Table 5.

Results of the Cox regression analysis.

Parameter	B	Sig	Exp(B)	95% CI for Exp(B)
				Lower	Upper
FT3	−1.199	0.032	0.302	0.101	0.904
FT4	0.297	0.671	1.346	0.341	5.039
SpO2	−0.073	0.003	0.93	0.886	0.976
Age	0.02	0.232	1.021	0.987	1.055
Comorbidities	−1.002	0.193	0.367	0.081	1.658
Hypothyroidism	0.208	0.612	1.231	0.552	2.749

FT3, free T3; FT4, free T4; SpO₂, baseline oxygen saturation.