Evaluation Includes:


(i) Process evaluation

(ii) and Efficacy evaluation


Process evaluation:

Process evaluation has several components and depending upon the aspects to be covered and after deciding the method of data collection, appropriate sampling design has to be formulated.


Indices for Operational Evaluation:

Process evaluation can be carried out using some indicators and comparisons can be made between PHCs or between urban and rural or between districts. The following are the indicators that can be used for this purpose:

  • Coverage of distribution and

  • Consumption


Efficacy evaluation:Efficacy evaluation is based on the parasitological surveys in human population before and after the intervention covering certain proportion of population in selected villages/wards.


Indices for Impact Evaluation:

Impact assessment is most critical. The current understanding and knowledge of filariasis suggest that overall impact of filariasis control by single annual dosage of DEC cannot be observed in a short period of time. The planning of impact assessment therefore requires understanding of possible impacts in short and long terms. The expected outcomes of the programme are:

  • Reduction in microfilaria density in treated population, and

  • Consequent reduction in transmission

  • Reduction in infection prevalence (relatively slower than 1)

  • Reduction in appearance of new cases of infection

  • Reduction in appearance of new cases with filarial disease (slowest)


Last Updated on:06/05/2014