Table 1 General characteristics of the study population in Swiss hospitals
| Â | Total study population | 14-days mortality (%) |
|---|---|---|
Total population | 1,152,506 | 16,998 (1.5) |
Male | 536,763 | 9662 (1.8) |
Female | 615,743 | 7567 (1.2) |
Age groups | ||
 0–19 years | 152,887 | 558 (0.4) |
 20–29 years | 85,498 | 79 (0.1) |
 30–39 years | 125,141 | 156 (0.1) |
 40–49 years | 99,401 | 373 (0.4) |
 50–59 years | 139,695 | 1159 (0.8) |
 60–69 years | 163,193 | 2270 (1.4) |
 70–79 years | 192,614 | 4121 (2.1) |
 80–89 years | 156,026 | 5803 (3.7) |
 90+ years | 38,051 | 2479 (6.5) |
Hospital types | ||
 University (level 1) | 222,552 | 3638 (1.6) |
 Tertiary care (level 2) | 688,637 | 10,591 (1.5) |
 Large basic (level 3) | 105,809 | 1194 (1.1) |
 Medium basic (level 4) | 118,705 | 1191 (1.0) |
 Small basic (level 5) | 16,803 | 384 (2.3) |
Length of hospital stay (mean (SD)), days | 6.2 (8.5) | – |
Elixhauser index (mean (SD)) | 1.41 (1.81) | 3.14 (2.06) |
Elixhauser index (Swiss comorbidity weighting score) | ||
  < 0 | 197,262 | 630 (0.3) |
  = 0 | 532,629 | 1694 (0.3) |
  > 0 to < 5 | 76,495 | 754 (1.0) |
  ≥ 5 | 345,501 | 13,641 (3.9) |
Individual (PCCL) | ||
 No clinical complexity (0) | 705,437 | 3759 (0.5) |
 Mild clinical complexity (1) | 16,933 | 65 (0.4) |
 Moderate clinical complexity (2) | 130,866 | 1346 (1.0) |
 Severe clinical complexity (3) | 174,576 | 3915 (2.2) |
 Very severe clinical complexity (4) | 124,694 | 7913 (6.3) |
Days of admission | ||
 Mondays | 216,990 | 2890 (1.3) |
 Tuesdays | 204,425 | 2700 (1.3) |
 Wednesdays | 199,349 | 2561 (1.3) |
 Thursdays | 184,595 | 2538 (1.4) |
 Fridays | 161,107 | 2591 (1.6) |
 Saturdays | 86,680 | 1844 (2.1) |
 Sundays | 99,360 | 1874 (1.9) |
Admission during weekdays | ||
 Weekdays | 966,466 | 13,530 (1.4) |
 Weekends | 186,040 | 3718 (2.0) |