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Table 2 Binary logistic regression analysis to determine the factors associated with the seroprevalence of SARS-CoV-2 IgG after the second dose of vaccine in hospital staff members

From: Seroprevalence of anti-SARS-CoV-2 IgG antibodies pre- and post-COVID-19 vaccination in staff members of Bandar Abbas Children’s Hospital

Independent variables

cOR (95% CI)

P-value

aOR (95% CI)

P-value

Age (years)

1.041 (1.008; 1.076)

p < 0.05

1.062 (1.021; 1.105)

p < 0.05

Sex

    

 Male

1.457 (0.618; 3.435)

p > 0.05

1.134 (0.346; 3.716)

p > 0.05

 Female

1.000

 

1.000

 

BMI (kg/m2)

0.998 (0.981; 1.015)

p > 0.05

0.997 (0.979; 1.014)

p > 0.05

Occupation

    

 HCW

0.520 (0.185; 1.458)

p > 0.05

0.501 (0.156; 1.604)

p > 0.05

 Non-HCW

1.000

 

1.000

 

Workplace

    

 COVID wards

1.530 (0.676; 3.464)

p > 0.05

2.774 (0.984; 7.823)

p > 0.05

 Non-COVID wards

1.000

 

1.000

 

Underlying disease

0.826 (0.244; 2.787)

p > 0.05

0.405 (0.094; 1.734)

p > 0.05

Contact with infected family member

0.542 (0.319; 0.921)

p < 0.05

0.568 (0.302; 1.069)

p > 0.05

Interval between two doses (months)

0.640 (0.490; 0.835)

p < 0.05

0.595 (0.434; 0.816)

p < 0.05

Vaccine type

    

 Vector

1.000

 

1.000

 

 Inactivated virus

1.553 (0.865; 2.788)

p > 0.05

1.090 (0.538; 2.210)

p > 0.05

History of COVID-19 infection

0.736 (0.247; 2.194)

p > 0.05

1.251 (0.369; 4.234)

p > 0.05

  1. Abbreviations: aOR, adjusted odds ratio; BMI, body mass index; CI, confidence interval; cOR, crude odds ratio; COVID-19, coronavirus disease 2019; HCW, healthcare worker