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. 2022 Jul 29;37(8):849–870. doi: 10.1007/s10654-022-00896-z

Table 4.

Description of the study population with review A status (with a total patient population of 5298) by cohort until April 01, 2022

Variable N1 Statistic HAP, N = 544 POP, N = 2346 SÜP, N = 1837
Age (numeric) 4727 Median (IQR) 57 (47, 65) 46 (31, 57) 56 (42, 68)
Age (categorical) 4727
 < 18 n (%) 0 (0%) 0 (0%) 50 (2.7%)
 18–29 n (%) 33 (6.1%) 501 (21%) 138 (7.5%)
 30–39 n (%) 51 (9.4%) 446 (19%) 205 (11%)
 40–49 n (%) 83 (15%) 360 (15%) 280 (15%)
 50–59 n (%) 156 (29%) 608 (26%) 368 (20%)
 60–69 n (%) 128 (24%) 260 (11%) 379 (21%)
 70–79 n (%) 69 (13%) 140 (6.0%) 255 (14%)
 80+ n (%) 24 (4.4%) 31 (1.3%) 162 (8.8%)
Gender 4726
 Female n (%) 174 (32%) 1305 (56%) 723 (39%)
 Male n (%) 370 (68%) 1040 (44%) 1114 (61%)
 Non-binary n (%) 0 (0%) 0 (0%) 0 (0%)
 Missing or review A pending n 0 1 0
Smoking (past or current smoker) 3867
 Yes n (%) 28 (6.8%) 1068 (49%) 128 (9.9%)
 No n (%) 381 (93%) 1100 (51%) 1162 (90%)
 Missing or review A pending n 135 178 547
Alcohol 2433
 Never n (%) 0 (NA%) 183 (13%) 516 (50%)
 Up to 4 times monthly n (%) 0 (NA%) 676 (48%) 377 (36%)
 Multiple times weekly n (%) 0 (NA%) 536 (38%) 145 (14%)
 Missing or review A pending n 544 951 799
Obesity at inclusion (BMI ≥ 30 kg/m2) 4169
 No n (%) 311 (65%) 1758 (76%) 900 (66%)
 Yes n (%) 167 (35%) 566 (24%) 467 (34%)
 Missing or review A pending n 66 22 470
SARS-CoV-2 vaccined 3581
 Yes n (%) 93 (19%) 1189 (55%) 459 (49%)
 No n (%) 393 (81%) 965 (45%) 482 (51%)
 Missing or review A pending n 58 192 896
In-patient ever 4161
 Yes n (%) 544 (100%) 170 (7.3%) 1120 (88%)
 No n (%) 0 (0%) 2172 (93%) 155 (12%)
 Missing or review A pending n 0 4 562
Intensive stay ever 3997
 Yes n (%) 208 (38%) 36 (1.5%) 367 (33%)
 No n (%) 336 (62%) 2301 (98%) 749 (67%)
 Missing or review A pending n 0 9 721
Covid-associated oxygenation 4619
 Invasive/non-invasive ventilation n (%) 141 (26%) 17 (0.7%) 299 (17%)
 O2-therapy only n (%) 260 (48%) 93 (4.0%) 746 (43%)
 No assistance n (%) 142 (26%) 2222 (95%) 699 (40%)
 Missing or review A pending n 1 14 93
Extracorporeal membrane oxygenation (ECMO) 4047
 Yes n (%) 60 (13%) 1 (<0.1%) 47 (3.8%)
 No n (%) 417 (87%) 2334 (100%) 1188 (96%)
 Missing or review A pending n 67 11 602
Chronic cardiovascular disease 3842
 Yes n (%) 269 (50%) 601 (29%) 622 (50%)
 No n (%) 265 (50%) 1456 (71%) 629 (50%)
 Missing or review A pending n 10 289 586
Chronic lung disease 4013
 Yes n (%) 109 (21%) 425 (19%) 235 (19%)
 No n (%) 417 (79%) 1822 (81%) 1005 (81%)
 Missing or review A pending n 18 99 597
Chronic kidney disease 4088
 Yes n (%) 88 (17%) 8 (0.3%) 142 (12%)
 No n (%) 436 (83%) 2323 (100%) 1091 (88%)
 Missing or review A pending n 20 15 604
Chronic liver disease 3722
 Yes n (%) 44 (8.4%) 181 (9.2%) 84 (6.8%)
 No n (%) 480 (92%) 1788 (91%) 1145 (93%)
 Missing or Review A pending n 20 377 608
Rheumatological/immunological disease 4053
