Table 2.
Subjects Who Completed the Study Compared to Subjects Exited Before Delivery1
| Maternal Characteristic | Delivered | Exited | p-value |
|---|---|---|---|
| N=350 | N=129 | ||
| Treatment Group, N (%): | 0.5 | ||
| 400 IU | 111 (74.0) | 39 (26.0) | |
| 2000IU | 122 (79.7) | 31 (20.3) | |
| 4000IU | 117 (75.5) | 38 (24.5) | |
|
| |||
| Ethnicity,2 N (%): | 0.003 | ||
| African American | 98 (66.7) | 49 (33.3) | |
| Hispanic | 137 (81.1) | 32 (18.9) | |
| Caucasian | 115 (81.0) | 27 (19.0) | |
|
| |||
| Maternal Age (years), Mean ± SD | 27.0 ± 5.6 | 25.5 ± 5.1 | 0.01 |
| Range | 17–44 | 18–42 | |
|
| |||
| Gestational Age at Enrollment (weeks), | 0.053 | ||
| Mean ± SD | 12.5 ± 1.8 | 12.1 ± 2.1 | |
| Range3 | 6.3–21.4 | 6.1–17.7 | |
|
| |||
| Maternal Gravidity, Median (range) | 2.0 (0–9) | 3.0 (1–10) | <.0001 |
|
| |||
| Education, N (%): | 0.01 | ||
| < High School Education | 54 (73.0) | 20 (27.0) | |
| High School graduate | 63 (71.6) | 25 (28.4) | |
| College or more | 216 (84.4) | 40 (15.6) | |
|
| |||
| Employed at Entrance into Study, N (%) | 0.04 | ||
| Yes | 193 (81.1) | 45 (18.9) | |
| No | 157 (44.9) | 48 (51.6) | |
|
| |||
| Insurance, N (%): | 0.4 | ||
| Medicaid/None | 216 (75.3) | 71 (24.7) | |
| Commercial | 134 (78.4) | 37 (34.3) | |
|
| |||
| Subjective Health Rating Scale,4 Median (range) | 9.0 (1–10) | 9.0 (5–10) | 0.6 |
|
| |||
| Planned Pregnancy, N (%) | 0.01 | ||
| Yes | 179 (51.7) | 34 (37.4) | |
| No | 167 (74.6) | 57 (25.5) | |
|
| |||
| BMI,5 N (%): | 0.02 | ||
| ≤30 | 254 (73.8) | 90 (26.2) | |
| > 30 | 96 (84.2) | 18 (15.8) | |
|
| |||
| Season at study entry, N (%): | 0.6 | ||
| April – September | 170 (75.9) | 54 (24.1) | |
| October – March | 180 (77.9) | 51 (22.1) | |
|
| |||
| Baseline 25(OH)D, nmol/L, Mean ± S.D. (range) | |||
| Total | 59.5 ± 23.8 (6.0–172.5) | 50.5 ± 25.1 (6.5–120.5) | 0.001 |
| African American | 39.4 ± 18.6 (6.0–108.8) | 37.4 ± 17.6 (6.5–87.8) | 0.6 |
| Hispanic | 59.3 ± 20.0 (17.3–103.8) | 54.7 ± 20.6 (23.0–95.3) | 0.3 |
| Caucasian | 74.6 ± 20.2 (29.5–172.5) | 68.8 ± 28.8 (23.3–120.5) | 0.2 |
1
Exited included those patients who chose not to continue. It does not include those with pregnancy losses, who became medically ineligible or who moved from geographic area.
2
Race/Ethnicity as defined by mother
3
Gestational age at enrollment based on last menstrual period; change of gestational age occurred in 11 cases at time of 20 week fetal ultrasound.
4
Self-reported maternal health status rating from 1 (poor) to 10 (excellent)
5
BMI, Prepregnancy body mass index (BMI)