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Table 1 Participant characteristics

From: Association of working shifts, inside and outside of healthcare, with severe COVID−19: an observational study

Characteristic All (n = 235,685) Severe covid-19
(hospitalisation or death)
Yes
(n = 580)
No
(n = 235,105)
Age at test (years) 63·8 (7·11) 63·6 (7·70) 63·8 (7·10)
Body mass index (kg/m2) 27·2 (4·68) 28·7 (5·34) 27·2 (4·68)
Townsend score -1·39 (2·96) -0·47 (3·39) -1·39 (2·96)
Sex
 Female 123,127 (52·2) 275 (47·4) 122,852 (52·3)
Ethnicity
 White 226,436 (96·1) 518 (89·3) 225,918 (96·1)
 South Asian 4345 (1·8) 30 (5·2) 4315 (1·8)
 Black 4904 (2·1) 32 (5·5) 4872 (2·1)
Smoking status
 Never 135,710 (57·6) 300 (51·7) 135,410 (57·6)
 Previous 75,767 (32·2) 221 (38·1) 75,546 (32·1)
 Current 24,208 (10·3) 59 (10·1) 24,149 (10·3)
Past or current cancer
 Yes 13,957 (5·9) 39 (6·7) 13,918 (5·9)
Co-morbidities
 Yes 162,290 (68·9) 438 (75·5) 161,852 (68·9)
Shift or health worker
 Neither 193,134 (81·5) 375 (64·7) 192,759 (82.0)
 Shift worker 38,738 (16·9) 183 (31.6) 38,555 (16·4)
 Health worker 3193 (1·4) 13 (2·2) 3180 (1·4)
 Both 620 (0·3) 9 (1·6) 611 (0·3)
  1. Values reported are mean (SD) or N (%)
  2. Co-morbidities: yes/no; one or more medical condition(s): i.e. cardiovascular, respiratory, renal, neurology, musculoskeletal, haematology, gynaecology, immunology, infection
  3. Townsend score: a composite measure of deprivation based on unemployment, non-car ownership, non-home ownership, and household overcrowding; negative values represent less deprivation