Table C1.

Eliciting expert opinion to evaluate the differences in the outcomes between missing and reported outcomes. Experts are asked to distribute a total of 100 across the nine categories. This table shows the responses of an expert who believes that there are no big differences between missing and reported outcomes, and an expert who believes that missing participants had worse outcomes than those reported

The mean score in the HAMD scale of those who were randomized to reboxetine and completed the final questionnaire is 20 with standard deviation 6
(so that about 95% of these participants have values between 10 and 30). What is your expectation for the mean outcome score for those who do not
completed the final questionnaire, compared with those who completed it?
First expert	Interval of mean change for the noncompleters
	Worse than reported outcomes by				Same as reported outcomes	Better than reported outcomes by
	−12	−9	−6	−3		3	6	9	12
	around 8	around 11	around 14	around 17	around 20	around 23	around 26	around 29	around 32
Your answers	5	8	12	15	20	15	12	8	5
Second expert	Interval of mean change for the noncompleters
Worse than reported outcomes by				Same as reported outcomes	Better than reported outcomes by
	−12	−9	−6	−3		3	6	9	12
	around 8	around 11	around 14	around 17	around 20	around 23	around 26	around 29	around 32
Your answers	5	10	35	35	10	5	0	0	0

Abbreviations: HAMD, Hamilton Rating Scale for Depression.