| Study | Risk Score or CART model |
|---|---|
| Afonso, 2012 | CART model 1 Fever, chills or sweats, duration < 2 days, cough |
| Afonso, 2012 | CART model 2 Fever, chills, sweating |
| Afonso, 2012 | CART model 3 Fever, myalgia |
| Anderson, 2018 | CART modelAge ≥ 5 years, cough, coryza, chills, myalgia |
| Dugas, 2019 | Risk score 2 points for new or increased cough, 1 point for headache, 1 point for subjective fever, and 1 point for measured temperature > 100.4 F. Low-risk group: 0 to 2 points High-risk group: ≥ 3 points |
| Ebell, 2012 | Risk score (“FluScore”) 2 points for fever and cough, 2 points for myalgias, 1 point for chills or sweats, and 1 point for duration < 2 days Low-risk group: 0 to 2 points Moderate risk group: 3 points High-risk group: 4 to 6 points |
| Govaert, 1998 | Risk score (original) 1 point for each of the following 8 symptoms: cough, fever, acute onset, malaise, rigor or chills, myalgia, headache, sore throat. Probability of influenza is then reported for each point score. |
| Govaert, 1998 | Risk score (post hoc) 1 point for each of the following 8 symptoms: cough, fever, acute onset, malaise, rigor or chills, myalgia, headache, sore throat Low-risk group: 0 points Moderate risk group: 1 to 2 points High-risk group: 3 + points |
| Ranjan, 2012 | Risk score 1 to 3 points for different levels of fever, 1 point each for sneezing, coryza, sore throat, cough or wheeze, 1 point for flu circulating in community, and 2 points for close contact with confirmed flu. Low-risk group: 0 to 6 points High-risk group: ≥ 7 points |
| Vuichard-Gysin, 2019 (children) | CART model Fever, chills, cough, coryza, male sex |
| Vuichard-Gysin, 2019 (children) | Risk score (children) 1 point for age 6 to 17 years, 2 points for chills, 2 points for cough, and 3 points for fever. Low-risk group: 0 to 4 points High-risk group: ≥ 5 points |
| Vuichard-Gysin, 2019 (adults) | CART model Chills, cough, myalgia, sinus problem, sore throat |
| Vuichard-Gysin, 2019 (adults) | Risk score (adults) 2 points for chills, 2 points for cough, and 1 point for myalgias Low-risk group: 0 to 3 points High-risk group: ≥ 4 points |
| Woolpert, 2012 | Risk score (original) 1 point for each of the following 4 symptoms: acute onset, fever, cough, myalgia. Probability of influenza is then reported for each point score. |
| Woolpert, 2012 | Risk score (post hoc) 1 point for each of the following 4 symptoms: acute onset, fever, cough, myalgia Low-risk group: 0 to 1 points Moderate risk group: 2 points High-risk group: 3 + points |
| Zimmerman, 2016 | CART model Fever, cough, fatigue |
CART, Classification and Regression Tree.