Gromert 2009.

Methods	Twelve‐month parallel‐group double‐blind placebo‐controlled randomised trial
Participants	Fifty children from 3 months to 4 years of age with moderate atopic dermatitis. No additional information provided on randomised numbers of participants in each arm
Interventions	Probiotic:Lactobacillus reuteri at a dose of 1 × 10⁸ CFUs/d taken orally suspended in 5 drops of food oil for 12 months Placebo: not specified but also given for 12 months
Outcomes	• SCORAD* • Subjective symptoms of atopic dermatitis: itching and loss of sleep* • Use of steroid treatment* *Denotes outcomes prespecified for this review
Notes	All available information taken from a conference abstract. No publication found, and study authors could not be contacted
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "In this prospective, double blind, randomised study..." Inadequate information: information on this study taken only from a conference abstract
Allocation concealment (selection bias)	Unclear risk	Inadequate information: information on this study taken only from a conference abstract
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Quote: "In this prospective, double blind, randomised study..." Inadequate information: information on this study taken only from a conference abstract
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Quote: "In this prospective, double blind, randomised study..." Inadequate information: information on this study taken only from a conference abstract
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Inadequate information: information on this study taken only from a conference abstract
Selective reporting (reporting bias)	Unclear risk	Inadequate information: information on this study taken only from a conference abstract
Other bias	Unclear risk	Inadequate information: information on this study taken only from a conference abstract