Ferrari 2000 Form 12.

Methods	Study design: Randomized, double blind, cross over Study location: Italy Wash‐out: ≧2 days Exercise challenge: Cycle‐ergometer for 7 min at 85% of max HR Criteria for EIB diagnosis: FEV1 fall >15% after exercise challenge
Participants	Number of subjects: 14 % of males: 92% Age range: 12‐28 years Ethnicity: Not reported Withdrawal or drop out: 0
Interventions	Drug administration: Single dose Time of exercise challenge after drug administration: 15 min, 4 hours Intervention: Formoterol 12 mcg Control: Placebo Other drug arms: None Concomitant inhaled corticosteroid (ICS) treatment: Allowed
Outcomes	Primary available: Max FEV1 % fall; % protection; Secondary available: Side effects; Number of patients with a max FEV1 % fall <10%
Notes	Industry funded study
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Insufficient information
Allocation concealment (selection bias)	Unclear risk	Insufficient information
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Double blind study
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Insufficient information
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Insufficient information
Selective reporting (reporting bias)	High risk	Statistical analysis and manuscript writing made by drug industry staff
Other bias	Unclear risk	Insufficient information