Table 2

Comparison of mortality and complications at intervention between MIS and OH cohorts

	Unadjusted results						IPTW results
	MIS		OH		P value	MIS versus OH	MIS		OH		P value	MIS versus OH
	No	%	No	%	P value	OR (95% CI)	No	%	No	%	P value	OR (95% CI)
Death (intervention)	9	0	18	0	0.007	0.35 (0.14 to 0.82)	8	0	25	0	0.003	0.32 (0.12 to 0.73)
Death (overall)*	17	0	44	0	<0.001	0.27 (0.14 to 0.48)	15	0	44	0	<0.001	0.34 (0.18 to 0.62)
Any complication (intervention)	4305	21	4012	28	<0.001	0.54 (0.51 to 0.57)	3503	21	4725	28	<0.001	0.67 (0.64 to 0.71)
Specific complications (intervention)
Gastrointestinal	1637	8	1185	8	<0.001	0.61 (0.57 to 0.66)	1275	8	1479	9	<0.001	0.85 (0.79 to 0.92)
Wounds	325	2	679	5	<0.001	0.20 (0.17 to 0.23)	276	2	783	5	<0.001	0.34 (0.30 to 0.39)
Infections	360	2	815	6	<0.001	0.16 (0.14 to 0.19)	296	2	913	5	<0.001	0.31 (0.27 to 0.36)
Urinary	623	3	786	5	<0.001	0.26 (0.24 to 0.29)	514	3	899	5	<0.001	0.56 (0.50 to 0.62)
Ureteric	6	0	8	0	0.005	0.25 (0.07 to 0.82)	4	0	8	0	0.247	0.50 (0.11 to 1.86)
Cardiovascular	1255	6	1162	8	<0.001	0.30 (0.27 to 0.32)	1047	6	1340	8	<0.001	0.77 (0.70 to 0.83)
Pulmonary	305	1	587	4	<0.001	0.13 (0.11 to 0.15)	262	2	676	4	<0.001	0.38(0.33 to 0.44)
Neurological	84	0	111	1	<0.001	0.18 (0.14 to 0.24)	77	0	120	1	0.002	0.64 (0.47 to 0.86)
Haemorrhage	199	1	270	2	<0.001	0.17 (0.14 to 0.20)	169	1	310	2	<0.001	0.54 (0.44 to 0.65)
Other	736	4	646	5	<0.001	0.22 (0.20 to 0.25)	593	4	786	5	<0.001	0.74 (0.67 to 0.83)

*Death (overall) Includes death at intervention and deaths reported 90 days after intervention.
IPTW, inverse probability weighting of treatment; MIS, minimally invasive surgery; OH, open hysterectomy.