Table 1. Severity assessment of CAP based on Antibiotic Guidelines [5].

Mild CAP	Absence of all of the following: • Respiratory rate > 30 breath per minute • Systolic blood pressure < 90 mm Hg • Oxygen saturation < 92% • Acute onset confusion • Multilobar chest x-ray change • Arterial pH < 7.35 • Partial pressure of oxygen < 60 mm Hg
Moderate CAP	Presence of any of the above criteria
Severe CAP	SMART-COP score ≥ 5 or CORB score ≥ 2

SMART-COP is an acronym for systolic blood pressure, multilobar involvement, albumin, respiratory rate, tachycardia, confusion, oxygen level, and pH (arterial) [20]; CORB is an acronym for confusion, oxygen level, respiratory rate and blood pressure level (systolic and diastolic) [21].