title: A randomized controlled trial of asthma self-management support comparing clinic-based nurses and in-home community health workers: the Seattle-King County Healthy Homes II Project.
abstract: OBJECTIVE
  To compare the marginal benefit of in-home asthma self-management support provided by community health workers (CHWs) with standard asthma education from clinic-based nurses.
  
  
  METHODS
  Randomized controlled trial.
  
  
  METHODS
  Community and public health clinics and homes.
  
  
  METHODS
  Three hundred nine children aged 3 to 13 years with asthma living in low-income households.
  
  
  METHODS
  All participants received nurse-provided asthma education and referrals to community resources. Some participants also received CHW-provided home environmental assessments, asthma education, social support, and asthma-control resources.
  
  
  METHODS
  Asthma symptom-free days, Pediatric Asthma Caretaker Quality of Life Scale score, and use of urgent health services.
  
  
  RESULTS
  Both groups showed significant increases in caretaker quality of life (nurse-only group: 0.4 points; 95% confidence interval [CI], 0.3-0.6; nurse + CHW group: 0.6 points; 95% CI, 0.4-0.8) and number of symptom-free days (nurse only: 1.3 days; 95% CI, 0.5-2.1; nurse + CHW: 1.9 days; 95% CI, 1.1-2.8), and absolute decreases in the proportion of children who used urgent health services in the prior 3 months (nurse only: 17.6%; 95% CI, 8.1%-27.2%; nurse + CHW: 23.1%; 95% CI, 13.6%-32.6%). Quality of life improved by 0.22 more points in the nurse + CHW group (95% CI, 0.00-0.44; P = .049). The number of symptom-free days increased by 0.94 days per 2 weeks (95% CI, 0.02-1.86; P = .046), or 24.4 days per year, in the nurse + CHW group. While use of urgent health services decreased more in the nurse + CHW group, the difference between groups was not significant.
  
  
  CONCLUSIONS
  The addition of CHW home visits to clinic-based asthma education yielded a clinically important increase in symptom-free days and a modest improvement in caretaker quality of life.
authors.affiliation: University of Washington School of Medicine and School of Public Health and Community Medicine, Seattle, WA 98104, USA. james.krieger@kingcounty.gov
authors.forename: James
authors.initials: J
authors.lastname: Krieger
authors.forename: Tim K
authors.initials: TK
authors.lastname: Takaro
authors.forename: Lin
authors.initials: L
authors.lastname: Song
authors.forename: Nancy
authors.initials: N
authors.lastname: Beaudet
authors.forename: Kristine
authors.initials: K
authors.lastname: Edwards
mesh_terms: D001249:Asthma / Q000628:therapy*; D017028:Caregivers; D002648:Child; D003151:Community Health Centers; D003152:Community Health Nursing; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D010353:Patient Education as Topic; D011203:Poverty; D011788:Quality of Life; D012648:Self Care