Effect of patient completed agenda forms and doctors' education about the agenda on the outcome of consultations: randomised controlled trial

This interesting paper includes a confusing table! Line 1 of the
table suggests that the mean duration of consultation for the intervention
group was actually 6.2 minutes (mean of reference group - mean of
intervention group=0.9), thus being at variance with the interpretation
provided. Could this be clarified. If the intervention resulted in a
reduced mean consultation length, considerable caution should be applied
before adopting the approach outlined.

Competing interests:
None declared