Canadian Journal of Infectious Diseases and Medical Microbiology

Research Article

Oxygen Requirement and Associated Risk Factors in Post-COVID-19 Patients Admitted to a Tertiary Care Center: A Cross-Sectional Study

Table 2

Risk factors affecting the duration of oxygen therapy in the post-COVID-19 period.


S. no.	Variables	Duration of oxygen therapy (in days)	value

1	Age category		0.013
	Less than and equal to 60 years (n = 46, 48.42%)	5.50 (3.00–8.00)
	More than 60 years (n = 49, 51.58%)	6.00 (5.00–11.00)

2	Gender		0.963
	Males (n = 57, 60.00%)	6.00 (4.00–10.00)
	Females (n = 38, 40.00%)	6.00 (3.75–10.00)

3	Comorbidities (at least one)		0.142
	Yes (n = 57, 60.00%)	6.00 (4.00–10.50)
	No (n = 38, 40.00%)	6.00 (3.00–8.25)

4	Comorbidities
	Hypertension (n = 39, 41.05%)	6.00 (4.00–10.00)	0.879
	Diabetes mellitus (n = 19, 20.00%)	5.00 (4.00–10.00)	0.594
	COPD (n = 22, 23.16%)	10.00 (6.00–12.75)	0.006
	CKD (n = 5, 5.26%)	6.00 (4.50–8.00)	0.828
	CVD (other than HTN) (n = 12, 12.63%)	6.00 (3.25–10.25)	0.844
	Hypothyroidism (n = 6, 6.32%)	9.50 (6.25–12.00)	0.146
	Others (n = 15, 15.79%)	7.00 (5.00–17.00)	0.063

5	Smoking status		0.044
	Yes (n = 17, 17.9%)	9.00 (5.50–13.00)
	No (n = 78, 82.1%)	6.00 (3.75–10.00)

6	Exposure to firewood		0.152
	Yes (n = 5, 5.3%)	10.00 (7.50–10.00)
	No (n = 90, 94.7%)	6.00 (4.00–10.00)

7	Severity of COVID-19		0.042
	Mild (n = 25, 26.32%)	5.00 (3.00–7.00)
	Moderate (n = 33, 34.74%)	6.00 (4.00–11.50)
	Severe (n = 37, 38.95%)	7.00 (5.00–10.50)

8	COVID-19 vaccination status		0.917
	Yes (n = 10, 10.53%)	5.50 (3.75–15.00)
	No (n = 85, 89.47%)	6.00 (4.00–10.00)

Note. Duration of oxygen therapy (in days) expressed as median (interquartile range = Q1 – Q3). The value is derived from the Mann–Whitney U test and Kruskal–Wallis H test for dichotomous and multichotomous variables, respectively. All bold values are statistically significant ( < 0.1). Other comorbidities include psychiatric disorders, autoimmune disorders, dyslipidemia, and stroke. COPD: chronic obstructive pulmonary disease. CKD: chronic kidney disease. CVD: cardiovascular diseases. HTN: hypertension. COVID-19: coronavirus disease 2019.