Table 2.

Factors associated with length of stay (univariable and multivariable linear regression)

		Univariable analysis (n = 455)		Multivariable analysis (n = 440)
Variables	Median (IQR)	Estimation (95% CI)	P valuea	Estimation (95% CI)	P valueb
Study arm
Central testing	7 (2–13)	0 (ref)	0.34	0 (ref)
POCT	7 (3–14)	0.8 (−0.9 to 2.6)		0.3 (−1.2 to 1.8)	0.66
Sex
M	7 (2–13)	0 (ref)	0.59	0 (ref)
F	8 (3–15)	0.5 (−1.2 to 2.2)		0.9 (−0.6 to 2.4)	0.24
Age (/10 years)		0.7 (0.2 to 1.2)	0.003	0.3 (−0.2 to 0.9)	0.23
Symptom duration before ED visit (days)		0.1 (−0.1 to 0.3)	0.22
CRB65 score		2.6 (1.5 to 3.7)	<0.001	1.2 (0.1 to 2.4)	0.041
Charlson’s score		0.5 (0.2 to 0.9)	0.005
Antibiotics before ED	8 (2–18)	1.6 (−0.9 to 4.1)	0.21
Administered antibiotics in ED	7 (3–14)	0.9 (−0.8 to 2.6)	0.31
Oseltamivir	6 (1–13)	−0.2 (−3.1 to 2.7)	0.88
Medical ward	9 (5–15)	0 (ref)	<0.001	0 (ref)
ICU	25 (11–30)	9 (6 to 12.1)		8.9 (5.8 to −12.1)	<0.001
Transfer	9 (6–15)	0.9 (−1.0 to 2.8)		0.4 (−1.6 to 2.3)	0.72
ED ward	1 (1–2)	−8.3 (−10.1 to −6.5)		−8 (−9.8 to −6.1)	<0.001
Isolation
Single room	8 (4–15)	0 (ref)	0.39
Double room with blocked bed	6 (2–13)	−1.2 (−2.9 to 0.5)
Double room	10 (8–10)	0.3 (−7.2 to 7.7)

ED, emergency department; POCT, point-of-care testing.

^aP value of the Likelihood Ratio Test.

^bP value of the Wald test.