TABLE 3.
Multi-year population estimates of serum 25(OH)D from NHANES
| Percentile2 |
Prevalence3 |
||||||
| Survey years | Sample | Mean1 | 5th | 50th | 95th | <37.5 nmol/L | <75 nmol/L |
| n | 25(OH)D,4 nmol/L | % below cutoff | |||||
| 2001–2002 | 7807 | 60 (58–61) | 23 | 57 | 97 | 16 (13–19) | 77 (73–80) |
| 2003–2004 | 7399 | 63 (59–66) | 24 | 60 | 103 | 13 (10–16) | 71 (66–76) |
| 2005–2006 | 7402 | 55 (53–57) | 20 | 53 | 90 | 20 (17–24) | 83 (80–85) |
1
Values are population-weighted means (95% CI).
2
Values are population-weighted mean 25(OH)D concentrations at the respective percentiles.
3
Values are population-weighted percents (95% CI).
4
Unit conversion: 2.5 nmol/L = 1 ng/mL.