Table 1 Characteristics of index AIS hospitalizations
Characteristic | Index Events n (%) n = 439,682 |
|---|---|
Age | |
 <  40 | 12,878 (2.9) |
 40–49 | 25,172 (5.7) |
 50–59 | 64,364 (14.6) |
 60–69 | 95,136 (21.6) |
 70–79 | 103,821 (23.6) |
 80–89 | 101,941 (23.2) |
 90+ | 36,371 (8.3) |
Sex | |
 Female | 225,570 (51.3) |
 Male | 214,111 (48.7) |
Primary payera | |
 Private insurance | 75,983 (17.3) |
 Medicare | 295,655 (67.2) |
 Medicaid | 39,091 (8.9) |
 Self-pay | 16,303 (3.7) |
 No charge | 2308 (0.5) |
Median household income | |
 $66,000+ | 88,803 (20.2) |
 $51,000 - $65,999 | 99,932 (22.7) |
 $40,000 - $50,999 | 118,495 (27.0) |
 $1 - $39,999 | 126,668 (28.8) |
 Missing | 5783 (1.3) |
Length of stay | |
 0–7 days | 306,786 (69.8) |
 >  7 days | 132,896 (30.2) |
Discharge disposition | |
 Routine | 174,933 (39.8) |
 Transfer: short-term hospital | 8551 (1.9) |
 Transfer: other type of facility | 164,884 (37.5) |
 Home health care | 86,989 (19.8) |
 Against medical advice | 3531 (0.8) |
 Discharged alive, destination unknown | 794 (0.2) |
Comorbidities | |
 0–2 | 110,756 (25.2) |
 3–4 | 166,434 (37.9) |
 5–6 | 107,199 (24.4) |
 7+ | 55,292 (12.6) |
 Bed size of hospital |  |
 Small | 64,949 (14.8) |
 Medium | 120,363 (27.4) |
 Large | 254,370 (57.9) |
Control/ownership of hospital | |
 Government, non-federal (public) | 53,708 (12.2) |
 Private, not-for-profit (voluntary) | 326,024 (74.1) |
 Private, investor-owned (proprietary) | 59,950 (13.6) |
Teaching status of hospital | |
 Metropolitan teaching | 278,770 (63.4) |
 Metropolitan non-teaching | 118,548 (27.0) |
 Non-metropolitan | 42,364 (9.6) |