Table 6.

Prediction of Cognitive Functioning Scale total score by the 5 clusters (N = 169)

Cluster	R2	Adjusted R2	Std. Error of the Estimate	R2 Change	Sig. F, Change
1. Sociodemograpic	0.08	0.07	4.27	8%	<0.01*
2. Clinical	0.10	0.05	4.30	1%	0.77
3. Physical	0.29	0.24	30.86	19%	<0.01*
4. Mental	0.44	0.39	30.45	16%	<0.01*
5. Objective cognitive factors	0.45	0.39	30.44	1%	0.29
		Unstandardized Coefficients		Standardized Coefficients
Variables of final model (5)		B	Std. Error	Beta	Sig.
(Constant)		25.70	4.60		<0.01*
Sex		−2.18	0.60	−0.25	<0.01*
Age		0.02	0.03	0.04	0.58
Education		−0.32	0.60	−0.04	0.59
Hemisphere		−1.01	0.60	−0.11	0.10
Antiepileptic drugs		−0.32	0.70	−0.03	0.65
Radiotherapy		−0.25	0.58	−0.03	0.66
Chemotherapy		−1.18	1.04	−0.08	0.26
Disease duration		0.03	0.05	0.04	0.60
SF-36 physical component summary score		0.04	0.04	0.08	0.30
QLQ BN-20 visual disorder		−0.02	0.19	−0.01	0.92
QLQ BN-20 motor dysfunction		−0.77	0.23	−0.26	0.00
SF-36 mental component summary score		0.09	0.03	0.21	0.01*
MFI mental fatigue		−0.29	0.09	−0.24	<0.01*
QLQ BN-20 communication deficit		−0.51	0.16	−0.23	<0.01*
QLQ BN-20 future uncertainty		0.29	0.13	0.19	0.02
Attention and executive factor		0.46	0.32	0.10	0.16
Verbal memory factor		0.17	0.31	0.04	0.59

Abbreviations: MFI, Multidimensional Fatigue Inventory; QLQ BN-20, Brain cancer specific Quality of Life Questionnaire; SF-36, Medical Outcomes Study Short-Form 36; Std., standard; Sig., significant 1.