The prognosis for asthma is generally good, especially for children with mild disease. Mortality has decreased over the last few decades due to better recognition and improvement in care. In 2010 the death rate was 170 per million for males and 90 per million for females. Rates vary between countries by 100 fold. Globally it causes moderate or severe disability in 19.4 million people as of 2004 (16 million of which are in low and middle income countries). Of asthma diagnosed during childhood, half of cases will no longer carry the diagnosis after a decade. Airway remodeling is observed, but it is unknown whether these represent harmful or beneficial changes. Early treatment with corticosteroids seems to prevent or ameliorates a decline in lung function. Asthma in children also has negative effects on quality of life of their parents. File:Asthma world map-Deaths per million persons-WHO2012.Asthma deaths per million persons in 2012 File:Asthma world map - DALY - WHO2004.alt=A map of the world with Europe shaded yellow,Disability-adjusted life year for asthma per 100,000 inhabitants in 2004.
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