Table 6.
Circulating 25(OH)D and PTH Changes during Pregnancy by Treatment Group and Race/Ethnicity
| Characteristic | 400 IU Group | 2000 IU Group | 4000 IU Group | p-value |
|---|---|---|---|---|
| N=111 | N=122 | N=117 | ||
| Maternal age at delivery (years), Mean ± SD | 27.4 ± 5.7 | 28.0 ± 5.7 | 27.1 ± 5.5 | 0.49 |
|
| ||||
| Mode of Delivery1: N (%) | ||||
| Uncomplicated vaginal | 69 (62.2%) | 81 (66.4%) | 81 (69.8%) | |
| Assisted vaginal | 2 (1.8%) | 4 (3.3%) | 9 (7.8%) | |
| C/S after Labor | 23 (20.7%) | 19 (15.6%) | 19 (16.4%) | |
| C/S without Labor | 17 (15.3%) | 18 (14.8%) | 7 (6.0%) | |
| Vaginal, Any type | 71 (74.7%) | 85 (79.4%) | 90 (85.7%) | 0.15 |
| Primary Cesarean Section | 24 (25.3%) | 22 (20.6%) | 15 (14.3%) | |
|
| ||||
| Gestational Age (weeks) at Delivery, Mean ± SD | 38.6 ± 2.2 | 38.8 ± 1.8 | 39.1 ± 1.8 | 0.17 |
|
| ||||
| Birth Weight (grams) at Delivery, Mean ± SD | 3221.8 ± 674.9 | 3360.1 ± 585.0 | 3284.6 ± 597.6 | 0.23 |
|
| ||||
| Admission to Level II or III, N (%) | 12 (10.8%) | 14 (11.5%) | 11 (9.4%) | 0.9 |
1
2nd trimester mean value was the average 25(OH)D value obtained at visits between 16 and 24 weeks of gestation.
2
Δ baseline to 1 month prior connotes the change from the baseline 25(OH)D level to the level achieved at one month prior to delivery.
3
2nd trimester mean value was the average PTH value obtained at visits between 16 and 24 weeks of gestation.