Table 4.

Apfel comparison in PONV 24 h: literature versus our findings.

Apfel risk factor	N	PONV 24 h	PONV 24 h (Apfel) (%)	p-Value	CI
2	13 (36.1%)	2 (15.4%)	40	0.071	[0.04, 0.42]
3	15 (41.7%)	4 (26.7%)	60	0.008	[0.11, 0.52]
4	8 (22.2%)	6 (75.0%)	80	0.723	[0.41, 0.92]