 Yes n (%) 32 (6.1%) 219 (9.5%) 60 (4.9%)
 No n (%) 492 (94%) 2075 (90%) 1175 (95%)
 Missing or review A pending n 20 52 602
Diabetes mellitus 4001
 Yes n (%) 110 (21%) 101 (4.5%) 266 (21%)
 No n (%) 418 (79%) 2129 (95%) 977 (79%)
 Missing or review A pending n 16 116 594
Solid tumor disease 4092
 Yes n (%) 57 (11%) 39 (1.7%) 150 (12%)
 No n (%) 478 (89%) 2294 (98%) 1074 (88%)
 Missing or review A pending n 9 13 613
Haematological-oncological disease 4074
 Yes n (%) 29 (5.5%) 7 (0.3%) 63 (5.2%)
 No n (%) 498 (94%) 2323 (100%) 1154 (95%)
 Missing or review A pending n 17 16 620
HIV infection 3948
 Yes n (%) 3 (0.6%) 2 (<0.1%) 17 (1.5%)
 No n (%) 473 (99%) 2336 (100%) 1117 (99%)
 Missing or review A pending n 68 8 703
Chronic neurological or psychiatric disease 3997
 Yes n (%) 81 (15%) 570 (25%) 159 (13%)
 No n (%) 451 (85%) 1690 (75%) 1046 (87%)
 Missing or review A pending n 12 86 632
History of organ transplantation 4106
 Yes n (%) 56 (10%) 8 (0.3%) 60 (4.9%)
 No n (%) 479 (90%) 2327 (100%) 1176 (95%)
 Missing or review A pending n 9 11 601
General symptoms 3711
 Yes n (%) 246 (59%) 1964 (95%) 979 (80%)
 No n (%) 172 (41%) 110 (5.3%) 240 (20%)
 Missing or Review A pending n 126 272 618
Respiratory symptoms 3726
 Yes n (%) 253 (61%) 1974 (95%) 979 (80%)
 No n (%) 165 (39%) 110 (5.3%) 245 (20%)
 Missing or review A pending n 126 262 613
Gastrointestinal symptoms 2626
 Yes n (%) 93 (22%) 900 (89%) 448 (37%)
 No n (%) 325 (78%) 110 (11%) 750 (63%)
 Missing or review A pending n 126 1336 639
Neurological symptoms 2829
 Yes n (%) 94 (22%) 1094 (91%) 424 (35%)
 No n (%) 324 (78%) 110 (9.1%) 783 (65%)
Missing or review A pending n 126 1142 630
 Other symptoms 2750
 Yes n (%) 93 (22%) 1019 (90%) 387 (32%)
 No n (%) 325 (78%) 110 (9.7%) 816 (68%)
 Missing or review A pending n 126 1217 634
Asymptomatic 4012
 Yes n (%) 4 (0.8%) 110 (4.9%) 62 (5.0%)
 No n (%) 520 (99%) 2134 (95%) 1182 (95%)
 Missing or review A pending n 20 102 593
Early outcome 1800
 Discharged home/ambulatory care n (%) 413 (79%) 0 (NA%) 834 (65%)
 Unknown or no change yet n (%) 0 (0%) 0 (NA%) 185 (14%)
 Transferred to or from another facility n (%) 47 (9.0%) 0 (NA%) 107 (8.4%)
 Deceased n (%) 62 (12%) 0 (NA%) 152 (12%)
 Missing or review A pending n 22 2346 559
3M follow-up conducted 1258
 Yes n (%) 162 (69%) 0 (NA%) 534 (52%)
 No n (%) 74 (31%) 0 (NA%) 488 (48%)
 Missing or review A pending n 308 2346 815
6M follow-up conducted 182
 Yes n (%) 113 (62%) 0 (NA%) 0 (NA%)
 No n (%) 69 (38%) 0 (NA%) 0 (NA%)
 Missing or review A pending n 362 2346 1837
12M follow-up conducted 694
 Yes n (%) 37 (35%) 0 (NA%) 219 (37%)
 No n (%) 68 (65%) 0 (NA%) 370 (63%)
 Missing or review A pending n 439 2346 1248

SUEP, cross-sectoral platform; HAP, high-resolution platform; POP, population-based platform

Baseline characteristics for the SUEP and the HAP correspond to the baseline visit during acute infection, for the POP to the first baseline visit 6-12 months after infection