Table 3 Comparison of fluoride concentration in big toenail and hair samples between IC and SC
From: Big toenail and hair samples as biomarkers for fluoride exposure – a pilot study
Biomarker | City | N | Mean Rank | Sum of Ranks | U | P |
|---|---|---|---|---|---|---|
Nail Fluoride concentration (mg/Kg) | IC | 21 | 29.67 | 623.00 | 49.00 | < 0.001 |
SC | 21 | 13.33 | 280.00 | |||
Hair Fluoride concentration (mg/Kg) | IC | 21 | 27.00 | 567.00 | 105.00 | =0.004 |
SC | 21 | 16.00 | 336.00 |