Smith 2004.

Methods	STUDY DESIGN: Parallel group randomised controlled trial LOCATION, NUMBER OF CENTRES: Urban ED in USA DURATION OF STUDY: 6 months Outcome assessors were blinded
Participants	N SCREENED: 702 N RANDOMISED: 543 (of which 527 enrolled) N COMPLETED: 302 M = 349 F = 178 MEAN AGE: 6.4 years BASELINE DETAILS: 92% African American; 92% Medicaid; INCLUSION CRITERIA: 2 to 12 years; Medicaid or no medical insurance EXCLUSION CRITERIA: Admission to hospital during index ED visit; chronic illness other than asthma; no working telephone in the home; participation in another asthma study; no primary care physician; parents unable to communicate effectively in English
Interventions	EDUCATION GROUP: 2 follow‐up phone calls and monetary incentive delivered by health educator. Call on day 2 (2‐day call) and the other on day 5 (5‐day call) post‐index ED visit. Coach reinforced importance of PCP follow up and discussed advantages of seeking follow‐up care with child's PCP. Strategies to overcome barriers to follow‐up care mentioned by the parents also discussed. Setting: Home CONTROL GROUP: Usual care TREATMENT PERIOD: 5 days FOLLOW‐UP PERIOD: 6 months
Outcomes	ED visit; scheduled attendance with primary care provider
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Adequate sequence generation?	Unclear risk	Information not available
Allocation concealment?	Low risk	Information not available
Incomplete outcome data addressed? All outcomes	Low risk	All participants analysed from audit checks