Japan Severe Asthma Index

Despite the existence of comprehensive severe asthma guidelines and a severe asthma registry, Japan’s score in Policy Context is well below the average due to the lack of a national asthma strategy and limited alignment of national care guidelines with international guidelines. Importantly, Japan ranks last in terms of Access and Care Coverage. This can be attributed to limited access to treatment and medicines (including biologics), diagnostics, and digital therapeutics. In spite of this, Japan has the highest score in Disease Burden, with relatively low scores across most indicators except the percentage of deaths attributable to asthma, where Japan ranks slightly below average and is driven primarily by the lowest rate of adult obesity among the selected countries.