Policy ForumSCIENCE AND REGULATION

Particulate Matter Matters

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Science  18 Apr 2014:
Vol. 344, Issue 6181, pp. 257-259
DOI: 10.1126/science.1247348

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  1. Beijing shrouded in smog. CREDIT: ISTOCKPHOTO
  2. TSPs and mortality rate.

    The association between TSPs and mortality rates can vary widely within a year across models and within a model across years. Cross-sectional parameter estimates of the effect of a 1 µg/m3 increase in TSPs on mortality rates, heteroskedastic-consistent standard errors (in parentheses), and R-squared statistics (in brackets) associated with a separate regression of the mortality rate of adults over age 50 on TSPs. Adjustments for confounds include controls for age distribution, gender, race, income, employment, income assistance, and medical expenditures. *P < 0.1, **P < 0.05, ***P < 0.01. Modified from (14).

  3. CREDIT: ISTOCKPHOTO