Table 5

Multivariable linear regression analysis of patients’ perceived beliefs about medication overuse

	Unstandardised β coefficients	95% CI for β coefficient		P value
	Unstandardised β coefficients	Lower bound	Upper bound	P value
(Constant)	1.929	0.686	3.172	0.003
Sex: female vs male	0.080	−0.094	0.254	0.365
Age group ≥76 years	0.232	0.041	0.424	0.018
Collaboration with PCP	0.110	0.006	0.214	0.038
Trust in PCP	0.174	−0.026	0.373	0.088
Patient involvement in DM	−0.009	−0.122	0.104	0.873
Unimportance of medicines	0.237	0.045	0.429	0.016
Interest in stopping medicines	0.001	−0.169	0.170	0.993
PCP knowledge	−0.104	−0.268	0.059	0.210
Medication concern	−0.067	−0.198	0.064	0.314
Post-traumatic stress disorder	0.378	0.066	0.690	0.018
Number of prescribed medicines last night ≥5 medications	0.303	0.018	0.588	0.038
Level of comfort in stopping a medicine prescribed by a PCP if told to do so by a clinical pharmacist	0.342	0.106	0.579	0.005
If yes, has this PCP prescribed medicines for you?	0.283	0.027	0.538	0.030

Dependent outcome variable: Patients' overall mean perceived medication overuse score. Model R²=0.250, adjusted R²=0.157. Model significance: f (13,186) =5.04, p<0.001.
DM, decision-making; PCP, primary care provider.