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Distribution of correlation coefficients when correlating hospital visits for asthma with air pollutants and meteorology for three age groups during (a) the 2007–2011 periods.

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posted on 2013-10-25, 09:34 authored by Kuo-Ying Wang, Tang-Tat Chau

(c) The same as in (a) but to control for warm days (temperature above ); and (e) to control for cold days (temperature below ). Significance of correlation are shown in (b), (d), and (f).