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Table 4 Multiple regression model of factors associated with SARS-CoV-2 infection in HCW. (Model also adjusted by epidemiological week and hospital area)

From: A case–control study of factors associated with SARS-CoV-2 infection among healthcare workers in Colombia

Characteristics Adjusted OR (95% CI) P value
Gender
Female, not taking hormonal contraceptives Ref.  
 Female, taking hormonal contraceptives 2.72 (0.91–8.13) 0.07
Male 4.13 (1.70–10.05)  < 0.01
Highest educational level
Non-college education Ref.  
College graduate 0.06 (0.01–0.53) 0.01
Postgraduate education 0.05 (0.005–0.47)  < 0.01
Number of members in the household
≤1 Ref.  
  > 2 0.47 (0.21–1.04) 0.06
Feeling scared or nervous
Never Ref.  
Anytime 0.45 (0.22–0.91) 0.03
Alcohol intake
Never Ref.  
Monthly intake 0.50 (0.23–1.07) 0.08
Weekly intake 0.58 (0.16–2.16) 0.42
Occupation
Nursing Assistant Ref.  
Nurse 11.24 (1.05–119.63) 0.04
Physician 8.36 (0.81–85.36) 0.07
Other healthcare professionalsa 11.44 (0.88–148.70) 0.06
Technicians 2.49 (0.71–8.67) 0.15
Administrative Staff 3.99 (0.91–17.66) 0.07
Use of High-performance filtering mask
Always Ref.  
Not always or another face mask 2.27 (1.02–5.05) 0.04
Always wear caps, face shield/goggles or gloves
Yes, all three of them Ref.  
Yes, only two 0.69 (0.25–1.96) 0.49
Yes, only one 0.35 (0.13–0.98) 0.05
None 0.10 (0.02–0.41)  < 0.01
Used PPE properly
Yes Ref.  
No 4.82 (1.18–19.65) 0.03
Type of facemask outside of work
Surgical mask Ref.  
High-performance or fabric plus surgical mask 0.27 (0.09–0.80) 0.02
Only fabric mask 0.84 (0.32–2.20) 0.73
Training PPE support
None Ref.  
  < 2 h 2.73 (0.83–8.92) 0.10
≥ 2 h 3.42 (0.97–12.01) 0.06
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