Stroke Mortality, Clinical Presentation and Day of Arrival: The Atherosclerosis Risk in Communities (ARIC) Study

Table 2

Logistic regression results. Weekend effect* among stroke patients overall and by stroke type in the atherosclerosis risk in communities (ARIC) study (1987–1989).

Model description	Odds of 28-day mortality comparing weekend patients to weekday
	patients (OR; 95% CI)
	Overall (𝑁=929)	Ischemic (𝑁=821)	Hemorrhagic (𝑁=108)
Model 1. Crude	1.06 (0.64, 1.76)	1.36 (0.73, 2.53)	0.61 (0.23, 1.61)
Model 2. Model 1 + age, race* center, sex	1.07 (0.64, 1.78)	1.39 (0.74, 2.62)	0.42 (0.16, 1.13)
Model 3. Model 2 + Comorbidities^†, smoking status, drinking status, onset to imaging time^‡, event year, recurrent stroke	0.87 (0.51, 1.50)	1.17 (0.60, 2.23)	0.37 (0.11, 1.26)

*Weekend defined as any arrival time from midnight Friday to midnight Sunday.
^†Charlson comorbidity index score of ≤1, 2-3, >3.
^‡24 hours or ≥24 hours.