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Table 1 Clinical and demographic characteristics of LTCF employees participating in the seroprevalence study

From: Occupational and community risk of SARS-CoV-2 infection among employees of a long-term care facility: an observational study

  All participants, no (%) Seropositive, no (%) Seronegative, no (%) P valuea
  176 30 (17) 146 (83)  
Demographics     
Age, mean (SD) 45 (11) 42 (12) 46 (11) .121
Gender, female n (%) 136/175 (78) 22 (73) 114 (79) .630
Community exposure     
 Transportation 163    .802
  Private (include biking) 130 22 (77) 108 (80)  
  Public 33 6 (21) 27 (20)  
 No. of household member, med (IQR) 3 (1–4) 3 (1–4) 3 (1–4)  
 Close contact in the community with a person positive for SARS-CoV-2 within the prior 20 days 29/162 (18) 8 (28) 21 (16) .179
Occupational exposure     
 Healthcare workers 141 (80) 25 (83) 116 (79) .803
 Professional category     
  Nurses 48 7 (23) 41 (28)  
  Physicians 9 5 (17) 4 (3)  
  Nursing assistants 61 11 (37) 50 (34)  
  Allied health professional 23 2 (7) 21 (14)  
  Office workers 7 2 (7) 5 (3)  
  Hospital cleaners 28 3 (10) 25 (17)  
 Work rate (%) 169    .300
  ≤ 80 78 (46) 10 (36) 68 (48)  
  > 80 91 (54) 18 (64) 73 (52)  
 Close contact with a patient positive for SARS-CoV-2 (< 1 m) within the prior 20 days 131/169 (78) 27 (90) 104 (75) .091
 Close contact with a healthcare worker positive for SARS-CoV-2 (< 1 m) within the prior 20 days 127/166 (77) 23 (79) 104 (76) .812
 Aerosol-generating procedures within the prior 20 days 28/133 (21) 4 (16) 24 (22) .595
 Flat sharing with another healthcare worker 9/161 (6) 0 9 (7) .365
 Eating at the hospital cafeteria 124/170 (73) 21 (72) 103 (73) 1
 Carpooling with healthcare workers 26/160 (16) 2 (7) 24 (18) .257
IPCb measures     
 In case of contact with COVID-19–positive patients     
  Use of a respirator (FFP2/N95) 14/163 (9) 2 (7) 12 (9) 1
  Use of a surgical mask 117/169 (69) 25 (83) 92 (66) .081
Clinical data     
 Presence of symptoms within the prior 20 day 127/167 (76) 27 (93) 100 (73) .017
  Cough 40/164 (24) 14 (48) 26 (19)  
  Fever 36/163 (22) 15 (52) 21 (16)  
  Headache 85/164 (52) 21 (72) 64 (47)  
  Cold 55/164 (34) 11 (38) 44 (33)  
  Sore throat 59/164 (36) 10 (34) 49 (36)  
  Myalgia 56/163 (34) 15 (52) 41 (31)  
 Underwent PCR testingc 56/138 (41) 17 (61) 39 (36) .018
  Positive 15/21 (71) 13 (81) 2 (40)  
 Requiring hospitalization 1/10 (10) 1 (10) 0  
  1. aFisher’s exact test
  2. bInfection prevention and control
  3. cSelf-reported