Table 2.

Similarity of percentages analysis of bacterial community similarity (Bray-Curtis) between pediatric metacommunities

	Occupancy*			Mean Abundance
Species	BE	PBB	CF	(%)	Mean Contribution	% Contribution	Cumulative %
Haemophilus influenzae	12	11	19	23.22	18.79	37.44	37.44
Streptococcus mitis	18	12	25	14.59	8.45	16.84	54.28
Prevotella melaninogenica	16	11	24	9.16	4.59	9.15	63.43
Veillonella dispar	19	12	24	4.48	3.90	7.77	71.20
Fusobacterium nucleatum	17	11	21	2.63	1.99	3.97	75.17
Neisseria flavescens	12	11	19	5.04	1.73	3.44	78.61
Porphyromonas catoniae	17	11	18	1.66	1.05	2.09	80.70
Haemophilus parainfluenzae	15	10	16	1.30	1.04	2.06	82.76
Porphyromonas gingivalis	17	9	17	1.60	0.97	1.92	84.69
Prevotella nanceiensis	13	11	15	0.85	0.54	1.08	85.77
Prevotella histicola	12	7	19	0.81	0.46	0.92	86.69
Granulicatella adiacens	15	10	19	0.53	0.44	0.87	87.57
Prevotella oris	10	4	13	1.07	0.37	0.73	88.30
Sphingomonas echinoides	9	7	3	0.73	0.36	0.71	89.02
Gemella morbillorum	13	11	21	0.86	0.35	0.70	89.71
Prevotella pallens	16	8	13	0.63	0.32	0.63	90.35

Definition of abbreviations: BE = bronchiectasis; CF = cystic fibrosis; PBB = protracted bacterial bronchitis.

Given is occupancy, or the number of patients for each disease group in which a given species was detected. Next is mean % abundance of sequences for a species across the samples it was observed to occupy. Mean contribution represents the average contribution of a given species to the average similarity between samples (overall mean = 50.2%). Percentage contribution is the mean contribution divided by mean similarity across samples. The list of species is not exhaustive, so cumulative % value does not sum to 100%. Species-level identities of detected taxa are reported here. However, given the length of the ribosomal sequences analyzed, these identities should be considered putative.

^*Total n for each pediatric disease cohort: BE, 19; PBB, 12; CF, 25.