Table 1.
Casesb | Noncasesc | Person Time | Incidence Rate Ratiod | 95% Confidence Interval | ||||
---|---|---|---|---|---|---|---|---|
| ||||||||
(N = 308) | % | (N = 51,295) | % | |||||
Site | ||||||||
NC | 194 | 63 | 16591 | 32 | 218426 | 1 | ||
Iowa | 114 | 37 | 34704 | 68 | 457408 | 0.43 | 0.34 | 0.55 |
Smoking status | ||||||||
Never | 116 | 38 | 27230 | 53 | 362046 | 1 | ||
Past | 135 | 44 | 15530 | 30 | 201973 | 1.21 | 0.94 | 1.55 |
Current | 57 | 19 | 8535 | 17 | 111815 | 2.37 | 1.72 | 3.27 |
Age (years) | ||||||||
<50 | 27 | 9 | 31983 | 62 | 431181 | 1 | ||
50–59 | 50 | 16 | 10356 | 20 | 135751 | 5.88 | 3.69 | 9.39 |
60–69 | 120 | 39 | 6818 | 13 | 85287 | 22.48 | 14.81 | 34.12 |
70+ | 111 | 36 | 2138 | 4 | 23645 | 75.00 | 49.23 | 114.17 |
Race/Ethnicity | ||||||||
White, non-Hispanic | 295 | 96 | 49607 | 97 | 653862 | 1 | ||
Other | 12 | 4 | 1606 | 3 | 20934 | 1.07 | 0.60 | 1.91 |
Education | ||||||||
High school of less | 207 | 69 | 28493 | 57 | 372228 | 1 | ||
Beyond high school | 91 | 31 | 21663 | 43 | 288718 | 1.07 | 0.83 | 1.37 |
BMI (kg/m2) | ||||||||
<25 | 80 | 36 | 9573 | 26 | 127407 | 1 | ||
25–29.9 | 102 | 46 | 19105 | 51 | 253118 | 0.64 | 0.50 | 0.82 |
>=30 | 38 | 17 | 8745 | 23 | 115694 | 0.63 | 0.44 | 0.89 |
Drinks per month at enrollment | ||||||||
None | 184 | 60 | 16450 | 32 | 214040 | 1 | ||
1–4 | 63 | 20 | 13917 | 27 | 184014 | 0.72 | 0.54 | 0.96 |
5–30 | 36 | 12 | 13727 | 27 | 182045 | 0.57 | 0.39 | 0.80 |
>30 | 25 | 8 | 7201 | 14 | 95735 | 0.80 | 0.52 | 1.22 |
Heart disease | ||||||||
No | 236 | 81 | 47750 | 95 | 632603 | 1 | ||
Yes | 55 | 19 | 2590 | 5 | 30975 | 1.41 | 1.04 | 1.90 |
Diabetes | ||||||||
No | 242 | 84 | 48897 | 97 | 645814 | 1 | ||
Yes | 46 | 16 | 1419 | 3 | 17438 | 3.11 | 2.26 | 4.27 |
Hypertensione | ||||||||
No | 91 | 59 | 19029 | 84 | 254169 | 1 | ||
Yes | 62 | 41 | 3665 | 16 | 46840 | 1.74 | 1.25 | 2.42 |
Data not available for all participants due to missing values in some categories.
Cases are defined as deaths with an underlying or contributing cause attributed to stroke on state death certificates by using
International Classification of Diseases, Tenth Revision, codes I60-I69.
Non-cases are participants who did not experience a stroke-related death during study follow-up.
Adjusted for age in categories.
The hypertension question asked on the take-home questionnaire was answered by 23,170 participants (161 stroke deaths).