González‐Martin 2003.

Methods	Randomised trial
Participants	21 patients with asthma (intervention 11; control 10) Professional (delivering intervention): not clear Practice: 1 Outpatient paediatric clinic affiliated with Catholic University Chile Year of study: Not stated.
Interventions	Pharmacist educated patients on medication therapy and inhaler use using asthma explanatory booklet and prescribed medications brochure, vs usual care. Length of the intervention: 30 minutes Number of interventions: 3 during 9 weeks
Outcomes	Paediatric asthma quality of life questionnaire (PAQLQ) score: emotions, activities, symptoms domains Spirometry testing: Forced Vital Capacity (FVC), Forced Expiratory Volume (FEV1)
Notes	Funding source: Not specified Conflict of interest: Not stated
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "the child was assigned at random to one of the two groups of the study"
Allocation concealment (selection bias)	Unclear risk	Allocation procedure not described
Blinding of participants and personnel (performance bias) All Outcomes/Outcome 1	Unclear risk	Same unblinded personnel administered both intervention and control arms
Blinding of outcome assessment (detection bias) All Outcomes/Outcome 1	Unclear risk	Assessors were not blinded.
Incomplete outcome data (attrition bias) All outcomes	Low risk	All participants completed the trial.
Selective reporting (reporting bias)	Low risk	Few outcomes, all reported
Other bias	Low risk	None