| Year | Serum 25-Hydroxyvitamin D Concentration (ng/mL) | Total Tests (n) | |||
|---|---|---|---|---|---|
| <12 | <20 | <30 | >150 | ||
| 2007 | 17.24 | 48.62 | 71.38 | 0.34 | 290 |
| 2008 | 21.04 | 47.4 | 75.77 | 0 | 846 |
| 2009 | 16.65 | 39.01 | 69.19 | 0 | 2,889 |
| 2010 | 15.53 | 35.55 | 63.27 | 0.04 | 5,358 |
| 2011 | 16.81 | 38.15 | 65.14 | 0.02 | 8,910 |
| 2012 | 33.11 | 60.83 | 82.22 | 0.07 | 12,194 |
Data are percentages unless otherwise indicated. The number of serum 25-hydroxyvitamin D tests done increased from 290 in 2007 to 12194 in 2012. The percentage of patients with serum concentrations of 25-hydroxyvitamin D <12, 20, 30 or >150 ng/mL did not change appreciably. If anything the serum25-hydroxyvitamin D concentrations decreased during the period of observation, again attesting that patients were undertreated.