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Table 2 Descriptive statistics for fluoride exposure measures

From: Fluoride exposure and sleep patterns among older adolescents in the United States: a cross-sectional study of NHANES 2015–2016

MeasureArithmetic meanStandard errorMedian5th percentile95th percentile
Plasma fluoride (μmol/L) a0.350.020.290.140.67
Tap water fluoride (mg/L)b0.390.050.270.070.81
  1. Note. Sampling weights were applied for calculation of all descriptive statistics. For water fluoride, descriptive statistics remained the same following reweighting of sampling weights; an = 473 (weighted N = 12,531,822); bn = 419 (weighted N = 11,577,700)