TABLE 2.
Vitamin D Status-Related Values in All Patients
| Characteristic | Valuea |
|||
|---|---|---|---|---|
| All Patients (N = 130) | CD (N = 94 [72.3%]) | UC (N = 36 [27.7%]) | CD vs UC, Pb |
|
| 25OHD ≤15 | 45 (34.6) | 36 (38.3) | 9 (25) | .16 |
| 25OHD ≤8 | 14 (10.8) | 12 (12.8) | 2 (5.6) | .25 |
| 25OHD, ng/mL | (N = 94) | (N = 36) | ||
| Mean ± SD | 20.9 ± 10.7 | 20.0 ± 10.3 | 23.4 ± 11.7 | |
| Range | 7.0–56.1 | 7.0–50.2 | 7.0–56.1 | .10 |
| PTH (N = 110), pg/mL | (N = 79) | (N = 31) | ||
| Mean ± SD | 41.4 ± 17.3 | 42.3 ± 18.3 | 39.0 ± 14.3 | |
| Range | 9.0–106.1 | 9.0–106.1 | 20.3–66.1 | .38 |
| Ca (N = 112) | (N = 81) | (N = 31) | ||
| Mean ± SD | 9.5 ± 0.4 | 9.4 ± 0.4 | 9.5 ± 0.3 | |
| Range | 7.8–10.4 | 7.8–10.4 | 8.9–10.1 | .25 |
| Vitamin D supplementationc | (N = 92) | (N = 36) | .18 | |
| (N = 128) | 99 (77.3) | 74 (80.4) | 25 (69.4) | |
| Season of 25OHD assessment | ||||
| Winterd | 38 (29.2) | 30 (31.9) | 8 (22.2) | |
| Spring | 31 (23.8) | 20 (21.3) | 11 (30.6) | |
| Summer | 33 (25.4) | 25 (26.6) | 8 (22.2) | |
| Fall | 28 (21.5) | 19 (20.2) | 9 (25) | .52 |
Ca indicates serum calcium.
a
Data are given as n (%) unless otherwise indicated.
b
Pearson χ2 test for dichotomous variables, Fisher’s exact test for nominal variables, 2-sample t test with equal variances assumed for continuous variables.
c
Refers to intake of any form of vitamin D supplement including multivitamins at any time during the 3 months before the 25OHD measurement and not to dietary vitamin D intake. Subjects who reported taking vitamin D supplements were taking between 400 and 800 IU of vitamin D per day in addition to dietary vitamin D.
d
Winter is from December 22 to March 21; spring, March 22 to June 21; summer, June 22 to September 21; fall, September 22 to December 21.