. 2021 Aug 7;31(10):4528–4541. doi: 10.1007/s11695-021-05643-z

Table 4.

Standard pairwise meta-analysis and network meta-analysis of perioperative complications following metabolic surgery

Intervention	Comparator	No. of direct comparison studies	Pairwise meta-analysis (RR)*	Between-study variance (MA)	Network meta-analysis (RR)*	Between-study variance (NMA)
RYGB	SG	9	0.61 (0.32, 0.92)	0.033	0.53 (0.38–0.75)	< 0.001
RYGB	OAGB	1	0.57	0.210	0.42 (0.24–0.72)	0.002
SG	OAGB	2	0.80 (0.44, 1.41)	0.345	0.78 (0.47, 1.32)	0.263

Intervention

Comparator

No. of direct comparison studies

Pairwise meta-analysis (RR)*

Between-study variance (MA)

Network meta-analysis (RR)*

Between-study variance (NMA)

RYGB

0.61

(0.32, 0.92)

0.033

0.53

(0.38–0.75)

< 0.001

RYGB

OAGB

0.57

0.210

0.42

(0.24–0.72)

0.002

OAGB

0.80

(0.44, 1.41)

0.345

0.78

(0.47, 1.32)

0.263

*Values in parentheses are 95% confidence intervals. A risk ratio (RR) greater than 1.00 favours the intervention (fewer events with intervention than with comparator); a RR of less than 1.00 favours comparator (fewer undesirable events with comparator than with intervention).

MA standard pairwise meta-analysis, NMA network meta-analysis.