Quality of Life in Bipolar Type I Disorder in a One-Year Followup

Table 4

Correlation coefficients of the psychological domain scores of WHOQOL-BREF with the severity of clinical symptoms and level of functioning in bipolar disorder group at baseline, 4-, 8-, 12-month assessments.

Assessment	Model		Unstandardized coefficients		Standardized coefficients	𝑇	𝑃 value	𝑅	𝑅 square	Adjusted 𝑅 square	Collinearity statistics (VIF)
			𝐵	St. Er	Beta
Baseline (𝑁=57)	1	HDRS	−1.62	0.49	−0.41	−3.30	<0.01	0.41	0.17	0.15	1.00
	2	HDRS	−1.80	0.45	−0.45	−3.98	<0.001	0.56	0.31	0.29	1.01
		YMRS	0.88	0.26	0.38	3.38	<0.001				1.01
4-month (𝑁=48)	1	HDRS	−1.38	0.39	−0.47	−3.58	<0.001	0.47	0.22	0.20	1.00
8-month (𝑁=44)	1	HDRS	−1.65	0.39	−0.55	−4.28	<0.001	0.55	0.30	0.29	1.00
	2	HDRS	−2.16	0.37	−0.72	−5.84	<0.001	0.68	0.47	0.44	1.18
		YMRS	1.09	0.31	0.44	3.56	<0.001				1.18
12-month (𝑁=45)	1	HDRS	−1.01	0.24	−0.54	−4.24	<0.001	0.54	0.29	0.28	1.00

HDRS: Hamilton-Depression Rating Scale.
YMRS: Young Mania Rating Scale.