The analysis of cost should be based on units of measure that are the most relevant. Where the goal is the reduction of malaria, the unit of measure for cost analysis should be a good proxy for this goal, or a logical step towards this goal. In the case of ULV spraying, cost per acre is a useful metric because it relates to performance in an understandable technical way ... while cost per capita is an indicator of cost and possible cost effectiveness of impact on the population.

TVM uses indexes as a way to simplify the recording of change ... but mainly at the detail level. Progress requires change, and change can be reported using an index as a measure.

TVM identifies key indicators of progress in a community, but does not generally combine these indicators to form an aggregate index with the exception of the TVM progress indicator. This indicator is a measure of the change in profile of the community over a period of time.

Costs vary depending on the circumstances. Good program design minimizes costs and maximized cost effectiveness. This is a central focus of the IMMC strategy.

Cost effectiveness is most easily optimized when there is good information about costs, without this information planning is merely a guessing game.

In the IMMC cost effectiveness model, the strategy has a focus on achieving low cost so that there can be permanent sustainability. Accordingly there is a need to understand how costs behave under varying conditions.

The analysis of costs should be based on the units of measure that are the most relevant. Where the goal is the reduction in the burden of malaria. The unit of measure should be a good proxy for this goal, or a logical step towards that goal.

In the case of ULV spraying, cost per acre treated is a useful metric because it relates to performance in a useful technical way ... while cost per capita is an indicator of cost and cost effectiveness impact on the population. .