Table 4.

Linear Regression Model Estimates for Total Health Care Costs.

	Regression coefficients	95% CI	p-Value
Intercept	−46,330	−80,494.4 to −12,171.4	.008*
Study group (IG)	1,183	−261.6 to 2,627.6	.108
Total costsa	1,338	1.3–1.4	<.001*
Length of study observation	1,882	882.2–2,880.9	<.001*
Gender (female)	−1,981	−3,433.7 to −528.2	.008*
preFrailtyb	2,516	290.4–4,741.5	.027*
Frailtyb	1,602	43.4–3,159.7	.044*
Long-term care gradeb	3,767	994.5–6,540.5	.008*
CCI Scorea	528.9	182.6–875.2	.003*
Age	−128.1	−258.1 to 1.8	.053
Death	27,100	20,449.9–33,741.0	<.001*

CCI = Charlson Comorbidity Index; CI = confidence interval.

^a = previous year.

^b = baseline.

^*Statistical significance (p < .05), adjusted R²: 0.4334.