Table 1.
Baseline Characteristics of Entire Cohort and Study Population I (Income as Exposure) Stratified by Sex
| Entire Cohort | Men | Women | |||||
|---|---|---|---|---|---|---|---|
| Characteristics | (N = 45,874) | Low (n = 8829) | Middle (n = 10,450) | High (n = 11,720) | Low (n = 6432) | Middle (n = 4810) | High (n = 3540) |
| Days of follow-up, median (25th–75th percentile) | 1237 (525–2102) | 1247 (475–2162) | 1256 (505–2155) | 1201 (560–2008) | 1272 (503–2123) | 1204 (525–2075) | 1276 (613–2048) |
| Age (years), median + SD | 65.5 (12.6) | 67.4 (13.7) | 63.6 (12.4) | 61.5 (9.7) | 73.3 (12.3) | 67.1 (12.8) | 62.6 (10.7) |
| Age group (years), n (%) | |||||||
| <65 years | 21,068 (45.9) | 3,198 (36.2) | 5058 (48.4) | 7453 (63.6) | 1240 (19.3) | 1886 (39.2) | 2160 (61.0) |
| 65–74 years | 13,041 (28.4) | 2493 (28.2) | 3281 (31.4) | 3178 (27.1) | 1754 (27.3) | 1435 (29.8) | 887 (25.1) |
| ≥75 years | 11,765 (25.6) | 3138 (35.5) | 2111 (20.2) | 1089 (9.3) | 3.438 (53.5) | 1489 (31.0) | 493 (13.9) |
| Female, n (%) | 14,803 (32.3) | – | – | – | – | – | – |
| Ethnicity, n (%) | |||||||
| Immigrants/Descendants | 3540 (7.7) | 1395 (15.8) | 755 (7.2) | 479 (4.1) | 545 (8.5) | 233 (4.8) | 125 (3.5) |
| Income level, n (%) | |||||||
| Low | 15,261 (33.3) | – | – | – | – | – | – |
| Middle | 15,260 (33.3) | – | – | – | – | – | – |
| High | 15,260 (33.3) | – | – | – | – | – | – |
| Missing | 93 (0.1) | – | – | – | – | – | – |
| Educational level, n (%) | |||||||
| Low | 17,129 (37.3) | 4190 (47.5) | 3684 (35.3) | 2155 (18.4) | 4163 (64.7) | 2074 (43.1) | 833 (23.5) |
| Middle | 19,203 (41.9) | 3539 (40.1) | 5201 (49.8) | 5551 (47.4) | 1551 (24.1) | 1874 (39.0) | 1442 (40.7) |
| High | 8109 (17.7) | 660 (7.5) | 1301 (12.4) | 3844 (32.8) | 318 (4.9) | 746 (15.5) | 1225 (34.6) |
| Missing | 1433 (3.1) | 440 (5.0) | 264 (2.5) | 170 (1.5) | 400 (6.2) | 116 (2.4) | 40 (1.1) |
| Civil status, n (%) | |||||||
| Single living | 15,210 (33.2) | 3764 (42,6) | 2780 (26.6) | 1619 (13.8) | 4202 (65.3) | 2076 (43.2) | 736 (20.8) |
| Somatic comorbidity (CCI), n (%) | |||||||
| None (0 points) | 3200 (7.0) | 454 (5.1) | 676 (6.5) | 930 (7.9) | 368 (5.7) | 394 (8.2) | 370 (10.5) |
| Moderate (1–2 points) | 34,899 (76.1) | 6443 (73.0) | 8112 (77.6) | 9632 (82.2) | 4425 (68.8) | 3484 (72.4) | 2721 (76.9) |
| High (>2 points) | 7775 (16.9) | 1932 (21.9) | 1662 (15.9) | 1158 (9.9) | 1639 (25.5) | 932 (19.4) | 449 (12.7) |
| Psychiatric comorbidity, n (%) | |||||||
| Current (<90 days) | 6530 (14.2) | 1226 (13.9) | 1117 (10.7) | 808 (6.9) | 1724 (26.8) | 1138 (23.7) | 504 (14.2) |
| Recent (90–365 days) | 2874 (6.2) | 539 (6.1) | 538 (5.1) | 498 (4.2) | 610 (9.5) | 428 (8.9) | 257 (7.3) |
| Past (>365 days) | 9049 (19.7) | 1879 (21.3) | 1868 (17.9) | 1810 (15.4) | 1531 (23.8) | 1102 (22.9) | 841 (23.8) |
| None | 27,421 (60.0) | 5185 (58.7) | 6927 (66.3) | 8604 (73.4) | 2567 (39.9) | 2142 (44.5) | 1938 (54.7) |
| Prior treatment, n (%) | |||||||
| Antiplatelet | 16,441 (35.8) | 3186 (36.1) | 3558 (34.0) | 3635 (31.0) | 2889 (44.9) | 1934 (40.2) | 1215 (34.3) |
| Statin | 14,572 (31.8) | 3103 (35.1) | 3079 (29.5) | 2993 (25.5) | 2725 (42.4) | 1638 (34.1) | 1013 (28.6) |
| Percutaneous coronary intervention, n (%) | 19,297 (42.1) | 3685 (41.7) | 4811 (46.0) | 5821 (49.7) | 1927 (30.0) | 1675 (34.8) | 1339 (37.8) |