Viral respiratory tract infections in young children with cystic fibrosis: a prospective full-year seasonal study

Table 4 Comparison of outcomes in virus-positive and -negative RTIs

Outcome measures	Virus (−) RTI	Virus (+) RTI	P-value
Number of episodes	(n = 20)	(n = 44)
Age at inclusion (months)	7.1 ± 1.4	8.3 ± 0.9	0.4668
Total number of RTI episodes	4.6 ± 0.3	4.3 ± 0.2	0.6037
Respiratory symptom duration (days)	7.8 ± 0.5	8.3 ± 0.5	0.9585
Weight Z-score at inclusion	− 1.4 ± 0.3	−1.4 ± 0.2	0.1166
Difference of weight Z-scores^a	−0.5 ± 0.2	0.3 ± 0.1	0.5703
Cumulative number of days of antibiotics^b	41.1 ± 5	37.8 ± 3.2	0.5646

Results are presented as mean ± SD. Wilcoxon signed rank for paired comparisons
^aWeight Z-score at the end of the study period – weight Z-score at the beginning
^bOver the year of the study follow-up

ISSN: 1743-422X