Fig. 3
From: Development of the gut microbiota during early life in premature and term infants
Comparisons of similarity between sample groups using four distance measures. Four sample groups have been analysed; samples from premature infants at 6 weeks of age, samples from premature infants at 2 years, samples from term infants at 6 weeks of age and samples from term infants at 2 years of age. Boxes indicate the 25% and 75% quartiles with the bar showing the median. Whiskers mark the quartiles ± 1.5 IQR. The x axis indicates the set of samples for which distances have been measured. Bars along the top of the charts indicate where a comparison has been made, either using a Mann Whitney U test (intragroup to intergroup distances) or a Wilcoxon signed-rank test (intragroup distances at 6 weeks to intragroup distances at 2 years of age) has been made. Where statistical tests found a significant difference, asterisks indicate the p value: * indicates 0.05 > p ≥ 0.001, ** indicates p < 0.001