Table 3.
Vitamin D Status and Biochemistries: Consecutive 2-Month Blocks
| Month | Jan-Feb (n = 24) | Mar-Apr (n = 21) | May-Jun (n = 13) | Jul-Aug (n = 14) | Sept-Oct (n = 11) | Nov-Dec (n = 17) | ANOVA P-Value |
|---|---|---|---|---|---|---|---|
| 25(OH)D < 20 ng/ml | 9 (38) | 4 (19) | 0 (0) | 3 (21) | 1 (9) | 2 (12) | .10 |
| 25(OH)D < 30 ng/ml | 16 (67) | 10 (48) | 7 (54) | 6 (43) | 6 (55) | 9 (53) | .25 |
| Serum 25(OH)D, ng/mL | 24 ± 11 | 31 ± 12 | 30 ± 7 | 31 ± 11 | 32 ± 11 | 28 ± 7 | .15 |
| Serum PTH, pg/mL | 97 ± 10 | 84 ± 11 | 91 ± 13 | 65 ± 13 | 87 ± 15 | 83 ± 33 | .55 |
| Serum 1,25(OH) 2D, pg/mL | 70 ± 5 | 71 ± 5 | 62 ± 7 | 68 ± 7 | 76 ± 7 | 68 ± 6 | .86 |
Data are presented as N (%) or mean ± sd.