Table 1.

Unadjusted and adjusted Hazard Ratio (HR) from Cox proportional hazards modeling for length-of-stay in the AgeBru cohort (N = 224).

	Unadjusted model		Adjusted model 1		Adjusted model 2
	HR [95% CI]	P-value	HR [95% CI]	P-value	HR [95% CI]	P-value
GNRI at high risk (≤98)	0.90 [0.68–1.19]	0.454	0.93 [0.70–1.24]	0.623	0.97 [0.72–1.32]	0.847
Each additional year of age	0.99 [0.97–1.00]	0.030	0.98 [0.96–1.00]	0.022	0.97 [0.95–0.99]	0.014
Being of female sex	0.94 [0.72–1.22]	0.632	0.93 [0.70–1.22]	0.599	0.91 [0.68–1.20]	0.497
Being cohabiting with partner	0.81 [0.622–1.06]	0.124	0.91 [0.68–1.21]	0.516	0.91 [0.68–1.21]	0.509
Each additional point on Katz index	0.97 [0.94–1.00]	0.069	–		–
Each additional point of CRP	1.00 [1.00–1.00]	0.968	–		0.99 [1.00–1.00]	0.354
Each additional point of BMI	1.02 [1.00–1.05]	0.036	–		–
History of hypertension	0.88 [0.63–1.23]	0.464	1.04 [0.71–1.52]	0.826	1.06 [0.73–1.55]	0.754
History of diabetes mellitus	1.06 [0.80–1.38]	0.685	0.92 [0.69–1.21]	0.542	0.92 [0.70–1.22]	0.585
History of cardiopathy	0.76 [0.58–0.99]	0.040	0.82 [0.60–1.12]	0.215	0.81 [0.59–1.10]	0.183
History of chronic respiratory disease	0.94 [0.69–1.27]	0.677	0.88 [0.63–1.22]	0.433	0.90 [0.64–1.25]	0.527
History of cognitive impairment	0.60 [0.45–0.80]	0.000	–		–
History of cancer	0.71 [0.53–0.96]	0.027	0.68 [0.49–0.94]	0.019	0.67 [0.48–0.93]	0.015

BMI: body mass index; CI: confidence interval; CRP: C-reactive protein; GNRI: Geriatric Nutritional Risk Index. Two groups of patients were defined according to the risk level: Patients at high risk (GNRI ≤98) and patients at low risk (GNRI >98). Adjusted model 1: Age, sex, cohabiting with partner, hypertension, diabetes mellitus, cardiopathy, chronic respiratory disease, and cancer were used as adjusting variables. Adjusted model 2: Same model 1 with the C-reactive protein (CRP) as added adjusting variable.