Fig. 3.

Mortality of mild and severe pneumonia according to the number of six underlying health conditions. The difference of morality between mild and severe pneumonia was not significant in patients with multiple underlying health conditions whereas mortality of severe pneumonia was significantly higher in patients with single or no underlying condition. CURB65 age ≥ 65 years, Confusion, blood Urea nitrogen ≥7 mmol/L, Respiratory rate > 30 per minute, and Blood pressure < 90 mmHg in systole or ≤ 60 mmHg in diastole, N.S. not significant