. 2021 Jun 17;14(8):1028–1034. doi: 10.1016/j.jiph.2021.06.010

Table 7.

Multivariable stepwise regression to find the Predictors of Mortality (N = 249).

Steps	Predictors	B	OR (95 % CI)	Sig.
Step 1^a R² = 0.329	RR/Min	0.323	1.381(1.251−1.525)	0.001^*
Step 1^a R² = 0.329	Constant	−8.295	0.001	0.001
Step 2^b R² = 0.429	RR/Min	0.247	1.280 (1.152−1.423)	0.001^*
	Dyspnea	1.758	5.800 (2.724−12.346)	0.001^*
	Constant	−7.458	0.001	0.001
Step 3^c R² = 0.474	RR/Min	0.235	1.265 (1.137−1.408)	0.001^*
	Spo2	−0.083	0.921 (0.874−0970)	0.002^*
	Dyspnea	1.427	4.166 (1.881−9.227)	0.001^*
	Constant	0.661	1.937	0.813
Step 4^d R² = 0.509	RR/Min	0.222	1.249 (1.123−1.369)	0.001^*
	Spo2	−0.077	0.926 (0.879−0.976)	0.004^*
	Dyspnea	1.630	5.102 (2.213−11.762)	0.001^*
	Unconsciousness	3.409	30.237 (2.175−420.294)	0.011^*
	Constant	0.211	1.235	0.940
Step 5^e R² = 0.539	RR/Min	0.173	1.189 (1.065−1.328)	0.002^*
	HR/Min	0.033	1.033 (1.009−1.058)	0.007^*
	Spo2	0−.073	0.930 (0.879−0.984)	0.011^*
	Dyspnea	1.697	5.458 (2.290−13.004)	0.001^*
	Unconsciousness	4.062	58.071 (2.666−1265.010)	0.010^*
	Constant	−2.413	0.090	0.440

variable(s) entered on step 1: RR/Min (Respiratory rate/minute).

variable(s) entered on step 2: Dyspnea.

variable(s) entered on step 3: Spo2.

variable(s) entered on step 4: Unconsciousness.

variable(s) entered on step 5: HR/Min (Heart rate/minute).

P value < 0.05.