Table 4.
Controlled transdiagnostic variable | Partial correlation | Partial correlation with covariates |
---|---|---|
Change in rumination | ||
r | −0.158 | −0.144 |
p value | 0.032 | 0.055 |
df | 183 | 176 |
Change in intrusive thoughts | ||
r | −0.149 | −0.142 |
p value | 0.043 | 0.059 |
df | 183 | 176 |
Change in thought suppression | ||
r | −0.155 | −0.140 |
p value | 0.035 | 0.063 |
df | 183 | 176 |
Change in avoidance | ||
r | −0.144 | −0.286 |
p value | 0.282 | 0.042 |
df | 56 | 49 |
Change in cognitive reappraisal | ||
r | −0.178 | −0.161 |
p value | 0.015 | 0.032 |
df | 184 | 176 |
Change in expressive suppression | ||
r | −0.151 | −0.129 |
p value | 0.039 | 0.085 |
df | 184 | 176 |
Note. Bivariate correlation between change in mindfulness and change in sleep quality was r = −0.211, df = 186, p = 0.004. All partial correlations were lower, indicating that each transdiagnostic variable uniquely accounted for part of the original association between increased mindfulness and increased sleep quality. After accounting for changes in transdiagnostic variables, the correlation between change in mindfulness and change in stress-related symptoms remained statistically significant, except for change in avoidance, which was measured in fewer cases. Further controlling for covariates did not substantively change the magnitude of partial correlations nor the p values; however, four p values become marginally significant, and one (for change in avoidance) dropped markedly.