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Table 1 Participation in All Phases of the Study

From: Conducting Online Expert panels: a feasibility and experimental replicability study

Participation Characteristics Panel A Panel B Panel C Panel D Total
Total number of invited participants 21 19 40 39 119
Phase I      
Number of Phase I participants 15 12 33 31 91
Participation rate in Phase I 71% 63% 83% 80% 77%
Phase II      
Number of participants posting comments in Phase II 9 6 25 16 56
% of active discussion participants 60% 50% 76% 52% 60%
Total number of discussion threads 7 6 16 11 10
Average number of threads initiated per participant .77 1 .64 .68 .77
Total number of discussion comments 18 21 89 45 43
Average number of comments per participant 2 3.5 3.6 2.8 3
Range of number of comments per participant 1-5 1-6 1-9 1-9 1-9
Phase III      
# of Phase III participants 10 10 32 27 79
Participation rate in Phase III 67% 83% 97% 87% 87%
Participation rate in all phases 48% 53% 80% 69% 66%