Table 2.

Descriptive statistics of hair cortisol concentrations of all participants and stratified by sex.

Hair cortisol concentrations (pg/mg hair)
	All (n = 419)	Boys (n = 191)	Girls (n = 228)
10th Percentile	1.53	1.41	1.65
25th Percentile	2.10	1.88	2.32
Median	2.98	2.69	3.31
75th Percentile	4.38	3.88	4.70
90th Percentile	6.10	6.10	6.11
GM (95% CI)	3.13 (2.90, 3.38)	2.95 (2.61, 3.30)	3.30 (2.99, 3.63)

CI, confidence interval; GM, geometric mean.