Psychosocial factors as predictors of quality of life in chronic portuguese patients

Table 3 Psychosocial factors associated with HRQL and SWB: results of multivariate tests of MANCOVA analysis*

	Value Roy’s largest root	F_{(4, 667)}	p	Observed power^a
Dispositional Optimism	0.02	3.57	0.007	0.87
Positive Affect	0.08	13.01	<0.001	1.00
Negative Affect	0.32	53.45	<0.001	1.00
Spirituality	0.13	21.24	<0.001	1.00
Social Support	0.04	6.73	<0.001	0.99
Treatment Adherence	0.02	2.89	0.022	0.78

*Controlling for sex, age, education level, time since diagnosis and severity of disease perception.
^aThe observed power gives the probability that the F test will detect the differences between groups equal to those implied by sample difference.

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