Table 3

HRs of incident stroke by occupational class in women and men: the four-province cohort study

Occupational class*Four-province cohort
Number of strokes/participantsPYAR† (incidence)HR‡
95% CI
Number of strokes/participantsPYAR† (incidence)HR‡
95% CI
High6/235690.1 (8.69)1.0020/3581029.0 (19.44)1.00
Middle15/5411624.9 (9.23)1.01
0.35 to 2.93
18/267797.8 (22.56)1.20
0.59 to 2.44
Low26/9122836.1 (9.17)0.69
0.22 to 2.12
28/7032185.7 (12.81)0.46§
0.23 to 0.93
  • *Classification of low, middle and high levels in occupational class: (1) low: peasant, (2) middle: manual labourer or housewife, and (3) high: official/teacher or business/other.

  • †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, satisfactory income.

  • §HR for incident stroke in men with high occupation versus low occupation was 2.17 (95% CI 1.08 to 4.35).