Table 2.
Seasonal average number (#) and incidence rates (IR) of selected hospitalized outcomes per 100,000 population by age group for the total study population, Denmark (from 2010/11–2017/18) and England (from 2010/11–2018/19).
| Age group: | 18–34 yrs | 35–49 yrs | 50–64 yrs | 65–74 yrs | ≥75 yrs | All ages | |
|---|---|---|---|---|---|---|---|
| Denmark | |||||||
| Any hospitalization* | # | 1414 | 3350 | 9659 | 12385 | 20177 | 46984 |
| IR | 119 (113; 125) | 288 (282; 294) | 885 (872; 898) | 2037 (1995; 2080) | 4773 (4630; 4919) | 1051 (1021; 1081) | |
| Respiratory hospitalizations | # | 961 | 1741 | 4596 | 6432 | 11754 | 25484 |
| IR | 81 (75; 87) | 150 (143; 157) | 421 (406; 437) | 1058 (1002; 1117) | 2780 (2603; 2970) | 570 (535; 606) | |
| Influenza + pneumonia | # | 616 | 1137 | 2709 | 3824 | 8109 | 16395 |
| IR | 52 (45; 60) | 98 (91; 105) | 248 (238; 258) | 629 (586; 675) | 1918 (1768; 2081) | 367 (340; 395) | |
| Influenza | # | 97 | 118 | 164 | 165 | 260 | 804 |
| IR | 8.2 (5.5; 12) | 10 (7; 14) | 15 (9; 24) | 27 (14; 52) | 62 (28; 136) | 18 (10; 31) | |
| Cardiovascular hospitalizations | # | 203 | 1095 | 3410 | 3993 | 6320 | 15022 |
| IR | 17 (16; 18) | 94 (90; 98) | 312 (307; 318) | 657 (633; 681) | 1495 (1417; 1577) | 336 (329; 343) | |
| Diabetic hospitalizations | # | 154 | 126 | 155 | 154 | 200 | 789 |
| IR | 13 (12; 14) | 11 (10; 12) | 14 (14; 15) | 25 (24; 26) | 47 (45; 50) | 18 (17; 18) | |
| England | |||||||
| Any hospitalization* | # | 1033 | 2401 | 6647 | 8215 | 36200 | 17904 |
| IR | 49 (45; 52) | 124 (118; 131) | 405 (386; 425) | 1013 (964; 1065) | 2545 (2337; 2771) | 502 (467; 539) | |
| Respiratory hospitalizations | # | 704 | 1282 | 3227 | 4404 | 19140 | 9523 |
| IR | 33 (30; 37) | 66 (61; 72) | 197 (182; 213) | 543 (495; 596) | 1354 (1172; 1564) | 265 (236; 298) | |
| Influenza + pneumonia | # | 348 | 702 | 1617 | 2356 | 11672 | 6649 |
| IR | 16 (14; 20) | 36 (32; 42) | 99 (85; 114) | 291 (246; 343) | 945 (784; 1140) | 162 (136; 192) | |
| Influenza | # | 66 | 89 | 151 | 139 | 688 | 241 |
| IR | 3.1 (1.7; 5.9) | 4.6 (2.5; 8.7) | 9.2 (4.6; 18) | 17 (8; 38) | 34 (14; 85) | 9.5 (4.6; 20) | |
| Cardiovascular hospitalizations | # | 202 | 1032 | 3367 | 3874 | 17173 | 8698 |
| IR | 9.5 (8.8; 10) | 53 (51; 56) | 205 (199; 212) | 478 (472; 484) | 1236 (1202; 1272) | 238 (231; 245) | |
| Diabetic hospitalizations | # | 131 | 111 | 149 | 125 | 804 | 288 |
| IR | 6 (6; 7) | 6 (5; 6) | 9 (8; 10) | 15 (14; 16) | 41 (39; 43) | 11 (11; 12) | |
95% confidence intervals (in brackets) from the Poisson distribution. *Any hospitalization for an outcome included in our analysis.