Stroke Mortality, Clinical Presentation and Day of Arrival: The Atherosclerosis Risk in Communities (ARIC) Study
Table 3
Sensitivity analysis 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 ()
Ischemic ()
Hemorrhagic ()
Model 1. Crude
0.85 (0.52, 1.40)
1.14 (0.62, 2.09)
0.41 (0.16, 1.06)
Model 2. Model 1 + age, race* center, sex
0.86 (0.52, 1.41)
1.14 (0.62, 2.11)
0.42 (0.16, 1.13)
Model 3. Model 2 + Comorbidities†, smoking status, drinking status, onset to imaging time‡, event year, recurrent stroke
0.70 (0.42, 1.20)
0.98 (0.51, 1.89)
0.30 (0.09, 1.00)
*Weekend defined as any arrival time from 6 pm Friday to 7 am Monday. †Charlson comorbidity index score of ≤1, 2-3, >3. ‡24 hours or ≥24 hours.
