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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Am J Med. 2014 Mar 25;127(7):608–615. doi: 10.1016/j.amjmed.2014.03.017

Table 1.

Baseline Characteristics of Medicare Patients With a Ischemic Stroke Stratified by Sexa (1998–2008)

No. (%) of Men b
No. (%) of Women b
1988–1994 (n=139,200) 1995–2001 (n=124,905) 2002–2008 (n=101,960) 1988–1994 (n=202,302) 1995–2001 (n= 194,732) 2002–2008 (n=155,025)
Age, y
 65–69 23,515 (16.9) 19,237 (15.4) 15,324 (15.0) 21,262 (10.5) 18,448 (9.5) 13,940 (9.0)

 70–74 30,439 (21.9) 25,831 (20.7) 19,212 (18.8) 31,438 (15.5) 28,518 (14.6) 20,425 (13.2)

 75–79 32,503 (23.4) 28,779 (23.0) 22,163 (21.7) 40,936 (20.2) 38,479 (19.8) 28,158 (18.2)

 80–84 27,627 (19.9) 25,660 (20.5) 21,704 (21.3) 44,819 (22.2) 43,069 (22.1) 34,843 (22.5)

 ≥85 25,116 (18.0) 25,398 (20.3) 23,557 (23.1) 63,847 (31.6) 66,218 (34.0) 57,659 (37.2)

Race
 White 118,762 (85.3) 106,874 (85.6) 85,775 (84.1) 172,756 (85.4) 164,980 (84.7) 130,135 (83.9)

 Black 13,998 (10.1) 13,232 (10.6) 11,431 (11.2) 22,682 (11.2) 22,860 (11.7) 18,257 (11.8)

 Other 6,440 (4.6) 4,799 (3.8) 4,754 (4.7) 6,864 (3.4) 6,892 (3.5) 6,633 (4.3)

Region
 Midwest 36,631 (26.3) 33,770 (27.0) 26,682 (26.2) 52,457 (25.9) 51,359 (26.4) 39,910 (25.7)

 Northeast 30,388 (21.8) 24,598 (19.7) 18,745 (18.4) 44,963 (22.2) 38,841 (20.0) 29,602 (19.1)

 South 51,827 (37.2) 50,021 (40.1) 41,936 (41.1) 76,446 (37.8) 80,239 (41.2) 64,849 (41.8)

 West 20,354 (14.6) 16,516 (13.2) 14,597 (14.3) 28,436 (14.1) 24,293 (12.5) 20,664 (13.3)

Length of stay, median (25th–75th pct.), d 7 (4–12) 5 (3–9) 4 (3–7) 8 (5–13) 5 (3–9) 5 (3–7)

Discharge type
 Home, self-care 58,473 (42.0) 45,848 (36.7) 32,471 (31.9) 69,584 (34.4) 56,633 (29.1) 36,450 (23.5)

 Skilled nursing facility 20,221 (14.5) 25,029 (20.0) 20,001 (19.6) 41,385 (20.5) 51,970 (26.7) 41,501 (26.8)

 Other type of inpatient facility 29,096 (20.9) 30,785 (24.7) 30,147 (29.6) 42,704 (21.1) 47,974 (24.6) 45,806 (29.6)

 Dead 15,766 (11.3) 10,392 (8.3) 6,489 (6.7) 22,416 (11.1) 16,100 (8.3) 10,324 (6.7)

 Other 15,644 (11.2) 12,851 (10.3) 12,852 (12.6) 26,213 (13.0) 22,055 (11.3) 20,944 (13.5)

Comorbid Conditions
 Myocardial Infarction 8,902 (6.4) 11,924 (9.55) 10,341 (10.14) 9,841 (4.86) 14,298 (7.34) 12,414 (8.01)

 Congestive heart failure 17,711 (12.72) 20,503 (16.41) 18,147 (17.8) 31,189 (15.42) 37,717 (19.37) 32,219 (20.78)

 Hypertension 26,107 (18.76) 43,007 (34.43) 48,069 (47.14) 50,187 (24.81) 82,922 (42.58) 85,843 (55.37)

 Diabetes 18,133 (13.03) 23,852 (19.1) 24,055 (23.59) 29,710 (14.69) 37,735 (19.38) 34,789 (22.44)

 Atrial fibrillation 14,638 (10.52) 18,907 (15.14) 18,132 (17.78) 25,418 (12.56) 33,042 (16.97) 30,882 (19.92)

 Vascular disease 6,843 (4.92) 8,714 (6.98) 8,272 (8.11) 67,86 (3.35) 9,728 (5.00) 9,171 (5.92)

 Hyperlipidemia 1,924 (1.38) 9,464 (7.58) 23,814 (23.36) 39,59 (1.96) 15,951 (8.19) 35,247 (22.74)
a

Characteristics are number(percentages) unless otherwise indicated. Data are from a 20% sample of Fee-For-Service Medicare Enrollees 65 years and older.

Comorbid conditions are defined using the Klabunde adaptation of the Charlson Score. Partial list of comorbid conditions presented here.

P value for trend < .001.

b

Percentages may not sum to 100 due to rounding.