Nested multivariate linear regression analyses for HRQoL scores of stable angina patients (n = 411).

***P<0.01; **P<0.05; *P<0.10.
aOnly variables with statistically significant results were displayed. Except variables listed in the table, other explanatory variables included duration of CAD and presence of acute medical condition in block1, age, BMI, working status, household income, and marriage status in block 2, smoke, and drinking for block 3.