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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