5. Results of small‐incision vs open cholecystectomy: alloc. concealment (compar.2).

Outcome	RD/WMD	HQ/LQ/AT	Fixed	Random	Discrepancy	Emphasize	HQ‐LQ difference	Significant
Minor complications	RD	HQ	0.12 (0.03, 0.22) *	0.11 (0.02, 0.21) *	no
		LQ	‐0.03 (‐0.07, 0.02)	‐0.01 (‐0.04, 0.02)	no
		AT	0.02 (‐0.03, 0.06)	0.01 (‐0.03, 0.05)	no	random	yes	yes/no
Total complications	RD	HQ	0.15 (0.04, 0.25) *	0.14 (0.04, 0.24) *	no
		LQ	‐0.05 (‐0.10, 0.00)	‐0.03 (‐0.10, 0.03)	no
		AT	0.01 (‐0.04, 0.05)	0.00 (‐0.06, 0.07)	no	random	yes	yes/no
Hospital stay	WMD	HQ	‐3.90 (‐4.57, ‐3.23) *	‐3.90 (‐4.57, ‐3.23) *	no
		LQ	‐1.70 (‐2.05, ‐1.35) *	‐1.70 (‐2.05, ‐1.35) *	no
		AT	‐2.16 (‐2.47, ‐1.85) *	‐2.78 (‐4.94, ‐0.62) *	no	random	no	yes
* significant result	HQ: high‐quality trials	LQ: low‐quality trials	AT: all trials	RD: risk difference	WMD: weighted mean difference	random: random‐effects model