Morel 1984.

Methods	Randomised but not blind Disease control = number new blisters between days 21 to 51 Follow‐up: 51 days ( = treatment period)
Participants	50 participants with BP confirmed by IF studies.
Interventions	A: 24/26 prednisolone 0.75 mg/kg/day. B: 22/24 prednisolone 1.25 mg/kg/day.
Outcomes	New blister formation: at day 21 and 51
Notes	2 dropouts in each group, no reasons given, and not included in analysis Erythromycin used for infection but its anti‐inflammatory effect not evaluated or commented upon
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Quote: "using a single table of pre‐established and balanced randomisation for all 8 patients." (Translation, page 926).
Allocation concealment (selection bias)	Unclear risk	No details given.
Blinding (performance bias and detection bias) All outcomes	High risk	No. No details given.
Incomplete outcome data (attrition bias) All outcomes	High risk	2 dropouts in each group, no reasons given, and not included in analysis.
Selective reporting (reporting bias)	Low risk	New blister formation at days 21 and 51 reported.
Other bias	Unclear risk	Some participants that could have been recruited were excluded on the grounds that they were able to take part in a parallel study involving plasma exchanges.