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[Comparison of mail and meeting forms in evaluation of Delphi study]
Yan-min Wang1, Cai-qian Zhang, Yin-yin Wu
1Department of Epidemiology and Health Statistics, Zhejiang University School of Public Health, Hangzhou 310058, China.
Objective:
To evaluate and compare mail and meeting forms in evaluation of Delphi study.
Methods:
Delphi study by mail and meeting approaches was used to determine the health information dataset. Experts were required to grade the listed items through three indexes: importance, necessity and availability. Study duration, coefficient of variation of items, authority coefficient and coordination coefficient of the experts' opinion of two forms of study were calculated and compared.
Result:
The study duration was four months through mail form and 2 days through meeting. Compared with the first round, the coefficient of variation decreased (P<0.001, all of the three indexes by two forms), and the cooperation index increased (P<0.005) in the second round. The experts' opinions were easier to be consistent through meeting than through mail(P<0.033). And the authority coefficient by meeting consultation (0.83 ± 0.05) was higher than that by mail (0.77 ± 0.03) (P=0.001).
Conclusion:
Both mail and meeting forms of Delphi study can determine the health information dataset,but meeting consultation is better and requires shorter study duration.
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