Abstract
The authors respond: We appreciate Dr. Stang’s1 interest in our paper2 on the association of ischemic stroke with a decrease in temperature. As he pointed out, our tables show odds ratios based on the interquartile range of daily average temperature (17.4°C). We agree that it would have been more appropriate to express the odds ratios associated with a temperature change within a bound of daily variation (eg, 5°C). We have recalculated the odds ratios for 5°C temperature decrease; we present these results in Tables 1 and 2, which correspond to Tables 2 and 3 in the original paper.2TABLE 1: Association Between Decreased Temperature and Risk of Stroke by SeasonTABLE 2: Association Between Decreased Temperature and Risk of Stroke Onset by Risk FactorsWe made a mistake in the second paragraph of the “Results” section in stating that “confidence interval did not include 1.0 after 2 or more days after exposure.”2(p.474) It should be “confidence interval included 1.0 after 2 or more days after exposure.” We tried to comply with the policy of the journal Epidemiology3,4 by using the estimates of the odds ratios and their confidence intervals rather than statistical testing. It was not our intention to mislead readers. We trust that the additional tables will be useful. Yun-Chul Hong Department of Occupational and Environmental Medicine Inha University College of Medicine Incheon, Korea Jong-Ho Rha Department of Neurology Inha University College of Medicine Incheon, Korea Jong-tae Lee Eun-Hee Ha Department of Preventive Medicine Ewha Womans University college of Medicine Seoul, Korea Ho-Jang Kwon Department of Preventive Medicine Dankook University College of Medicine Cheonan, Korea Ho Kim Department of Epidemiology and Biostatistics School of Public Health Institute of Public Health and Environmental Sciences Seoul National University Seoul, Korea [email protected]
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