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Comment
. 2011 Jan;8(1):A26; author reply A27.
Epub 2010 Dec 15.

Regression model fitting with quadratic term leads to different conclusion in economic analysis of Washington state smoking ban

Marshal Ma, Scott McClintock
Comment

Regression model fitting with quadratic term leads to different conclusion in economic analysis of Washington state smoking ban

Marshal Ma et al. Prev Chronic Dis. 2011 Jan.
No abstract available

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Figures

Bar graph
Figure 1
Comparison of regression fit to taxable retail sales in bars and taverns in Washington State after the implementation of a smoke-free law, from the first quarter of 2002 (1/02) through the fourth quarter of 2007 (4/07). Values are adjusted for inflation to the Consumer Price Index (www.bls.gov/cpi/). The figure displays 2 regression equations for the quadratic fitting (y = 0.1405x2 − 2.4969x + 103.58, R2 = 0.7811) and the linear fitting (y = 0.8166x + 88.359, R2 = 0.367) .
See this image and copyright information in PMC

Comment on

References

    1. Boles M, Dilley J, Maher JE, Boysun MJ, Reid T. [Accessed October 4, 2010];Smoke-free law associated with higher-than-expected taxable retail sales for bars and taverns in Washington State. Prev Chronic Dis. 2010 7(4):A79. http://www.cdc.gov/pcd/issues/2010/jul/09_0187.htm . - PMC - PubMed