Table 3 Association of dieting related variables with change in bone mineral content from 9 to 15 years
From: Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls
Model no. | Variable | B | 95% CI | β | Semi-partial R2 | p |
|---|---|---|---|---|---|---|
1. | Base model (used in all analyses, R2 = 0.63) | |||||
Change in height from 9 to 15y (cm) | 21.9 | 16.1, 27.7 | 0.55 | 0.10 | < 0.0001 | |
Change in weight from 9 to 15y (kg) | 3.77 | 0.55, 7.00 | 0.20 | 0.24 | 0.02 | |
BMC at 9y (g) | 0.61 | 0.47, 0.75 | 0.53 | 0.26 | < 0.0001 | |
BMI percentile at 15y | 2.11 | 0.91, 3.30 | 0.31 | 0.03 | 0.0007 | |
Breast Tanner score at 9y | −26.9 | −55.4, 1.5 | − 0.13 | 0.003 | 0.06 | |
Frequency of physical activity at 9y | 0.03 | −2.31, 2.37 | 0.001 | 0.00 | 0.98 | |
2. | Dieting variables (individually tested with base model) | |||||
Ever dieted | −25.5 | −69.7, 18.8 | −0.06 | 0.00 | 0.26 | |
3. | Dieted by 11y | −46.9 | −86.6, −7.1 | − 0.13 | 0.01 | 0.02 |
4. | Dieted after 11y (n = 94, excludes early dieters) | −25.4 | − 71.8, 21.0 | − 0.07 | 0.00 | 0.28 |
5. | Number of weight control strategies used at 11y | −13.0 | −23.7, − 2.21 | −0.14 | 0.02 | 0.02 |
6. | DEBQ at 11y | |||||
Restraint | −35.0 | −61.3, −8.81 | −0.15 | 0.02 | 0.009 | |
7. | Disinhibition | −24.7 | −56.2, 6.88 | −0.08 | 0.01 | 0.12 |
8. | chEAT at 11y | |||||
Dieting | −17.9 | − 32.1, − 3.79 | −0.15 | 0.02 | 0.01 | |
9. | Food Preoccupation | −14.3 | −63.8, 35.2 | −0.03 | 0.00 | 0.57 |
10. | Social Pressure to Eat | −1.30 | −21.9, 19.3 | −0.01 | 0.00 | 0.90 |
11. | Total score | −3.17 | −8.42, 2.08 | −0.07 | 0.00 | 0.24 |
12. | Weight Concerns at 11y | −47.2 | −82.9, −11.4 | −0.16 | 0.02 | 0.01 |
13. | Weight-Related Body Esteem at 11y | 23.5 | −5.6, 52.6 | 0.11 | 0.01 | 0.10 |