Table 1.
Study population of adults, number of sepsis cases, and incidence rates of sepsis in Sweden (1997–2018).
| Total population | Events of sepsis | Incidence rate per 10 000 person years | |||||
|---|---|---|---|---|---|---|---|
| No. | % | No. | % | IR | 95% CI | ||
| Total population | 6 746 010 | 161 558 | 13.9 | 13.8 | 14.0 | ||
| Sex | |||||||
| Men | 3 294 949 | 48.8 | 90 439 | 56.0 | 15.7 | 15.6 | 15.8 |
| Women | 3 451 061 | 51.2 | 71 119 | 44.0 | 12.1 | 12.0 | 12.2 |
| Age at baseline (years) | |||||||
| 18–49 | 3 706 719 | 54.9 | 29 605 | 18.3 | 4.1 | 4.0 | 4.1 |
| 50–59 | 1 113 444 | 16.5 | 31 318 | 19.4 | 15.1 | 14.9 | 15.3 |
| 60–69 | 783 999 | 11.6 | 39 152 | 24.2 | 30.9 | 30.6 | 31.2 |
| 70–79 | 716 588 | 10.6 | 44 823 | 27.7 | 55.0 | 54.5 | 55.5 |
| ≥ 80 | 425 260 | 6.3 | 16 660 | 10.3 | 71.3 | 70.2 | 72.4 |
| Educational level (years) | |||||||
| ≤ 9 | 2 170 482 | 32.2 | 76 817 | 47.5 | 22.8 | 22.6 | 22.9 |
| 10–12 | 2 883 602 | 42.7 | 54 959 | 34.0 | 10.3 | 10.2 | 10.4 |
| >12 | 1 691 926 | 25.1 | 29 782 | 18.4 | 10.2 | 10.1 | 10.3 |
| Family income (quartile) | |||||||
| Low | 1 681 157 | 24.9 | 31 655 | 19.6 | 11.2 | 11.0 | 11.3 |
| Middle | 3 375 078 | 50.0 | 87 867 | 54.4 | 15.4 | 15.3 | 15.5 |
| High | 1 689 775 | 25.0 | 42 036 | 26.0 | 13.6 | 13.5 | 13.8 |
| Region of residence | |||||||
| Large cities | 3 311 976 | 49.1 | 84 303 | 52.2 | 14.8 | 14.7 | 14.9 |
| Southern Sweden | 2 296 973 | 34.0 | 50 714 | 31.4 | 12.8 | 12.7 | 12.9 |
| Northern Sweden | 1 137 061 | 16.9 | 26 541 | 16.4 | 13.6 | 13.4 | 13.8 |
| Marital status | |||||||
| Married/Cohabiting | 3 144 475 | 46.6 | 90 462 | 56.0 | 16.5 | 16.4 | 16.6 |
| Unmarried/Divorced/Widowed | 3 601 535 | 53.4 | 71 096 | 44.0 | 11.6 | 11.5 | 11.7 |
| Country of origin (immigration status) | |||||||
| Sweden (born in) | 5 979 590 | 88.6 | 145 658 | 90.2 | 14.1 | 14.0 | 14.2 |
| Eastern Europe | 187 058 | 2.8 | 3782 | 2.3 | 11.6 | 11.2 | 12.0 |
| Western countries | 336 902 | 5.0 | 9276 | 5.7 | 17.4 | 17.1 | 17.8 |
| Middle East/North Africa | 106 465 | 1.6 | 1251 | 0.8 | 6.5 | 6.1 | 6.8 |
| Africa (excluding North Africa) | 26 851 | 0.4 | 273 | 0.2 | 6.1 | 5.4 | 6.8 |
| Asia (excluding Middle East) and Oceania | 69 731 | 1.0 | 875 | 0.5 | 7.0 | 6.5 | 7.4 |
| Latin America and the Caribbean | 39 413 | 0.6 | 443 | 0.3 | 6.4 | 5.8 | 7.0 |
| Charlson Comorbidity Index | |||||||
| Low (0p) | 6 306 568 | 93.5 | 134 274 | 83.1 | 12.0 | 12.0 | 12.1 |
| Moderate (1–2p) | 438 512 | 6.5 | 27,210 | 16.8 | 61.1 | 60.4 | 61.9 |
| High (>2p) | 930 | 0.0 | 74 | 0.0 | 80.8 | 62.4 | 99.2 |
| Severe mental disorders | |||||||
| No diagnosis | 6 646 796 | 98.5 | 158 660 | 98.2 | 13.9 | 13.8 | 13.9 |
| Diagnosis | 99 214 | 1.5 | 2898 | 1.8 | 16.2 | 15.6 | 16.7 |
IR: Incidence rate (of the first episode of sepsis in the follow-up period); CI: Confidence interval.