Table 2. Characteristics of patients admitted first time with acute coronary syndrome (ACS) and a reference population in Denmark.
According to educational status at study entry.
| ACS patients | Reference population* | |||||||
|---|---|---|---|---|---|---|---|---|
| Educational status | Educational status | |||||||
| N | Low | Middle | High | N | Low | Middle | High | |
| All (Number) | 83 062 | 39974 | 33417 | 9671 | 83 416 | 35134 | 34641 | 13641 |
| Baseline characteristics | ||||||||
| More than 2 comorbidities (%) | 56 736 | 42.2 | 31.2 | 8.8 | 44 170 | 37.8 | 31.3 | 11.4 |
| User of statins (%) | 20 351 | 24.5 | 24.7 | 23.6 | 10 820 | 13.8 | 13.0 | 10.7 |
| Previous depression (%) | 20 139 | 26.1 | 22.4 | 22.9 | 14 492 | 21.0 | 17.0 | 16.4 |
| Follow-up characteristics | ||||||||
| Incident depression** (n) | 16 571 | 8571 | 6248 | 1752 | 11 144 | 5563 | 4028 | 1553 |
| Person year at risk for depression | 55.0 | 51.0 | 15.0 | 58.9 | 61.6 | 24.4 | ||
| Depression rate/ 1000 py | 155.9 | 122.5 | 117.1 | 94.4 | 65.4 | 63.6 | ||
| Death | ||||||||
| Death 0–30 days after study entry (n) | 6676 | 3967 | 2128 | 581 | 1136 | 646 | 378 | 112 |
| Person year at risk for death | 3.0 | 2.6 | 0.8 | 2.8 | 2.8 | 1.1 | ||
| 30 days mortality rate/ 1000 py | 1304.2 | 815.7 | 767.9 | 227.5 | 134.1 | 100.8 | ||
| Death 0–1 year after study entry (n) | 11 909 | 7079 | 3850 | 980 | 3032 | 1736 | 1015 | 281 |
| Person year at risk for death | 34.3 | 30.4 | 8.9 | 34.0 | 33.9 | 13.4 | ||
| 1 year mortality rate/ 1000 py | 206.2 | 126.8 | 110.6 | 51.1 | 29.9 | 20.9 | ||
| Death 0–12 year after study entry (n) | 29 583 | 7328 | 9894 | 2361 | 19 105 | 10732 | 6441 | 1932 |
| Person year at risk for death | 214.9 | 199.9 | 59.2 | 225.9 | 234.7 | 93.2 | ||
| Mortality rate/ 1000 py | 80.6 | 49.5 | 39.9 | 47.5 | 27.4 | 20.7 | ||
* matched on gender, age, and municipality on time of ACS;
** depression diagnosed up to 2 years after study entry.