The asthma predictive index remains a useful tool to predict asthma in young children with recurrent wheeze in clinical practice

[...]Dr Brand used a hypothetical example in which "the prevalence of asthma is 40% instead of the 20% value in the Tucson study" and showed a reduction in negative predicted value from 90% to 59% and an increase in positive predictive value up to 83%.1 However, contrary to what was stated, we think that in settings with a higher prevalence of asthma, the positive predicted value is more useful than the negative predicted value to select patients in whom to establish early asthma management.