| Mortality register | Hospital discharge register |
Patient days | Cases | Rate·1000patient-days−1 | RR (95% CI) | Cases | Rate·1000patient-days−1 | RR (95% CI) |
Subjects | 770000 | 925 | | | 812 | | |
Age yrs | | | | | | | |
35–54 | 50000 | 6 | 0.12 | 1 | 4 | 0.08 | 1 |
55–64 | 110000 | 19 | 0.17 | 1.41 (0.56–3.54) | 16 | 0.14 | 1.79 (0.6–5.35) |
65–74 | 250000 | 167 | 0.67 | 5.60 (2.48–12.65) | 149 | 0.60 | 7.50 (2.78–20.25 |
75–84 | 250000 | 377 | 1.52 | 12.62 (5.63–28.27) | 345 | 1.39 | 17.33 (6.47–46.43 |
≥85 | 110000 | 356 | 3.35 | 27.88 (12.44–62.48) | 298 | 2.79 | 34.84 (12.99–93.43) |
Sex | | | | | | | |
Female | 325000 | 366 | 1.13 | 1 | 343 | 0.11 | 1 |
Male | 445000 | 559 | 1.13 | 1.13 (0.99–1.29) | 469 | 0.11 | 1.01 (0.88–1.16) |
Place of residence | | | | | | | |
Outside Rome | 430000 | 435 | 1.01 | 1 | 372 | 0.86 | 1 |
Rome | 330000 | 490 | 1.46 | 1.45 (1.27–1.65) | 440 | 1.31 | 1.52 (1.32–1.75) |
Education yrs | | | | | | | |
>8 | 62000 | 77 | 1.25 | 1 | 77 | 1.25 | 1 |
5–8 | 540000 | 628 | 1.17 | 0.93 (0.74–1.18) | 557 | 1.03 | 0.83 (0.65–1.05) |
<5 | 95000 | 121 | 1.28 | 1.02 (0.77–1.36) | 94 | 0.99 | 0.79 (0.59–1.07) |
Missing data | 73000 | 99 | | | | | |
Admission ward | | 925 | | | | | |
Appropriate# | 170000 | 152 | 0.90 | 1 | 123 | 0.72 | 1 |
Acceptable¶ | 530000 | 673 | 1.27 | 1.43 (1.20–1.70) | 597 | 1.13 | 1.57 (1.29–1.90) |
Not appropriate | 65000 | 100 | 1.54 | 1.73 (1.34–2.22) | 92 | 1.41 | 1.97 (1.50–2.58) |
Follow-up time days | | | | | | | |
0–6 | 160000 | 315 | 2.03 | 1 | 318 | 2.05 | 1 |
7–13 | 180000 | 228 | 1.27 | 0.63 (0.53–0.74) | 210 | 1.17 | 0.57 (0.48–0.68) |
14–20 | 180000 | 179 | 1.01 | 0.50 (0.41–0.60) | 145 | 0.81 | 0.40 (0.33–0.48) |
21–30 | 250000 | 203 | 0.80 | 0.40 (0.33–0.47) | 139 | 0.55 | 0.26 (0.22–0.33) |
Comorbidities+ | | | | | | | |
0 | 490000 | 468 | 1.00 | 1 | 420 | 0.85 | 1 |
1 | 140000 | 170 | 1.26 | 1.32 (1.11–1.57) | 152 | 1.12 | 1.32 (1.09–1.58) |
2 | 100000 | 183 | 1.84 | 1.93 (1.62–2.29) | 153 | 1.53 | 1.79 (1.49–2.16) |
≥3 | 39000 | 104 | 2.68 | 2.81 (2.27–3.47) | 87 | 2.23 | 2.61 (2.07–3.29) |
Hospitalisation in the last 2 yrs | | | | | | | |
0 | 400000 | 441 | 1.10 | 1 | 408 | 1.01 | 1 |
1 | 185000 | 220 | 1.23 | 1.12 (0.95–1.32) | 188 | 1.05 | 1.03 (0.87–1.23) |
2 | 185000 | 264 | 1.44 | 1.32 (1.13–1.54) | 216 | 1.18 | 1.16 (0.99–1.37) |
Hospitalisation in the last 2 yrs with respiratory failure | | | | | | | |
0 | 730000 | 854 | 1.17 | 1 | 752 | 1.03 | 1 |
1 | 29000 | 42 | 1.44 | 1.23 (0.9–1.67) | 35 | 1.20 | 1.16 (0.83–1.63) |
2 | 8500 | 29 | 3.39 | 2.89 (2.00–4.18) | 25 | 2.90 | 2.81 (1.89–4.19) |