Table 1.
Baseline Characteristics of Compliant Participants
| N (%) or mean ± SD and p values for comparisons by group | |||||
|---|---|---|---|---|---|
| Variable | Category | IBUP/PLAC | PLAC/PLAC | PLAC/IBUP | p Value |
| Hormonal contraceptives | No | 9 (52.9) | 14 (60.9) | 7 (50.0) | 0.784 |
| Yes | 8 (47.1) | 9 (39.1) | 7 (50.0) | ||
| Ethnicity | White | 14 (82.4) | 20 (87.0) | 14 (100.0) | 0.404 |
| Hispanic | 2 (11.8) | 2 (8.7) | 0 (0.0) | ||
| Other | 1 (5.9) | 1 (4.3) | 0 (0.0) | ||
| Age, years | 30.8 ± 6.2 | 33.2 ± 5.3 | 32.1 ± 5.0 | 0.418 | |
| BMI, kg/m2 | 24.0 ± 4.5 | 23.6 ± 2.8 | 23.6 ± 3.0 | 0.935 | |
| Height, cm | 165.0 ± 8.5 | 167.2 ± 7.8 | 165.2 ± 5.7 | 0.580 | |
| Weight, kg | 66.5 ± 9.3 | 67.0 ± 9.8 | 64.9 ± 9.4 | 0.795 | |
| Fat mass, kg | 21.5 ± 5.2 | 22.5 ± 6.7 | 21.0 ± 7.3 | 0.775 | |
| Fat-free mass, kg | 45.0 ± 5.1 | 44.5 ± 5.1 | 43.8 ± 5.2 | 0.821 | |
| BMD, g/cm2 | |||||
| Total hip | 1.005 ± 0.112 | 0.982 ± 0.128 | 0.978 ± 0.116 | 0.782 | |
| Femoral neck | 0.896 ± 0.127 | 0.886 ± 0.114 | 0.915 ± 0.125 | 0.793 | |
| Trochanter | 0.755 ± 0.105 | 0.760 ± 0.098 | 0.754 ± 0.127 | 0.980 | |
| Shaft | 1.184 ± 0.118 | 1.150 ± 0.166 | 1.128 ± 0.130 | 0.552 | |
| Lumbar spine | 1.092 ± 0.124 | 1.130 ± 0.122 | 1.061 ± 0.152 | 0.293 | |
IBUP = ibuprofen; PLAC = placebo; BMI = body mass index; BMD = bone mineral density.