Logistic regression models (univariate and multivariable) for the outcome of having a positive COVID-19 result based on groups of symptoms classified from a PCA among 323 patients
| Factor* | Unadjusted OR (95% CI) | Adjusted OR† (95% CI) |
| F1: fever, chills, fatigue, sore throat, rhinorrhoea, cough | 2.94 (1.64 to 5.27) | 2.94 (1.60 to 5.40) |
| F2: abdominal pain, nausea, emesis, diarrhoea | 0.58 (0.32 to 1.04) | 0.61 (0.33 to 1.12) |
| F3: SOB, chest pain | 1.31 (0.75 to 2.30) | 1.32 (0.74 to 2.36) |
| F4: anosmia/dysgeusia, headache | 1.11 (0.44 to 2.80) | 1.07 (0.41 to 2.82) |
| F5: anorexia, myalgias | 1.42 (0.7 to 2.67) | 1.39 (0.70 to 2.56) |
*The comparator group for all five factors was asymptomatic for that group of symptoms.
†The adjusted OR controlled for age, sex and race/ethnicity.
PCA, principal component analysis; SOB, shortness of breath.