Table 3. Correlations between ovarian hormones and binge eating in study 2(n=9)a.
| Twin | df | Correlation, r | ||
|---|---|---|---|---|
| Estradiolb | Progesteronec | |||
| All subjects | – | 8 | −0.23*** | 0.27*** |
| Family 1 | A | 0.07 | −0.21 | |
| B | 0.43 | 0.88 | ||
| Family 4 | A | −0.27 | −0.33 | |
| B | −0.37 | 0.13 | ||
| Family 5 | A | −0.24 | 0.31 | |
| B | −0.43 | −0.006 | ||
| Family 7 | A | −0.63 | 0.49 | |
| Family 8 | A | −0.36 | 0.33 | |
| B | −0.12 | 0.34 | ||
df, Degrees of freedom.
a
Although twins were treated as individuals in analyses, they are grouped by family here to allow examination of within-family similarities in correlations. Families 1, 5, 7 and 8 are monozygotic twin pairs, while family 4 is a dizygotic twin pair.
b
Values are partial correlations that control for negative affect [measured with the Positive and Negative Affect Schedule (PANAS)] and progesterone.
c
Values are partial correlations that control for negative affect (measured with the PANAS) and estradiol.
***
p<0.001.