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Threshold Effect Analysis of Handgrip Strength on Depression Using a Two-Piecewise Regression Model
| Outcome | Depression Adjusted OR (95% CI) | P-value |
|---|---|---|
| Fitting model by two-piecewise linear regression | ||
| Turning point of handgrip strength | 35.6kg | |
| ≤Turning point | 0.95(0.95, 0.96) | <0.001 |
| >Turning point | 0.99 (0.97, 1.01) | 0.287 |
Note: Adjusted for age, gender, BMI, frailty, and cognitive impairment.
