Secretory IgA impacts the microbiota density in the human nose

Microbiome

Table 1 Study population and sex differences

	n (%)	Age (years) [mean (range)]	sIgA concentration (μg/ml) [mean (range)]	Bacterial density (absolute number of FACS events per sample) [median (range)]	sIgA-positive fraction size (%) [median (range)]
All	50	37 (21–61)	158 (3–365)	78,900 (8270–264,395)	21.5 (0.6–47.0)
Male	17 (34%)	37 (25–58)	183 (3–365)	80,174 (36,023–264,395)	24.6 (2.4–47.0)
Female	33 (66%)	37 (21–61)	145 (12–349)	78,634 (8 270–218,403)	20.9 (0.6–45.7)
			p = 0.19	p = 0.53	p = 0.21

Statistical differences between male and female study participants were tested by Mann–Whitney test (for bacterial density and fraction size) or unpaired t test (for sIgA concentration)

ISSN: 2049-2618