Table 3. Forward stepwise multivariate analysis for risk factors for transmission of MERS-CoV.

Variables	Non-spreader (n = 171)	Spreader (n = 15)	aOR (95% CI)	P value
Fever (≥ 38.5℃)	22 (13.0)	6 (40.0)	5.54 (1.38–22.30)	0.016
CXR abnormality in more than 3 lung zones	17 (10.3)	7 (46.7)	7.33 (1.93–27.79)	0.003
Nonisolated in-hospital days, median (IQR)	0.0 (0.0–2.0)	4.0 (1.0–7.0)	1.32 (1.09–1.60)	0.004

Data shown are number (%).

MERS-CoV = Middle East Respiratory Syndrome Coronavirus, aOR = adjusted odds ratio, CI = confidence interval, CXR = chest X-ray, IQR = interquartile range.