Table 3. Bivariate analysis for acute respiratory distress syndrome among patients admitted with severe COVID-19 at WURH, 2021.

Variables	Category	ARDS				χ2	P-value
		No		Yes
		N	%	N	%
Age (years)	<65	191	69.71	83	30.29	2.89	0.089*
	≥65	25	56.82	19	43.18
Gender	Female	74	72.55	28	27.45	1.47	0.225
	Male	142	65.74	74	34.26
Residence	Rural	92	69.70	40	30.30	0.32	0.568
	Urban	124	66.67	62	33.33
Comorbidity	No	126	71.19	51	28.81	1.95	0.163*
	Yes	90	63.83	51	36.17
Fever	No	56	68.29	26	31.71	0.07	0.934
	Yes	160	67.80	76	32.20
O2 saturation levels (%)	≥94%	64	76.19	20	23.81	3.58	0.058*
	<94%	152	64.96	82	35.04
Neutrophilia	No	152	71.03	62	28.97	2.89	0.089*
	Yes	64	61.54	40	38.46
Duration of hospital stay	≤11days	129	72.88	48	27.12	4.50	0.034*
	>11days	87	61.70	54	38.30
Time from onset to administration	Early	21	70.00	9	30.00	0.07	0.798
	Delayed	195	67.71	93	32.29