Monthly missing record distribution.

A total of 272 monthly entries are missing from 1584 possible records, accounting for 17.2% of missing data across all community health center (CSCOM) service areas in the district of Niono, Mali, during the investigational period (01/1996–06/2004). Percentage of missing monthly records after the exclusion of Fassoum, Nara, and Niono CSCOM service areas are listed in parenthesis. The annual percentage of missing monthly records is generally less than 2% per year. The only exception manifests in the practically reconstructed year of 1997 that was employed for program initialization. Consequently, artificial time-series periodicity introduction subsequent to the interpolation procedure is highly improbable.