. 2014 Mar 6;48(6):3467–3476. doi: 10.1021/es404279r

Table 2. Distribution and Variability of Blood and Hair Mn Concentrations in the Study Population^a^,^b.

						percentile
biomarkers	n	k	mean (SD)	GM (GSD)	min	25th	50th	75th	max	σ²_btw	σ²_within	ICC
blood manganese (μg/L)	664	418	24.4 (6.6)	23.5 (1.3)	8.9	20.2	24.0	28.4	56.3	18.49	23.78	0.44
hair manganese (μg/g)^c	800	449	3.6 (5.9)	1.8 (3.2)	0.05	0.8	1.6	3.7	53.3	0.14	0.10	0.58

Abbreviations: n, number of samples; k, number of women; SD, standard deviation; GM, geometric mean; GSD, geometric standard deviation; ICC, intraclass correlation coefficient.

Calculations of the variance between- and within-woman and ICC for blood and hair Mn concentrations were adjusted for gestational age.

Variances between- and within-woman and ICC were calculated and reported for log₁₀-transformed hair Mn concentrations.

Table 2. Distribution and Variability of Blood and Hair Mn Concentrations in the Study Populationa,b.

Table 2. Distribution and Variability of Blood and Hair Mn Concentrations in the Study Population^a^,^b.