Table 4

Risk stratification by M-ATS, R-ATS and España rule and outcome measures in NHAP

Risk groups	NHAP Patients N =767	30-day mortality N =95	ICU admission N =5	Severe pneumonia N =98	Hospital LOS (days)^†
M-ATS: low	647 (84.4)	60 (9.3)	1 (0.2)	61 (9.4)	7 (5–10)
M-ATS: high	120 (15.6)	35 (29.2)	4 (3.3)	37 (30.8)	7 (5–10)
p^*		<0.0001	<0.0001	<0.0001	0.804

R-ATS: low	550 (71.7)	34 (6.2)	0 (0)	34 (6.2)	7 (5–10)
R-ATS: high	217 (28.3)	61 (28.1)	5 (2.3)	64 (29.5)	7 (5–10)
p^*		<0.0001	<0.0001	<0.0001	0.288

España rule: low	349 (45.5)	19 (5.4)	2 (0.6)	19 (5.4)	7 (5–9)
España rule: high	418 (54.5)	76 (18.2)	3 (0.7)	79 (18.9)	7 (5–10)
p^*		<0.0001	0.804	<0.0001	0.066

All data are numbers (%) unless stated otherwise.
↵* χ² Test for 30-day mortality, ICU admission and severe pneumonia. Mann–Whitney U test for LOS in hospital.
↵† Median (IQR 25th–75th IQR).
ICU, intensive care unit; LOS, length of stay; NHAP, nursing home-acquired pneumonia.