Table 6. Overall analysis of LAARP vs. PSARP.

Outcomes	No. of studies	Participants		Statistical results			Heterogeneity		Analysismodel
		LAARP	PSARP	Statistic	Value(95%CI)	P value	I2 (%)	P value
Length of hospital stay	3	76	74	WMD	-3.08 [-3.83, -2.33]	<0.00001	64	0.06	Random
Total postoperative complications	6	120	103	RR	0.66 [0.44, 0.99]	0.05	14	0.33	Fixed
Rectal prolapse	8	164	141	RR	1.23 [0.74, 2.02]	0.42	15	0.31	Fixed
Anal stenosis	5	135	119	RR	1.32 [0.61, 2.86]	0.48	0	0.66	Fixed
Wound infection/dehiscence	4	83	75	RR	0.27 [0.09, 0.85]	0.02	0	0.47	Fixed
Postoperative anorectal manometry
Rectal anal inhibitory reflex	3	57	47	RR	1.07 [0.87, 1.31]	0.53	0	0.39	Fixed
Anal canal resting pressure	3	57	47	WMD	4.10 [0.71, 7.49]	0.02	0	0.47	Fixed
High-pressure zone length	3	57	47	WMD	0.63 [-1.25, 2.52]	0.51	0	0.90	Fixed
Kelly's clinical score
Fecal incontinence	3	57	47	WMD	0.01 [-0.13, 0.14]	0.94	0	0.93	Fixed
Fecal staining	3	57	47	WMD	0.05 [-0.08, 0.18]	0.47	0	0.90	Fixed
Sphincter squeeze	3	57	47	WMD	0.14 [-0.16, 0.44]	0.34	75	0.02	Random
Average score	3	57	47	WMD	0.12 [-0.32, 0.56]	0.58	0	0.80	Fixed
Good ranking	2	24	19	RR	1.50 [0.57, 3.95]	0.42	0	0.42	Fixed
Krickenbeck classification
Voluntary bowel movements	5	71	84	RR	1.18 [0.96, 1.44]	0.11	0	0.78	Fixed
Soiling grade 1	4	47	50	RR	0.78 [0.42, 1.45]	0.44	0	0.49	Fixed
Soiling grade 2 or 3	5	71	84	RR	0.71 [0.39, 1.28]	0.25	0	0.47	Fixed
Grade 1 constipation	2	42	54	RR	0.63 [0.20, 1.93]	0.42	0	0.83	Fixed
Grade 2 or 3 constipation	3	62	73	RR	0.37 [0.14, 0.94]	0.04	23	0.27	Fixed

LAARP, laparoscopically assisted anorectal pull-through; PSARP, posterior sagittal anorectoplasty; WMD: weighted mean difference; RR: risk ratio.