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Table 2 Predictors of symptomatic laboratory-confirmed SARS-COV-2 reinfection, Mexico 2020

From: Symptomatic SARS-COV-2 reinfection: healthcare workers and immunosuppressed individuals at high risk

 

RR (95% CI), p

 

Bivariate analysis

Multiple analysis

Gender

 Female

1.0000

  

1.0000

  

 Male

0.9998

(0.9993–1.0004)

0.574

1.0004

(0.9997–1.0009)

0.256

Age group (years)

 20–49

1.0000

  

1.0000

  

 50–59

0.9987

(0.9980–0.9995)

0.001

0.9989

(0.9981–0.9997)

0.006

 60–69

0.9984

(0.9973–0.9996)

0.007

0.9984

(0.9972–0.9996)

0.009

 70 + 

0.9983

(0.9968–0.9999)

0.039

0.9982

(0.9966–0.9999)

0.032

Occupation

 Housewife

1.0000

  

1.0000

  

 Healthcare worker

1.0043

(1.0032–1.0054)

 < 0.001

1.0042

(1.0030–1.0055)

 < 0.001

 Other healthcare-related

1.0026

(1.0013–1.0038)

 < 0.001

1.0025

(1.0012–1.0039)

 < 0.001

 Student

0.9994

(0.9964–1.0025)

0.721

0.9993

(0.9961–1.0024)

0.646

 Other

1.0006

(0.9996–1.0015)

0.227

1.0005

(0.9994–1.0016)

0.337

Disease severity (at primary infection)a

 Mild-moderate

1.0000

  

1.0000

  

 Severe

0.9987

(0.9979–0.9994)

 < 0.001

0.9989

(0.9981–0.9997)

0.007

Personal history of:

 Obesity (BMI 30 or higher)

  No

1.0000

  

1.0000

  

  Yes

0.9996

(0.9988–1.0003)

0.228

0.9997

(0.9989–1.0004)

0.360

 Type 2 diabetes mellitus

  No

1.0000

  

1.0000

  

  Yes

0.9993

(0.9984–1.0001)

0.082

0.9996

(0.9987–1.0005)

0.333

 Immunosuppressionb

  No

1.0000

  

1.0000

  

  Yes

1.0040

(1.0013–1.0066)

0.003

1.0038

(1.0011–1.0065)

0.005

 Chronic kidney disease

  No

1.0000

  

1.0000

  

  Yes

1.0038

(1.0015–1.0061)

0.001

1.0039

(1.0016–1.0063)

0.001

  1. RR Risk ratio, CI Confidence interval, BMI Body mass index
  2. 1) Generalized linear regression models were used to obtain RR and 95% CI; 2) Multiple regression coefficients were adjusted by variables listed in the table
  3. aSevere illness included the register of dyspnea requiring hospital admission
  4. bImmunosuppression referred to any cause of the related deficiency except for type 2 diabetes mellitus or renal impairment