Secondary outcomes
bruising, loss of consciousness, rebleeds, non-VVR adverse
ADVERSE EVENTS, EVENT, APPENDIX, SECONDARY
Secondary outcomes are (i) all in-session VVRs (i.e. with and without loss of consciousness); (ii) all delayed VVRs (i.e. VVRs with and without loss of consciousness after leaving the donation venue); (iii) delayed VVRs with loss of consciousness; and (iv) any in-session non-VVR adverse events or reactions, such as bruising and rebleeds.All outcomes will be assessed at the end of the trial and will involve comparison of event rates in periods with and without interventions applied (Appendix 1). The data on the primary and secondary outcomes will be complete by design, as the recording of on-session adverse events, including VVRs, is mandatory in the blood service.