Table 3 Relation between income level and educational level and 30 day mortality and long term mortality after first time AMI*.
| Patients aged 30–64 | Adjusted for age, sex, and period | Adjusted for age, sex, period, civil status, and comorbidity | Adjusted for age, sex, period, civil status, comorbidity, and education or income† | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0–30 days | ⩾31 days | 0–30 days | ⩾31 days | 0–30 days | ⩾31 days | |||||||||
| RR | (95% CI) | RR | (95% CI) | RR | (95% CI) | RR | (95% CI) | RR | (95% CI) | RR | (95% CI) | |||
| Income | High | 1§ | 1‡ | 1‡ | 1‡ | 1‡ | 1‡ | |||||||
| Medium | 1.26 | (1.1 to 1.45) | 1.18 | (1.05 to 1.33) | 1.21 | (1.10 to 1.44) | 1.17 | (1.03 to 1.32) | 1.16 | (1.05 to 1.39) | 1.11 | (0.98 to 1.26) | ||
| Low | 1.88 | (1.65 to 2.13) | 2.08 | (1.86 to 2.33) | 1.63 | (1.45 to 1.87) | 1.77 | (1.57 to 1.97) | 1.54 | (1.36 to 1.79) | 1.65 | (1.45 to 1.85) | ||
| Education | Long | 1‡ | 1‡ | 1‡ | 1‡ | 1‡ | 1‡ | |||||||
| Medium | 1.26 | (1.05 to 1.51) | 1.24 | (1.05 to 1.46) | 1.25 | (1.05 to 1.50) | 1.27 | (1.07 to 1.51) | 1.15 | (0.95 to 1.38) | 1.18 | (0.99 to 1.41) | ||
| Short | 1.54 | (1.29 to 1.84) | 1.63 | (1.39 to 1.91) | 1.47 | (1.23 to 1.75) | 1.57 | (1.33 to 1.86) | 1.24 | (1.03 to 1.50) | 1.33 | (1.11 to 1.59) | ||
| Patients aged 65–74 | ||||||||||||||
| Income | High | 1‡ | 1‡ | 1‡ | 1‡ | 1‡ | 1‡ | |||||||
| Medium | 1.19 | (1.08 to 1.31) | 1.21 | (1.12 to 1.31) | 1.16 | (1.05 to 1.28) | 1.16 | (1.07 to 1.26) | 1.14 | (1.03 to 1.26) | 1.15 | (1.06 to 1.25) | ||
| Low | 1.31 | (1.19 to 1.44) | 1.43 | (1.32 to 1.55) | 1.30 | (1.18 to 1.43) | 1.40 | (1.29 to 1.51) | 1.27 | (1.15 to 1.41) | 1.38 | (1.27 to 1.50) | ||
| Education | Long | 1‡ | 1‡ | 1‡ | 1‡ | 1 | 1 | |||||||
| Medium | 1.16 | (0.99 to 1.36) | 1.17 | (1.03 to 1.33) | 1.13 | (0.96 to 1.32) | 1.15 | (1.02 to 1.31) | 1.06 | (0.90 to 1.24) | 1.07 | (0.94 to 1.22) | ||
| Short | 1.26 | (1.09 to 1.47) | 1.25 | (1.11 to 1.41) | 1.22 | (1.05 to 1.42) | 1.22 | (1.08 to 1.38) | 1.09 | (0.94 to 1.28) | 1.07 | (0.94 to 1.22) | ||
RR, relative risk; CI, confidence interval. *The reference group was patients with long education or high income in the respective strata. 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. †Models examining the effects of income on mortality were adjusted for education, and models examining the effects of education were similarly adjusted for income. ‡Overall test for variable within stratum yields p<0.05.