Table 2

 Group characteristics at test

CF (n = 39)Control (n = 21)Mean (95% CI) difference*p Value
CF, cystic fibrosis; PNA, postnatal age.
Results are presented as mean (SD) unless specified.
*Difference calculated as CF-control.
*PNA corrected for gestational age (GA), ie actual PNA-(40-GA) weeks.
‡p<0.05; §p<0.001.
Corrected PNA† (weeks)41.4 (22)37.0 (15.1)4.5 (–5.2 to 14.1)0.359
Weight (kg)8.1 (1.8)8.5 (1.2)–0.5 (–1.4 to 0.4)0.286
Weight (Z score)–0.7 (1.1)0.0 (0.7)–0.7 (–1.1 to 0.2)‡0.005
Length (cm)70.6 (7.2)72.2 (4.9)–1.6 (–4.8 to 1.5)0.312
Length (Z score)0.08 (1)1.1 (0.8)–1.0 (–1.5 to 0.5)*<0.001
Current maternal smoking (%)11 (28)5 (24)4 (–20 to 25)0.709
Current parental smoking (%)19 (49)8 (38)11 (–15 to 34)0.424