Table 2.

Associations of 25(OH)D status with gait speed and handgrip strength: multiple linear regression analysis

	Models	β	95% CI	Standard error	P Value
Gait speed	Model 1	0.094**	0.012 to 0.177	0.0417	0.025
	Model 2	0.097**	0.021 to 0.172	0.038	0.013
	Model 3	0.161**	0.048 to 0.275	0.057	0.006
Handgrip strength	Model 1	5.172**	1.717 to 8.627	1.744	0.004
	Model 2	4.956**	1.851 to 7.291	1.373	0.001
	Model 3	3.825**	1.093 to 6.556	1.378	0.007

For gait speed, Model 1: unadjusted model; Model 2: age, BMI, and 25(OH)D; Model 3: Model 2 + albumin, potassium, serum creatinine, and iPTH For handgrip strength, Model 1: unadjusted model; Model 2: age, gender, BMI, and 25(OH)D; Model 3: Model 2 + albumin, bicarbonate, potassium, albumin-adjusted calcium, hs-CRP, serum creatinine, and spKt/V Abbreviations: BMI, body mass index; hs-CRP, high sensitivity C-reactive protein; iPTH, intact parathyroid hormone; spKt/V, single-pool Kt/V; 25(OH)D, 25-hydroxyvitamin D; * P < 0.05; ** P < 0.01