In univariate analyses , symptom severity was associated with a higher risk of CV death or HF hospital stay ( fatigue : group @ , @ % -LSB- n = @ -RSB- , vs. group @ , @ % -LSB- n = @ -RSB- ; dyspnea : group @ , @ % -LSB- n = @ -RSB- , vs. group @ , @ % -LSB- n = @ -RSB- ) and all-cause mortality ( fatigue : group @ , @ % -LSB- n = @ -RSB- , vs. group @ , @ % -LSB- n = @ -RSB- ; dyspnea : group @ , @ % -LSB- n = @ -RSB- , vs. group @ , @ % -LSB- n = @ -RSB- , log-rank p < @ for all ) .