Table 2.
Correlations of clinical and diffusion indices in SCD (N = 31), significance at p < 0.05.
| Measurement | Tract | Diffusion index | Correlation coefficient (rs) | p |
|---|---|---|---|---|
| IPAQ-SF MET | CST pyramids (R) | FA | 0.373 | 0.039 |
| MD | −0.389 | 0.031 | ||
| PCR (R) | FA | 0.501 | 0.004** | |
| PCR (L) | FA | 0.429 | 0.016 | |
| PTR (R) | MD | −0.412 | 0.021 | |
| PTR (L) | MD | −0.437 | 0.014 | |
| SARC-F | PCR (R) | FA | −0.432 | 0.015 |
| EC (R) | FA | −0.423 | 0.018 | |
| MoCA | ICP (R) | FA | 0.463 | 0.009* |
| MD | −0.642 | <0.001** | ||
| ICP (L) | FA | 0.394 | 0.028 | |
| MD | −0.527 | 0.002** | ||
| CST pyramids (R) | MD | −0.533 | 0.002** | |
| Fornix (L) | MD | −0.468 | 0.008* | |
| AL-IC (L) | MD | −0.368 | 0.042 | |
| PCR (R) | FA | 0.375 | 0.038 | |
| SCP (R) | MD | −0.414 | 0.021 | |
| EC (R) | MD | −0.427 | 0.017 | |
| Cin (L) | MD | −0.369 | 0.041 | |
| AD8 | ICP (R) | MD | −0.374 | 0.038 |
| SFOF (L) | FA | 0.363 | 0.045 | |
| AL-IC (R) | MD | −0.415 | 0.020 |
A correlation coefficient by Spearman's correlation coefficient (rs) in the 31 participants of the SCD group who agreed to undergo DTI study. This table summarized the statistically significant correlations at a confidence level of 95%.
p < 0.01.
A false discovery rate corrected p < 0.05.
rs, Spearman's correlation coefficient; SCD, subjective cognitive decline; IPAQ-SF MET, metabolic equivalent (minute per week) of the international physical activity questionnaire-short form; MoCA, Montreal cognitive assessment; R, right; L, left; CST pyramids, pyramids segment of the corticospinal tract; PCR, posterior corona radiata; PTR, posterior thalamic radiation, including optic radiation; EC, external capsule; ICP, inferior cerebellar peduncle; AL-IC, anterior limb of internal capsule; SCP, superior cerebellar peduncle; Cin, cingulum; SFOF, superior fronto-occipital fasciculus; FA, fractional anisotropy; MD, mean diffusivity.