a strong trendp = 0.0022
Lungs of pups in P had a significantly lower proportion of aerated lung volume ( p = 0.0001), with significant posthoc differences on day 3/day 0 and day 5/day 2, and a strong trend towards less aerated volume on 7/day 4 ( p = 0.0022, p = 0.0282 and p = 0.0504 respectively).