Predictors of injection fear (based on multivariate analysis):
(1) watching other people receive injections
(2) needle size
(3) fear of pain
(4) history of fainting following an injection
Factors associated with past fainting (based on multivariate analysis):
(1) prior bad experience with injections
(2) unreasonable fear of injections
(3) fear of needles
Factors reducing injection fear:
(1) empathy shown by the medical team
Other factors affecting outcome (from univariate analysis or observations):
(1) A warm room tends to trigger fainting during and after the injections.
(2) Younger patients tend to be more concerned about receiving injections.
(3) A person who feels that the vaccine is necessary is more committed to the process.
(4) Watching the nurse prepare the syringe can cause apprehension in some patients.
