Greineder 1999.

Methods	STUDY DESIGN: Parallel group randomised controlled trial LOCATION, NUMBER OF CENTRES: USA, Hospitals in New England DURATION OF STUDY: 24 months No blinding of outcome assessor
Participants	N SCREENED: Not reported N RANDOMISED: 57 (18 of which were identified from index hospitalisation: intervention: 9; control: 9) N COMPLETED: 18 M = 8 F = 10 MEAN AGE: 4 years BASELINE DETAILS: Not available for hospitalised participants INCLUSION CRITERIA: Hospitalisation within one year of study enrolment EXCLUSION CRITERIA: Not reported
Interventions	EDUCATION GROUP: Child and family received educational programme with advice on triggers, warning signs and maintenance medication in an initial session. Outreach follow up was by specialist nurse care over 12‐month period with educational and reinforcement components. Setting: Outpatient clinic CONTROL GROUP: Child and family had the same educational session as described above, but no contact from outreach nurse. TREATMENT PERIOD: 12 months FOLLOW‐UP PERIOD: 12 months
Outcomes	Hospitalisation; cost
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Adequate sequence generation?	Low risk	Paired randomisation sequence from random numbers table
Allocation concealment?	Unclear risk	Information not available
Incomplete outcome data addressed? All outcomes	Low risk	All participants completed