R²

Standardized Coefficients Beta

Sig.

Cardiac self-efficacy

0.373

−0.218

0.01

Breathlessness

0.259

0.204

0.00

Stress

0.623

0.593

0.00

Physical activity

0.102

−0.064

0.240

The final correlation included CSE breathlessness and stress

0.724

0.269

0.00