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Estimates of nonlinear associations of intra-trial plasma 25(OH)D and risk of falling from quadratic regressions
| Unadjusted model | Adjusted modela | |||
|---|---|---|---|---|
| β (SE) | P-value | β (SE) | P-value | |
| Linear 25(OH)D | −0.15 (0.064) | 0.017 | −0.15 (0.069) | 0.025 |
| Quadratic 25(OH)D | 0.003 (0.001) | 0.018 | 0.003 (0.001) | 0.027 |
| Overallb | — | 0.031 | — | 0.048 |
aAdjusted for age, sex, and total calcium intake.
bOverall P-value tests both linear and quadratic terms based on the likelihood ratio test (chi-squared).
