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

Table 6

Correlation coefficients of the environmental 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=56)	1	HDRS	−1.00	0.41	−0.31	−2.42	<0.05	0.31	0.10	0.08	1.00
4-month (𝑁=47)	1	YMRS	−0.69	0.25	−0.38	−2.73	<0.01	0.38	0.14	0.12	1.00
	2	YMRS	−0.69	0.24	−0.37	−2.81	<0.01	0.47	0.22	0.19	1.00
		Sex	−9.68	4.55	−0.28	−2.13	<0.05				1.00
8-month (𝑁=44)	1	HDRS	−1.36	0.36	−0.54	−4.19	<0.001	0.54	0.30	0.29	1.00
	2	HDRS	−1.42	0.30	−0.57	−4.69	<0.001	0.63	0.40	0.37	1.01
		Sex	−13.19	4.86	−0.33	−2.72	<0.05				1.01
12-month (𝑁=44)	1	HDRS	−0.99	0.33	−0.42	−2.96	<0.01	0.42	0.17	0.15	1.00

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