Table 2 Fluoride concentration in big toenail and hair samples
From: Big toenail and hair samples as biomarkers for fluoride exposure – a pilot study
Biomarker | IC | SC | Difference | |
|---|---|---|---|---|
Nail Fluoride concentration (N = 21) (mg/Kg) | Mean ± SE | 2.34 + 0.26 (95% CI 1.80–2.88) | 0.98 + 0.08 (95% CI 0.82–1.14) | 1.36 + 0.25 (95% CI 0.85–1.88) |
Median | 2.296 (SIQR 0.917) | 0.914 (SIQR 0.189) | 1.426 (SIQR 0.933) | |
Hair Fluoride concentration (N = 21) (mg/Kg) | Mean ± SE | 0.24 + 0.04 (95% CI 0.17–0.32) | 0.14 + 0.02 (95% CI 0.10–0.17) | 0.11 + 0.04 (95% CI 0.03–0.19) |
Median | 0.194 (SIQR 0.059) | 0.126 (SIQR 0.045) | 0.073 (SIQR 0.085) |