Single factor analysis of severe CRF
The results of single factor analysis showed that per capita monthly income (P <0.001), whether long-term passive smoking (P <0.001), exercise (P <0.001), diagnosis type (P =0.001), uncertainty in illness (P =0.018), coping style (P <0.001), PSS (P <0.001), and SOC (P <0.001) were the influencing factors of severe CRF in CC patients. Table 2 showed the details.