Table 1. CRB-65 criteria and additional parameters for risk prediction before outpatient treatment (17, 18, 20).

Parameter	CRB-65 criteria	Additional parameters
Impaired consciousness	newly arisen
Respiratory rate	≥ 30/min
Blood pressure	<90 mmhg / ≤ 60 mmhg
Age	≥ 65 years
Comorbidities*		(potentially) decompensated
Oxygen saturation		<90%
Functional status		chronically bedridden (>50% of the day)

* chronic cardriac, neurological, hepatic, renal, or malignant accompanying disease