Table 4

Results of negative binomial regression analyses

Predictive variable	Coefficient	95% CI		p
Predictive variable	Coefficient	lower	upper	p
Model 1
PCAM	0.054	0.038	0.070	0.001
Age	0.0098	−0.000082	0.020	0.052
Gender	−0.19	−0.43	0.045	0.11
Model 2
PCAM	0.055	0.036	0.074	0.001
Age	0.0094	−0.0014	0.020	0.088
Gender	−0.20	−0.45	0.048	0.1
Mini Nutritional Assessment Short-Form	−0.000059	−0.039	0.039	1.00
Charlson Comorbidity Index	0.000096	−0.061	0.062	1.00
Serum sodium concentration	0.0096	−0.012	0.032	0.39
No. of medications	−0.011	−0.044	0.021	0.50
Requiring public assistance	0.089	−0.21	0.39	0.57
Model 3
Medicine-oriented complexity	0.076	0.031	0.12	0.001
Patient-oriented complexity	0.041	0.012	0.071	0.006
Age	0.0090	−0.00094	0.019	0.076
Gender	−0.21	−0.45	0.029	0.085
Model 4
Medicine-oriented complexity	0.083	0.035	0.13	0.001
Patient-oriented complexity	0.039	0.0080	0.071	0.014
Age	0.0083	−0.0026	0.019	0.14
Gender	−0.23	−0.48	0.023	0.075
Mini Nutritional Assessment Short-Form	−0.0016	−0.041	0.038	0.94
Charlson Comorbidity Index	−0.0075	−0.070	0.055	0.81
Serum sodium concentration	0.010	−0.012	0.032	0.36
No. of medications	−0.0092	−0.042	0.023	0.58
Requiring public assistance	0.12	−0.19	0.43	0.44