Table 3

Multivariate logistic regression analysis comparing those OOH users whose alternative was ED compared with the other alternatives*

Explanatory variable	OR*	P values	95% CI
Sex
Male	1.24	0.027	1.02 to 1.51
Female	1.00	Ref	Ref
Missing	0.81	0.995	0.51 to 1.95
Age group
0–15	1.74	<0.001	1.31 to 2.32
16–24	0.98	0.877	0.74 to 1.29
25–34	1.21	0.115	0.96 to 1.52
35–64	1.00	Ref	Ref
65+	1.37	0.048	1.00 to 1.86
Ethnicity
White	1.00	Ref	Ref
Asian	2.33	<0.001	1.61 to 3.39
Black	1.67	0.099	0.91 to 3.06
Mixed/other	1.24	0.373	0.78 to 1.97
No response	0.74	0.333	0.41 to 1.36
IMD pentile†
Most deprived	1.60	0.001	1.20 to 2.14
2	1.05	0.754	0.76 to 1.47
3	1.00	Ref	Ref
4	1.13	0.463	0.81 to 1.58
Least deprived	1.07	0.699	0.77 to 1.49
Missing	1.37	0.039	1.02 to 1.83
Constant	0.46		0.35 to 0.49
N	2117

*The OR represents the odds that a satellite unit patient will go to ED compared with a non-ED choice such as wait for the next day or a walk-in centre.
†See Smith et al.19
ED, Emergency Department; IMD, Index of Multiple Deprivation; OOH, out-of-hours.