The final list of research questions and scoring criteria were
sent to the original group of 600 experts with an invitation
to score them. Each research question was assessed by the
expert and received a score of 1.0, 0.5 or 0 for five preset
criteria, with the option of not assigning any score in case
the expert did not feel confident to decide on that criterion.
Scoring took place over eight weeks and was conducted and
returned to the coordinators at the WHO by 91 experts.