Patterns, factors associated and morbidity burden of asthma in India.

PLoS One · 2017 · PMC5657621 · PMID 29073132

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an increasing trendno p-value reported

Discussion The present study uses IHDS-2, a nationwide cross-sectional survey data and observed an increasing trend in the prevalence rate of reporting asthma between 2005 and 2012.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.