Population-based assessment of asthma symptom burden in children.

The Minneapolis and St. Paul Controlling Asthma in American Cities Project (CAACP) used a school-based symptom survey to inform community-based programming and provide an intermediate outcome measure of progress toward reducing the burden of asthma. In collaboration with the two school districts, the project mailed the Child Asthma Short Form, a validated health-related quality of life instrument to parents of children in grades K-8 every other school year from 2003 to 2007. The survey was mailed to a randomly selected sample in four languages (English, Spanish, Hmong, and Somali). The overall response rate was 47%, 41%, and 32% for years 1, 3, and 5, respectively. Two out of three children for whom surveys were completed were children of minority populations; more than 50% were eligible for free or reduced-price meals. The changes in scores from the first round (2003-2004) to the third round (2007-2008) were statistically significant for daytime symptom burden (p < 0.05). Improvements were noted, but not statistically significant, for nighttime symptoms and functional limitations. Children of some racial/ethnic minority groups and children eligible for free or reduced-price meals had the highest symptom burden. Findings were used to guide CAACP's program development and delivery to populations in greatest need. CAACP's experience in Minneapolis and St. Paul demonstrates the feasibility of administering a symptom burden survey at low cost and in compliance with school system and institutional review board requirements to maintain confidentiality. The symptom-based survey may be a useful tool to track trends and changes in health disparities at a community and population level.