Table 3.
Correlations of diffusion indices and actigraphy in SCD (N = 15), significance at p < 0.01.
| Measurements | Tract | Diffusion | Correlation coefficient | p |
|---|---|---|---|---|
| index | (rs) | |||
| Intradaily variability (IV) | PCR (R) | FA | −0.757 | 0.001* |
| PCR (L) | FA | −0.875 | <0.001* | |
| SCR (L) | FA | −0.811 | <0.001* | |
| Interdaily stability (IS) | PCR (R) | FA | 0.771 | 0.001* |
The Spearman's correlation coefficients with p < 0.01 were considered statistically significant.
*
A false discovery rate corrected p < 0.05. The actigraphy was recorded by the wearing device (SOMNOwatchTM) for 72 activities in 15 SCD participants.
rs, Spearman's correlation coefficient; SCD, subjective cognitive decline; FA, fractional anisotropy; PCR, posterior corona radiata; SCR, superior corona radiata.