From: A study of target effect sizes in randomised controlled trials published in the Health Technology Assessment journal
DELTA elicitation method
Frequency
%
Anchor
0
Distribution
2
1.9
Health economics
1
0.9
Opinion-seeking
10
9.3
Pilot
4
3.7
Review of evidence
49
45.8
Standard effect size (SES)
5
4.7
Mixeda
7
6.5
No mention
21
19.6
Other
8
7.5