Table 2.

Number of Stroke Events and Unadjusted Incidence Rates of Ischemic Stroke Over 11 Months of Follow-up, by Adherence to Oral Anticoagulation Measured during Follow-up.

	Adherent Use	Non-Adherent Use	Non-Use
Patient-years (% of Total Follow-up)	11,192 (35.0%)	3,497 (10.9%)	17,268 (54.0%)
No. Ischemic Stroke Events	163	67	471
Incidence Ischemic Stroke per 100 p-y (CI)	1.46 (1.25-1.70)	1.92 (1.51-2.43)	2.73 (2.49-2.99)

Abbreviation: P-y=person-years.

Every day of the study, adherent use was defined as having at least 80% of the previous 30 days covered with oral anticoagulation. Non-adherent use was defined as having more than 0% but less than 80% of the previous 30 days covered with oral anticoagulation. Non-use was defined as having 0% of the previous 30 days covered with oral anticoagulation.

The proportion of follow-up indicates the proportion of the total follow-up for all study participants that was spent on each time-dependent treatment group.