Sensitivity analysis: impact of simulation assumptions on the relative cost of semiannual/annual mass drug administration (MDA).

The values in the table are the ratio of total program costs, for semiannual MDA/annual MDA. This ratio shows which approach is less expensive (with values <1 indicating that semiannual MDA is less expensive and vice versa), and it provides an indication of the relative differences in cost. The ratio is based on the estimated cost per round (under our baseline assumptions, table 3) and the required number of treatment rounds, which are shown between brackets in this table (for semiannual/annual MDA). Results are shown for Indian and West African settings, with varying pre-control mf prevalence levels. Coverage of MDA was assumed to be 70% per round (percentage of total population). Given levels of mf prevalence are based on diagnosis with 60 µL blood smears.
n.a. estimate not available: conditions unfavorable for elimination.