Chapter 2 44 Table 1. Characteristics of COVID-19 cases and hospitalisations in Amsterdam, the Netherlands, 29 February-31 May 2020 Total (N=2326) Hospitalised (n=596) Not hospitalised/ unknown (n=1730) Characteristic n % n % n % Age in years, median [IQR] 57 [37-74] 64 [51-73] 54 [34-74] Sex Female 1346 57.9 230 38.6 1116 64.5 Male 965 41.5 361 60.6 604 34.9 Unknown 15 0.6 5 0.8 10 0.6 Health care worker (HCW) No 1108 47.6 383 64.3 725 41.9 Yes 814 35.0 47 7.9 767 44.3 HCW not in a long-term care facility/ unknown location 500 61.4 36 76.6 464 60.5 HCW in a long-term care facility 314 38.6 11 23.4 303 39.5 Unknown 404 17.3 166 27.8 238 13.8 Resident of a long-term care facility No/unknown 1867 80.3 579 97.2 1299 74.5 Yes 459 19.7 17 2.9 445 25.5 City district Centre 162 7.0 37 6.2 141 7.0 New-West 433 18.6 130 21.8 360 18.0 North 268 11.5 82 13.8 239 12.0 East 377 16.2 62 10.4 330 16.5 West 341 14.7 86 14.4 293 14.6 South 350 15.1 77 12.9 312 15.6 South-East 355 15.3 113 19.0 320 16.0 Unknown 40 1.7 9 1.5 7 0.4 Died No/unknown 2039 87.7 496 83.2 1543 89.2 Yes 287 12.3 100 16.8 187 10.8 Abbreviations: HCW health care worker, IQR interquartile range Of the 2326 cases, 2002 (86.1%) could be matched to the registration database, including 526/596 hospitalisations (88.2%) and 235/287 (81.8%) deaths (Supplementary Figure S2, Supplementary Table S1). Table 2 shows hospitalisation DSR per 100,000 population by city district and migration background in the matched population. Hospitalisation DSR were almost two-fold higher in individuals living in peripheral city districts compared to central districts (RR=1.82, 95%CI=1.65-1.99), with 36.87 additional hospitalisations per 100.000 population (RD=36.87, 95%CI=25.79-47.96). The difference between peripheral and central city districts became increasingly apparent over time (Figure S3). Further stratification by individual city district is presented in Supplementary Table S2.
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