Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Estimated mean nonzero counts and the associated 95% confidence bands for yearly symptom days, yearly symptom nights, and yearly days with limited activity versus age for children in the Detroit School dataset (left panels) and Pediatric Practice dataset (right panels).
