Fig. 2.

Estimated share of unmet need in 2015 by country Calculated using

a approach 1 and b approach 2. Approach 1 calculates unmet need for appendicitis assuming that the proportion of this unmet need is equivalent to the unment need for all conditions requiring surgery. Approach 2 calculates unmet need as the relative difference of estimated number of appendicectomies (calculated as World Bank income group-specific share of surgical volume) to the number of appendicitis cases.