Fig. 5
From: The developing airway and gut microbiota in early life is influenced by age of older siblings
Airway sibling score plotted as a function of age gap to the closest older sibling (top) and the number of older siblings (bottom), stratified by sample time. Boxplots denote upper and lower quartiles. The middle of each boxplot denotes the mean sibling score, with the mean sibling score of children with no older siblings being extrapolated horizontally (dashed line). Age gap truncated at 10 years; number of older siblings truncated at 3. The curves were fitted by local (alpha = 0.75) quadratic polynomial regression