TABLE 2.

Adjusted association between months and admission days

Variables	Odds ratio	95% CI	P value
January	1.264	1.094‐1.460	.001
February	1.146	0.986‐1.332	.077
March	1.043	0.898‐1.213	.581
April	1.141	0.983‐1.323	.063
May	0.993	0.853‐1.156	.929
June	Reference	‐	‐
July	1.037	0.892‐1.206	.633
August	1.117	0.964‐1.296	.142
September	1.144	0.986‐1.327	.076
October	1.454	1.264‐1.673	<.001
November	1.408	1.221‐1.623	<.001
December	1.330	1.153‐1.534	<.001

Abbreviation: CI, confidence interval.