Table 3.

Analysis of demographic and peri-operative factors and relation to the need for overnight admission

	All patients (n = 106)	Successful day-case (n = 89)	Admitted (n = 17)	P-value
				UVA	MVA
Age ≥ 60 years	12	9	3	0.369	NS
BMI ≥ 35 kg/m2	7	6	1	0.896	NS
NSAID in pre-medication	78	69	9	0.035	0.032 [OR = 9.178]
Operation by training grade surgeon	33	26	7	0.329	NS
Cholecystitis at operation/previous pancreatitis	19	16	3	0.604	NS
Previous deranged liver function	5	3	2	0.017	NS
Mean operation time min [range]	62 [15–120]	62 [15–120]	66 [35–90]	0.369b	NS
Operative complication/difficulty	15	12	3	0.652	NS
Operation commenced after 10 am	30	26	4	0.634	NS
Intravenous opiate in recovery	43	34	9	0.257	NS
Intravenous antiemetic in recovery	10	10	0	0.146	NS
Hypotension requiring fluid bolus	6	3	3	0.020	NS
O2 saturation < 95% in recovery	20	13	7	0.010	NS
Anti-emetic on the ward	18	14	4	0.433	NS

NS, not significant; OR, odds ratio; UVA, univariate analysis; MVA, multivariate analysis. (P = chi-squared test in univariate and multiple logistic regression in multivariate analysis.)

^bMann–Whitney test.