Table 4.

Association of BMI with frailty status

	Referent n = 198	Prefrail n = 206			Frail n = 36
		β (SE)	95% CI	P value	β (SE)	95% CI	P value
BMI categories
< 24 kg/m2, n = 118	Ref	1.44 (0.27)	0.85–2.44	0.174	0.60 (0.81)	0.12–2.95	0.528
24–29 kg/m2, n = 284	Ref	Ref	Ref		Ref	Ref
> 29 kg/m2, n = 208	Ref	3.26 (0.27)	1.93–5.51	< 0.001	6.65 (0.47)	2.62–16.85	< 0.001

The referent was not frail

β coefficient, standard of error (SE) and 95% confidence interval CI were calculated using multinomial logistic regression analysis

Covariates in adjusted models were age (years), energy intake (kJ/d), smoking status (never, current and former smokers), living status (living alone, live with another person and live in retirement home), marital status (unmarried, cohabiting, married, divorced, widow) and vitamin D/ calcium intervention group