Derivation of a frailty index from the resident assessment instrument – home care adapted for Switzerland: a study based on retrospective data analysis

Table 2 Results of logistic regressions assessing the effect of FI, age, and sex on adverse health outcomes

	OR	95% CI	Wald	p-value
Falls ^a
FI	5.00	[2.68–9.38]	26.12	< 0.001
Age	1.01	[1.00–1.03]	7.48	0.006
Sex^c	0.96	[0.81–1.14]	0.28	0.598
Hospitalizations ^a
FI	3.40	[1.78–6.32]	15.53	< 0.001
Age	0.98	[0.97–0.99]	11.81	0.001
Sex^c	1.13	[0.96–1.33]	2.06	0.152
Death ^b
FI	9.99	[3.20–29.99]	16.50	< 0.001
Age	1.04	[1.01–1.07]	11.27	0.001
Sex^c	2.37	[1.72–3.36]	27.04	< 0.001

OR Odd ratio, 95% CI 95% Confidence interval, Wald Wald Chi-square value. Values estimated by bootstrapping (N = 1000). ^aSample of 2816 individuals; ^bSample of 3714 individuals; ^cFemales used as reference

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