Number, rate and HR of incident stroke in older people with actual income in China: the four-province cohort study
| Annual income (¥) | All participants | Women | Men | ||||||
| Number of strokes/participants | PYAR* (incidence) | HR† 95% CI | Number of strokes/participants | PYAR* (incidence) | HR† 95% CI | Number of strokes/participants | PYAR* (incidence) | HR† 95% CI | |
| Personal | |||||||||
| ≥10 000 | 48/1377 | 4061.7 (11.82) | 1.00 | 12/682 | 2019.9 (5.94) | 1.00 | 36/695 | 2041.8 (17.63) | 1.00 |
| 4800 to <10 000 | 21/568 | 1744.3 (12.04) | 1.14 0.60 to 2.19 | 10/334 | 1008.1 (9.92) | 2.14 0.78 to 5.91 | 11/234 | 736.2 (14.94) | 0.87 0.37 to 2.07 |
| 0 to <4800 | 43/969 | 3078.2 (13.97) | 1.54 0.83 to 2.86 | 24/603 | 1932.9 (12.42) | 3.05 1.17 to 8.00 | 19/366 | 1145.3 (16.59) | 0.96 0.41 to 2.24 |
| Family (per person) | |||||||||
| ≥12 000 | 53/1133 | 3575.4 (14.82) | 1.00 | 15/595 | 1914.1 (7.84) | 1.00 | 38/538 | 1661.3 (22.87) | 1.00‡ |
| 4800 to <12 000 | 25/737 | 2307.1 (10.84) | 0.66 0.40 to 1.10 | 13/419 | 1308.5 (9.94) | 1.02 0.45 to 2.33 | 12/318 | 998.6 (12.02) | 0.42 0.21 to 0.88 |
| 0 to <4800 | 24/755 | 2174.7 (11.04) | 0.75 0.37 to 1.50 | 13/416 | 1199.4 (10.84) | 1.71 0.62 to 4.71 | 11/339 | 975.2 (11.28) | 0.37 0.13 to 1.07 |
The top tertile of actual personal and family incomes was treated as the high level. Of 3016 eligible participants in the four-province cohort study, 102 missing occurred in annual personal income and 391 missing in family annual income per person.
*PYAR (incidence): person-year at risk (incidence rate); incidence rate per 1000 person-years.
†Models are adjusted for: age (continuous), sex, body mass index (BMI), smoking, alcohol consumption, marital status, frequency of visiting children or other relatives, hypertension, heart disease, diabetes, activity of daily living, depression and dementia, and urban rurality, education, occupation.
‡The overall p value for family income in men was 0.037.