Table 1 Descriptive Statistics of the Juneau Study Sample by CWF Status (n = 1905)
Descriptor | Optimal CWF Year 2003 (0.7–1.2 mg/L) | Suboptimal CWF Year 2012 (<  0.1 mg/L) | ||
|---|---|---|---|---|
Frequency | Percent | Frequency | Percent | |
N | 853 | 44.8 | 1052 | 55.2 |
Gender | ||||
 Female | 402 | 47.2 | 528 | 50.1 |
 Male | 451 | 52.8 | 524 | 49.9 |
Race/Ethnicity | ||||
 White/Non-Hispanic | 319 | 37.5 | 269 | 25.6 |
 Black/African American | 19 | 0.02 | 19 | 0.02 |
 American Indian or Alaskan Native | 423 | 49.6 | 604 | 57.4 |
 Asian or Pacific Islander | 23 | 2.7 | 37 | 3.5 |
 Hispanic or Latino | 18 | 2.1 | 52 | 4.9 |
 Native Hawaiian or Other Pacific | 18 | 2.1 | 55 | 5.2 |
 Unknown | 33 | 3.9 | 16 | 1.5 |