Table 1.

Mixed-effects regressions of natural log-transformed hair Hg (μg/g) against fish consumption frequency, general fish consumption rate, species-specific fish consumption rate, unsealed Hg dose, or scaled Hg dose.

Predictors	Model 1 Fish Consumption Frequency (AIC^a = 1071.6)	Model 2 General Fish Consumption (AIC = 1075.1)	Model 3 Species-Specific Consumption (AIC=1077.5)	Model 4 Unscaled Hg Dose (AIC=1062.8)	Model 5 Scaled Hg Dose (AIC = 1059.1)

	β-Estimate (95% CI)^b	β-Estimate (95% CI)	β-Estimate (95% CI)	β-Estimate (95% CI)	β-Estimate (95% CI)
Age	0.012 (0.0040, 0.020)^**	0.013 (0.0043, 0.021)^**	0.013 (0.0044, 0.021)^**	0.013 (0.0044, 0.021)^**	0.013 (0.0043, 0.021)^**
Gender (referent = Male)
Female	−0.57 (−0.86, −0.28)^***	−0.58 (−0.87, −0.28)^***	−0.58 (−0.87, −0.28)^***	−0.58 (−0.88, −0.29)^***	−0.58 (−0.87, −0.28)^***
BMI (kg/m²)	−0.0078 (−0.031, 0.015)	−0.0077 (−0.031, 0.016)	−0.0083 (−0.032, 0.015)	−0.0077 (−0.031, 0.016)	−0.0072 (−0.031, 0.016)
Ethnicity (referent = White/Caucasian)^c
American Indian	0.0042 (−0.33, 0.33)	−0.0028 (−0.34, 0.33)	−0.0066 (−0.34, 0.33)	−0.0073 (−0.34, 0.33)	−0.004 (−0.34, 0.33)
African American	−0.77 (−2.5, 0.96)	−0.83 (−2.6, 0.93)	−0.82 (−2.6, 0.94)	−0.82 (−2.6, 0.93)	−0.82 (−2.6, 0.94)
Hispanic	0.11 (−0.57, 0.8)	0.13 (−0.57, 0.82)	0.13 (−0.57, 0.82)	0.13 (−0.57, 0.82)	0.11 (−0.58, 0.81)
Education (referent = High school or less)
Some college	−0.17 (−0.52, 0.19)	−0.16 (−0.52, 0.20)	−0.16 (−0.52, 0.20)	−0.15 (−0.51, 0.21)	−0.16 (−0.52, 0.20)
Graduated college or more	0.43 (0.066, 0.79)^*	0.45 (0.081, 0.82)^*	0.45 (0.083, 0.82)^*	0.46 (0.088, 0.83)^*	0.45 (0.085, 0.83)^*
Season (referent = Fall)
Spring	−0.014 (−0.1, 0.074)	−0.0084 (−0.095, 0.079)	−0.0047 (−0.091, 0.082)	0.00027 (−0.086, 0.086)	−0.012 (−0.099, 0.074)
Summer	−0.028 (−0.12, 0.059)	−0.033 (−0.12, 0.054)	−0.027 (−0.11, 0.059)	−0.021 (−0.11, 0.065)	−0.032 (−0.12, 0.055)
Winter	−0.18 (−0.27, −0.092)^***	−0.17 (−0.25, −0.080)^***	−0.16 (−0.25, −0.079)^***	−0.16 (−0.25, −0.079)^***	−0.17 (−0.26, −0.082)^***
Percent local fish consumed	0.0016 (0.00024, 0.003)^*	0.0016 (0.00028, 0.003)^*	0.0015 (2e-04, 0.0029)^*	0.0015 (2e-04, 0.0029)^*	0.0015 (0.00019, 0.0029)^*
Fish Consumption Frequency (referent = ≤ Once a month)		General FCR (g/d)	Species-Specific FCR (g/d)	Hg Dose (μg/kg/d)	Scaled Hg Dose (μg/kg/d)
2 or 3 times a month	0.067 (−0.041, 0.17)^{^}	0.00047 (0.00011, 0.00083)^*	0.00018 (0.000037, 0.00032)^*	0.17 (0.046, 0.29)^**	0.38 (0.056, 0.71)^*
Once a week	0.17 (0.041, 0.29)^**
More than once a week	0.21 (0.073, 0.34)^**

AIC: Akaike Information Criterion; a smaller AIC indicates a better goodness-of-fit.

p<0.1

^{^}

p<0.1

p<0.05

^**

p<0.01

^***

p<0.001.

Asian American not included due to extremely small sample size (n=1)