Table 6.

Simultaneous Multiple Linear Regression Model: Prediction of Memory Recall from CDS Praxis

Overall Model: Adjusted R²= .161, F=3.415 (p=.003)

Independent Variable	Unstandardized b	SE	Semi-partial Correlation	p
Age	−0.218	0.132	−.162	0.102
Sex
Male	Reference
Female	−0.031	1.711	−.002	0.986
Pack-years	0.010	0.027	.037	0.709
Estimated Premorbid IQ (WRAT-IV)	0.297	0.114	.255	0.011
Depression and Anxiety (HADS)	−0.335	0.193	−.170	0.085
COPD Diagnosis
No COPD	Reference
COPD	−1.646	1.885	−.085	0.385
CDS Praxis
No Impairment	Reference
Yes Impairment	−4.598	1.751	−.256	0.010

Note: The variables are bolded if they were significant (p<.05).