Clinical and functional patient characteristics predict medical needs in older patients at risk of functional decline

Table 2 Predictors of length of hospital stay (in days)

	Unadjusted			Model 1 Corrected R² = 0.038			Model 2 Corrected R² = 0.147
	β or B	95% CI	P	β or B	95% CI	P	β or B	95% CI	P
Age (years)	− 0.19	− 0.66;-0.13	0.004*	− 0.22	− 0.34;-0.09	0.001†	− 0.27	− 0.39;0.14	< 0.001†
Sex (male vs female)	1.203	−2.28;4.69	0.497	1.82	− 1.62;5.23	0.299	0.26	−3.05;3.52	0.876
Number of admission diagnoses	0.28	0.16;0.41	< 0.001†
ISAR score	0.06	−0.26;0.72	0.363	0.104	− 0.02;0.23	0.108
ADL impairment (yes vs no)	6.66	3.31;10.01	< 0.001†				8.03	4.43;11.88	< 0.001†
Mobility impairment (yes vs no)	1.47	−2.11;5.05	0.481				−2.08	−6.21;1.66	0.311
Cognition impairment (yes vs no)	3.35	−0.07;6.78	0.055				3.77	0.50;7.05	0.024*
Signs of depression (yes vs no)	6.69	1.43;11.94	0.013*				6.43	1.19;11.67	0.016*
				Model 3 Corrected R² = 0.143			Model 4 Corrected R² = 0.197
				β or B	95% CI	P	β or B	95% CI	P
Age (years)				−0.27	−0.40;-0.14	< 0.001†	− 0.26	− 0.38;-0.14	< 0.001†
Sex (male vs female)				0.25	−3.05;3.56	0.880	0.04	−3.19;3.21	0.982
Number of admission diagnoses							0.24	0.12;0.36	< 0.001†
ISAR score				0.00	−0.13;0.13	0.966	0.00	−0.12;0.13	0.957
ADL impairment (yes vs no)				8.05	4.19;11.91	< 0.001†	7.38	3.72;11.26	< 0.001†
Mobility impairment (yes vs no)				−2.03	−5.97;1.91	0.312	−2.44	−6.46;1.19	0.210
Cognition impairment (yes vs no)				3.78	0.48;7.08	0.025*	3.72	0.50;6.89	0.023*
Signs of depression (yes vs no)				6.43	1.18;11.69	0.017*	5.85	0.78;10.95	0.025*

ADL activities of daily living, ISAR Identification of Seniors at Risk, beta, standardized regression coefficient, B unstandardized regression coefficient, CI confidence interval, *p ≤ 0.05 or † p ≤ 0.001

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