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.

AssessmentModelUnstandardized coefficientsStandardized coefficients value squareAdjusted squareCollinearity statistics (VIF)
St. ErBeta

Baseline ( )1HDRS−1.000.41−0.31−2.42<0.050.310.100.081.00

4-month ( )1YMRS−0.690.25−0.38−2.73<0.010.380.140.121.00
2YMRS−0.690.24−0.37−2.81<0.010.470.220.191.00
Sex−9.684.55−0.28−2.13<0.051.00

8-month ( )1HDRS−1.360.36−0.54−4.19<0.0010.540.300.291.00
2HDRS−1.420.30−0.57−4.69<0.0010.630.400.371.01
Sex−13.194.86−0.33−2.72<0.051.01

12-month ( )1HDRS−0.990.33−0.42−2.96<0.010.420.170.151.00

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