Table 2 Relation between income and educational level stratified by age groups 30–64 (A) and 65–74 (B) among patients hospitalised for the first time with AMI in 1995–2002.
| (A) Patients 30–64 years old† | Education | Total | |||
|---|---|---|---|---|---|
| Long | Medium | Short | |||
| Income | High, n (%) | 1908 (66.1)* | 3322 (36.8) | 1888 (19.9) | 7118 (33.3) |
| Medium, n (%) | 559 (19.4) | 3383 (37.5)* | 3238 (34.1) | 7180 (33.6) | |
| Low, n (%) | 419 (14.5) | 2313 (25.6) | 4361 (46.0)* | 7093 (33.2) | |
| Total, n (%) | 2886 (100) | 9018 (100) | 9487 (100) | 21391 (100) | |
| (%) | (13.5) | (42.2) | (44.4) | (100) | |
| (B) Patients 65–74 years old‡ | |||||
| Income | High, n (%) | 1147 (77.3)† | 2016 (42.7) | 2230 (22.4) | 5393 (33.4) |
| Medium, n (%) | 233 (15.7) | 1592 (33.7)† | 3575 (35.9) | 5400 (33.4) | |
| Low, n (%) | 104 (7.0) | 1111 (23.5) | 4161 (41.8)† | 5376 (33.2) | |
| Total, n (%) | 1484 (100) | 4719 (100) | 9966 (100) | 16169 (100) | |
| (%) | (9.2) | (29.2) | (61.6) | (100) | |
*Percentage agreement between ranked categories of income and education = 45.1. Simple κ = 0.18 (95% CI 0.17 to 0.19); weighted κ = 0.24 (95% CI 0.23 to 0.25). †Percentage agreement between ranked categories of income and education = 42.4. Simple κ = 0.14 (95% CI 0.13 to 0.15); weighted κ = 0.21 (95% CI 0.20 to 0.22). ‡High, medium, and low income refer to tertiles of income adjusted for age. Short education is <10 years, medium 10–12 years, and long >12 years.