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. 2021 Oct 14;16(10):e0258671. doi: 10.1371/journal.pone.0258671

Table 2. Univariate logistic regression analysis of risk factors associated with SARS-CoV-2 test positivity.

Variable Univariate logistic regression
OR (95% CI) p-value
Age 1.00 (0.99–1.00) 0.245
Time interval between symptom onset and testing 1.05 (1.00–1.09) 0.046
Gender (Male) 0.81 (0.68–0.97) 0.025
Nationality (Malaysian) 3.98 (2.87–5.53) <0.001
Race
    Chinese 1.77 (1.28–2.46) 0.001
    Malay 2.93 (2.07–4.14) <0.001
    Indian 3.54 (2.41–5.18) <0.001
    Other 1 [Reference]  
Travel History 0.94 (0.23–3.81) 0.934
Close Contact with Confirmed SARS-CoV-2 Cases 4.57 (3.79–5.52) <0.001
Close Contact with Patient Under Investigation 3.35 (2.63–4.27) <0.001
Close Contact with Disease Cluster/Hotspot 2.69 (3.00–3.61) <0.001
Reason for Screening
    Accident & Emergency 1 [Reference]
    Admission to hospital 0.183 (0.024–1.395) 0.101
    Employer requirement 0.662 (0.091–4.834) 0.684
    On-Site/Workplace screening 0.395 (0.048–3.259) 0.389
    Pre Travel Requirement 0.121 (0.016–0.912) 0.04
    Requirement from health authority 1.551 (0.199–12.118) 0.675
    Self-referral–Walk in/Drive Thru/Home Screening 2.444 (0.338–17.65) 0.376
Purpose of Sampling
    Advanced testing 0.998 1
    Cluster 0.998 1
    COVID-19 Surveillance 24103874.63 1
    Diagnostic 21020316.72 0.999
    Referral Programme 0.998 0.999
    Research 1 [Reference] 1
Symptomatic 11.77 (9.71–14.27) <0.001
Presenting Symptoms
    Cough 9.27 (7.03–12.24) <0.001
    Chest Pain 0 0.999
    Running Nose 9.80 (7.22–13.30) <0.001
    Fever 15.55 (11.76–20.56) <0.001
    Sore Throat 7.94 (6.03–10.46) <0.001
    Myalgia 21.22 (10.10–44.59) <0.001
    Gastrointestinal Symptom 0 0.998
    Loss of Smell and Taste 123.42 (76.85–198.21) <0.001
    Nausea or Vomiting 5.24 (1.62–16.92) 0.006
    Fatigue 24.85 (11.15–55.37) <0.001
    Shortness of Breath 1.63 (0.22–11.81) 0.63
    Other Symptoms 19.29 (7.21–51.61] <0.001

OR: adjusted odd ratio.

*P < 0.05 was considered statistically significant.