Analysis of the physiological data and self-reported anxiety supports the conclusion that the reduction in vasovagal symptoms was due more to decreased anxiety rather than exercise-related cardiovascular change. These results suggest that AT may provide a useful means of coping with invasive medical procedures in part by reducing anxiety.

These results suggest that simple interventions can be effective in increasing nondonors' intention to donate blood and, perhaps, actual attendance. The mediational analyses suggest that interventions can selectively target different barriers associated with blood donation.

The anticipation or belief of blood loss, and perhaps more remotely associated ideas, may trigger processes similar to those induced by actual hemorrhage though further research is required to address other possibilities such as the inflation of ratings by vasovagal symptoms.

Seeing another donor being treated for symptoms contributed to the vasovagal process in many donors. This environment provides a useful context to study social influences on symptoms and illness.

Specifically, when no orthostatic stress is involved, TSO in VVS patients can be predicted with high accuracy from a set of only five ECG features.