Comparison 11.

Postoperative total complications

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 All studies	6	346	Risk Ratio (M‐H, Fixed, 95% CI)	0.69 [0.55, 0.86]
1.1 Parenteral nutrition	1	124	Risk Ratio (M‐H, Fixed, 95% CI)	0.63 [0.42, 0.94]
1.2 Enteral nutrition	1	60	Risk Ratio (M‐H, Fixed, 95% CI)	0.38 [0.16, 0.91]
1.3 Supplements	4	162	Risk Ratio (M‐H, Fixed, 95% CI)	0.85 [0.66, 1.10]
2 All studies except those with total complications not patients	5	302	Risk Ratio (M‐H, Fixed, 95% CI)	0.57 [0.41, 0.80]
2.1 Parenteral nutrition	1	124	Risk Ratio (M‐H, Fixed, 95% CI)	0.63 [0.42, 0.94]
2.2 Enteral nutrition	1	60	Risk Ratio (M‐H, Fixed, 95% CI)	0.38 [0.16, 0.91]
2.3 Supplements	3	118	Risk Ratio (M‐H, Fixed, 95% CI)	0.64 [0.31, 1.31]
3 HCC	2	168	Risk Ratio (M‐H, Fixed, 95% CI)	0.77 [0.62, 0.97]
3.1 Parenteral nutrition	1	124	Risk Ratio (M‐H, Fixed, 95% CI)	0.63 [0.42, 0.94]
3.2 Enteral nutrition	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
3.3 Supplements	1	44	Risk Ratio (M‐H, Fixed, 95% CI)	1.0 [0.92, 1.09]