% [25.2%–41.3%]I2 = 87.3% [82.9%–90.6%](n = 29)