Table 1. Baseline characteristics of Health and Retirement Study participants who were stroke-free in 1998 (n=17,340).
| Participants with 1st incident stroke during follow-up (1998 to 2008) | P-value comparing stroke survivors to decedents1 | Participants with no incident stroke during follow-up (1998-2008) | P-value comparing stroke-free participants to those with stroke2 | ||
|---|---|---|---|---|---|
|
|
|
||||
| Stroke Survivors Number (%) | Stroke Decedents Number (%) | Number (%) | |||
|
|
|||||
| 1189(100%) | 385(100%) | 15766(100%) | |||
| Baseline memory score(SD) | 0.83(0.60) | 0.55(0.72) | 1.20(0.38) | ||
| Gender | 0.023 | 0.537 | |||
| Male | 517(43.5%) | 142(36.9%) | 6728(42.7%) | ||
| Female | 672(56.5%) | 243(63.1%) | 9038(57.3%) | ||
| Race | 0.385 | <0.001 | |||
| White | 948(79.7%) | 299(77.7%) | 13192(83.7%) | ||
| Non-white | 241(20.3%) | 86(22.3%) | 2574(16.3%) | ||
| Age (SD) | 69.8 (9.8) | 75.6(9.8) | <0.001 | 65.9(10.2) | <0.001 |
| Marital status | |||||
| Married/partnered | 721(60.6%) | 161(41.8%) | <0.001 | 10895(69.1%) | <0.001 |
| Widowed/sep/divorced | 431(36.3%) | 205(53.3%) | <0.001 | 4419(28.0%) | <0.001 |
| Never married | 37(3.1%) | 19(4.9%) | 0.093 | 452(2.9%) | 0.121 |
| Years of education (SD) | 11.8(3.1) | 11.2(3.3) | 0.002 | 12.4(3.0) | <0.001 |
| Mother's education years (SD) | 8.8(2.7) | 8.5(2.1) | 0.019 | 9.4(3.0) | <0.001 |
| Wealth in $1000 (25th, 75th) | 257.5(29.0, 282.2) | 211.4(10.5, 212.4) | <0.001 | 343.1(50.2, 353) | <0.001 |
| Height in meters (SD) | 1.68(0.1) | 1.67(0.1) | 0.005 | 1.69(0.1) | <0.001 |
| Place of birth | |||||
| Northeast | 222(18.7%) | 75(19.5%) | 0.724 | 3321(21.1%) | 0.041 |
| Midwest | 308(25.9%) | 112(29.1%) | 0.219 | 4749(30.1%) | 0.005 |
| South | 523(44.0%) | 155(40.3%) | 0.199 | 5636(35.7%) | <0.001 |
| West | 69(5.8%) | 21(5.4%) | 0.798 | 1176(7.5%) | 0.011 |
| Non US | 67(5.6%) | 22(5.7%) | 0.953 | 884(5.6%) | 0.938 |
Descriptive data are not weighted.
For individuals who were aged 50+ and stroke free at baseline in 1998. Values in the table are counts (percentage) for categorical variables and means (SD) for continuous variables. SD is standard deviation. 25th and 75th are the first and the third quartiles.
1
Null hypothesis for P-value1: Baseline characteristics are the same for stroke survivors as for stroke decedents.
2
Null hypothesis for P-value2: Baseline characteristics are the same for participants who experienced first incident stroke as for stroke-free cohort members.