Table 3.

Estimated Hazard Risks of 3- and 30-day mortality for MERS-CoV patients

	3-day mortality 91(13.8%)								30-day mortality 187(28.3%)
	P	HR	95% CI		P	aHR	95% CI		P	HR	95% CI		P	aHR	95% CI
Elderly	0.001*	2.4	1.55	3.57	0.041*	1.7	1.02	2.71	0.001*	2.5	1.86	3.33	0.003*	1.7	1.18	2.31
Male gender	0.530	1.2	0.73	1.82	0.802	1.1	0.65	1.74	0.166	1.3	0.91	1.73	0.639	1.1	0.77	1.53
Saudi nationality	0.112	1.5	0.91	2.46	0.068	0.6	0.29	1.05	0.001*	2.5	1.66	3.66	0.168	0.7	0.44	1.15
Symptomatic	0.093	5.4	0.76	38.92	0.861	1.2	0.13	11.08	0.011*	12.6	1.77	90.14	0.281	3.1	0.40	24.07
Non-healthcare worker	0.002*	8.8	2.17	35.71	0.009*	8.8	1.73	44.62	0.001*	20.7	5.15	83.44	0.001*	19.2	4.37	84.68
Pre-existing illness	0.001*	3.0	1.61	5.44	0.256	1.5	0.76	2.77	0.001*	4.7	2.89	7.52	0.005*	2.1	1.25	3.39
Severity of illness	0.001*	8.9	4.94	16.04	0.001*	6.5	3.46	12.28	0.001*	4.7	3.43	6.55	0.001*	3.7	2.60	5.21
Source of infections
Camels	0.023*	0.6	0.35	0.93	0.534	0.9	0.52	1.41	0.006*	0.6	0.47	0.88	0.725	0.9	0.67	1.32
Hospital-acquired infections	0.364	1.3	0.74	2.24	0.001*	2.8	1.49	5.22	0.255	0.8	0.49	1.21	0.001*	2.9	1.74	4.88
Household contact	0.042*	0.1	0.02	0.93	0.393	0.4	0.05	3.17	0.002*	0.1	0.03	0.43	0.096	0.3	0.07	1.24
Regions of Saudi Arabia
Central	0.577	1.2	0.62	2.36	0.647	0.8	0.36	1.88	0.157	1.4	0.87	2.34	0.906	1.0	0.51	1.83
East	0.688	1.2	0.53	2.66	0.456	0.7	0.26	1.85	0.206	1.5	0.81	2.62	0.963	1.0	0.47	2.06
South	0.624	1.3	0.49	3.35	0.696	1.2	0.43	3.59	0.279	1.5	0.73	2.96	0.226	1.7	0.73	3.76

*Significant at α = 0.05. HR unadjusted estimates of hazard ratios, aHR adjusted estimates of hazard ratios