Table 4.

Subgroup analysis of influence of respiratory alkalosis on the virus shedding duration and length of hospital stay.

	Virus shedding duration (days)		P-value	Length of hospital stay (days)		P-value
	Respiratory alkalosis (n = 66)	No respiratory alkalosis (n = 164)		Respiratory alkalosis (n = 66)	No respiratory alkalosis (n = 164)
Gender
Male	15 (10–39)	18 (6–59)	0.369	13 (5–36)	16 (5–41)	0.221
Female	17 (6–43)	19 (3–53)	0.824	17 (5–40)	15.5 (5–40)	0.830
Age
Elderly*	22 (9–43)	19.5 (4–43)	0.326	19 (6–40)	17 (6–37)	0.349
Non-elderly#	15 (6–39)	18 (3–59)	0.045	13 (5–35)	15 (5–41)	0.091
Hypertension
No	16 (6–43)	19 (3–59)	0.473	15.5 (5–40)	15 (5–41)	0.665
Yes	18 (12–38)	18 (6–45)	0.648	16.5 (5–37)	19.5 (7–41)	0.336
Diabetes
No	16.5 (6–43)	19 (3–59)	0.521	15.5 (5–40)	16 (5–41)	0.477
Yes	16.5 (9–34)	23 (6–43)	0.776	18 (6–32)	17 (7–30)	1.000
Cardiovascular diseases
No	16 (6–43)	18 (3–59)	0.210	16 (5–40)	16 (5–41)	0.458
Yes	31 (21–39)	22 (19–29)	0.250	22 (12–35)	23 (19–27)	0.786

P < 0.05 was considered statistically significant (marked in bold).

^*≥60 years,

^#<60 years.

COVID-19, coronavirus disease 2019.