Table 4.
Stroke Incidence Rates Per 100 000 Person‐Years for Women and Men in the Strong Heart Study (American Indian) and Atherosclerosis Risk in Communities Study (Black, White)
| American Indian | Black | White | ||||
|---|---|---|---|---|---|---|
| Person‐Years | Rateb (95% CI) | Person‐Years | Rateb (95% CI) | Person‐Years | Rateb (95% CI) | |
| Women | ||||||
| Total participants | (n=1858) | (n=2309) | (n=5532) | |||
| Attained agea | ||||||
| 45 to 54 | 4748 | 147 (70–309) | 7111 | 211 (127–350) | 15 030 | 67 (36–124) |
| 55 to 64 | 10 596 | 359 (261–493) | 17 284 | 434 (346–544) | 41 379 | 121 (92–159) |
| 65 to 74 | 8277 | 725 (563–934) | 15 638 | 659 (543–799) | 42 334 | 284 (237–339) |
| 75 to 90 | 3650 | 1123 (827–1525) | 4658 | 1074 (814–1416) | 15 487 | 646 (531–786) |
| Birth cohort | ||||||
| 1920 to 1931 | 8726 | 825 (655–1040) | 11 494 | 853 (700–1039) | 3605 | 411 (350–482) |
| 1932 to 1938 | 7706 | 441 (315–618) | 16 166 | 501 (403–623) | 42 731 | 213 (173–262) |
| 1939 to 1947 | 11 654 | 343 (252–468) | 18 164 | 352 (276–450) | 38 215 | 107 (79–146) |
| Men | ||||||
| Total participants | (n=1324) | (n=1456) | (n=4882) | |||
| Attained agea | ||||||
| 45 to 54 | 3557 | 253 (132–486) | 4181 | 383 (235–625) | 11 258 | 71 (36–142) |
| 55 to 64 | 7025 | 416 (291–596) | 9901 | 626 (488–803) | 34 098 | 211 (168–266) |
| 65 to 74 | 5264 | 683 (493–948) | 8752 | 811 (643–1024) | 36 002 | 450 (386–525) |
| 75 to 90 | 1762 | 1192 (777–1828) | 2427 | 989 (663–1476) | 12 844 | 709 (577–870) |
| Birth cohort | ||||||
| 1920 to 1931 | 5042 | 972 (735–1286) | 7202 | 903 (708–1151) | 33 093 | 556 (481–642) |
| 1932 to 1938 | 4695 | 575 (394–839) | 8743 | 675 (523–871) | 35 471 | 276 (227–337) |
| 1939 to 1947 | 8633 | 232 (150–359) | 10 039 | 488 (369–646) | 28 050 | 182 (138–239) |
a
Category includes all participants who were in the age range at any time during follow‐up.
b
Rate per 100 000 person‐years.