Table 5.

Predicting an Individual H7N9 Patient’s Survival

Independent Predictors	Value	Points
Age ≥ 60 years	Yes	20.0
Chronic diseases	Yes	11.0
Poor hand hygiene	No	0
Initial PaO2/FiO2 ratio ≤ 300 mmHg	Yes	55.0
Peak C-reactive protein ≥ 120 mg/L	Yes	31.5
Initial bilateral lung infection	Yes	11.5
Incubation period of ≤ 5 days	Yes	27.0
Time from illness onset to the first medical visit (days)	14	19.0
Total points	175.0
Estimate of survival probability, %
Probability of 1-month survival	25.0
Probability of 2-month survival	21.0
Probability of 3-month survival	19.0