Table 1.
Baseline Characteristics of Study Participants*
| AL N=75 | CR N=143 | P value† | |
|---|---|---|---|
| Age, y | 37.9 ± 6.9 | 38.0 ± 7.2 | 0.89 |
| Sex, no (%) | |||
| Male | 22 (29.3) | 44 (30.8) | 0.88 |
| Female | 53 (70.7) | 99 (69.2) | |
| Race, no (%) | |||
| Black or African American | 11 (14.7) | 15 (10.5) | 0.62 |
| White | 57 (76.0) | 111 (77.6) | |
| Other | 7 (9.3) | 17 (11.9) | |
| Ethnicity, no (%) | |||
| Hispanic or Latino | 4 (5.3) | 3 (2.1) | 0.27 |
| Not Hispanic or Latino | 71 (94.7) | 138 (96.5) | |
| Unknown | 0 (0.0) | 2 (1.4) | |
| Marital Status, no (%) | |||
| Married | 44 (58.7) | 86 (60.1) | 0.81 |
| Divorced | 6 (8.0) | 9 (6.3) | |
| Single | 24 (32.0) | 47 (32.9) | |
| Widowed | 0 (0.0) | 1 (0.7) | |
| Separated | 1 (1.3) | 0 ( 0.0) | |
| Education, no (%) | |||
| Elementary | 0 (0.0) | 0 ( 0.0) | 0.10 |
| 9-12th grade | 6 (8.0) | 2 (1.4) | |
| College | 46 (61.3) | 88 (61.5) | |
| Non doctoral graduate degree | 17 (22.7) | 37 (25.9) | |
| Doctoral degree | 6 (8.0) | 16 (11.2) | |
| Height, m | 168.4 ± 8.3 | 168.9 ± 8.6 | 0.91 |
| Weight, kg | 71.3 ± 8.6 | 71.8 ± 9.2 | 0.96 |
| Body mass index, kg/m2 | 25.1 ± 1.6 | 25.1 ± 1.7 | 0.90 |
| Bone mineral density, z-score | |||
| Lumbar spine | −0.5 ± 1.5 | −0.2 ± 1.0 | 0.26 |
| Total hip | −0.0 ± 0.8 | −0.0 ± 0.8 | 0.73 |
| Femoral neck | −0.2 ± 0.9 | −0.2 ± 0.9 | 0.90 |
| Oral contraceptive use in women, no (%) | |||
| Yes | 10 (18.9) | 22 (22.2) | 0.68 |
| No | 43 (81.1) | 77 (77.8) |
*
Values are given as mean ± SD or number (percentage) of participants unless otherwise specified.
†
P-values as calculated by Wilcoxon test for continuous and ordinal values and Fisher exact test for categorical values.