. 2019 Feb 28;38(4):667–673. doi: 10.1007/s10096-019-03514-1

Table 4.

Length of hospitalization (in days) according influenza viral load

Characteristics	All patients (n = 239)	Ct value (viral load)			P value^a	P value^b
Characteristics	All patients (n = 239)	≤ 20 (n = 27)	> 20–30 (n = 138)	> 30 (n = 74)	P value^a	P value^b
All cases	7 (5–12)	9 (6–13)	7 (5–11)	8 (5–12.25)	0.19	0.34
Pneumonia	9 (5.25–14.75)	13 (9–38.5)	8 (4–10.75)	9 (6–26)	0.12	0.098
Respiratory failure	15.5 (8.5–51.5)	45 (15-NA)	13 (7–39.5)	26 (14–53)	0.447	0.26
Poor outcome	13 (6.75–33.25)	37 (12.5–53.5)	8 (5–17.5)	14 (11–32)	0.223	0.091

Results are expressed as median with interquartile range (IQR). ^aAcross all Ct value groups. ^bBetween high viral load group (Ct ≤ 20) and other groups combined