Table 3.

Cardiovascular disease-related hospitalizations among patients diagnosed with ischemic stroke according to time since index stroke

	At Risk		Hospitalization Due to Cardiovascular Disease
Time Period	N*	PY**	Patients	Hosp†	%‡	Freq§	Hazard#	Total Rate°
Month 1	18,695	1,429	1,026	1,049	5.5	1.02	0.72	0.73
Month 2	16,821	1,359	447	451	2.7	1.01	0.33	0.33
Months 3–6	16,319	5,274	1,061	1,208	7.4	0.28	0.20	0.23
Months 7–12	15,361	7,457	871	1,024	5.7	0.20	0.12	0.14
Year 2	14,436	13,642	1,216	1,587	8.4	0.10	0.09	0.12
Year 3	12,917	12,265	1,008	1,316	7.8	0.11	0.08	0.11
Year 4	11,628	11,081	839	1,048	7.2	0.10	0.08	0.10
Year 5	10,514	9,997	747	938	7.1	0.10	0.07	0.09

*N=number surviving to beginning of each time period

**PY=person years accumulated by patients during each period

^†Hospitalization count in each period

^‡% gives the proportion of patients hospitalized

^§Frequency expressed as hospitalizations per patient hospitalized (per month)

^#Hazard expressed as patients hospitalized per patient year

°Rate expressed as hospitalizations per patient year