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Figure 2 | Environmental Health

Figure 2

From: A comparison of temporal trends in United States autism prevalence to trends in suspected environmental factors

Figure 2

Temporal trends in CDDS autistic disorder (blue) and California IDEA autism data (red). For both CDDS and IDEA, age-resolved snapshots for 2002 (squares) and constant-age tracking data for 5 year-olds (triangles) are shown. Trends slopes (symbol b, in units of autism count per 104 per year) are approximated using least squares linear regression over birth year intervals 1988–1995 (for 2002 snapshots) and 1995–2001 (for 5 year-old tracking).

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