Table 3. Change-Point Regression Model of Association of Lifestyle Factors With Cerebral Glucose Metabolism and Cortical Amyloid Burden.
| Lifestyle factor | B (knot) | Bootstrap 95% CI |
|---|---|---|
| PiB mean SUVR | ||
| TST, min/d | −0.0018 (325) | −0.0031 to −0.0007 |
| FDG mean SUVR | ||
| Walking steps, steps/d | 0.00001 (10000) | −0.0002 to 0.0001 |
| Conversation time, min/d | 0.0001 (150) | −0.0001 to 0.0003 |
| Sleep efficiency, %/d | −0.0037 (92) | −0.0096 to 0.003 |
Abbreviations: FDG, fluorine-18 fluorodeoxyglucose; PiB, carbon-11 labeled Pittsburgh compound B; SUVR, standardized uptake value ratio; TST, total sleep time.