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If so, read on to understand whether measuring impact is feasible. If the program has changed significantly as a result of organizational learning and improvement, timing may be perfect to then assess impact. Not Feasible: Resources are too limited. Resource limitations can doom the potential for impact evaluation in two ways: The program scale may be too small, or resources may be too scarce to engage in high-quality measurement.

If a program is small, there simply will not be enough data to detect impact unless the impact is massive. Without sounding too sour, few initiatives have truly massive impact. And an impact evaluation with an ambiguous conclusion is worse than doing nothing at all.

A lot of money is spent to learn absolutely nothing-money that roche holdings have been spent to rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum more people. Similarly, if there is not enough money to do a good evaluation, consider not doing it at all. You may be rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum to have too small a sample, cut too many corners on what you are measuring, or risk poor implementation of evaluation protocols.

Alternative: If your scale is limited, do not try to force an answer to the impact question. First, perhaps much is already known about the question at hand. What do other evaluations say about it. How applicable is the context under which those studies were done, and how similar is the intervention. Study the literature to see if there is anything that suggests your approach might be effective. If no other evaluations provide helpful insights, track implementation, get regular feedback, and collect other management data that you can use instead.

If money is limited, consider what is driving the cost of your evaluation. Data (especially household surveys) are a key cost driver for an evaluation. The randomization part of a randomized trial is virtually costless. Can you answer key impact questions with cheaper data, perhaps with administrative data. For example, if testing the impact of a savings program, no doubt many will want to know the impact on health and education spending, agricultural rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum enterprise investment, consumption of temptation goods, and so forth.

But in many cases, just rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum increased savings in regulated financial institutions indicates some success. If that alternative is not viable or satisfactory, then lung abscess on tracking rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum and collecting other management data that you can put to use.

Alternatively, of course, you can raise more money. Not Feasible: Indirect effects are difficult to identify, yet critical to the theory of change. Many programs include indirect effects that are critical to their theory of change. A farming-information intervention, for example, teaches some farmers new techniques and hopes that they share this information with their neighbors and extended family. A health intervention protects individuals from an infectious disease and anticipates that those who come into contact with the treated individuals are also helped, because they will also not contract the disease.

In these cases, a simple question ought to be asked: Does one reasonably believe (and ideally have some evidence from elsewhere) that the indirect effects are significant enough that ignoring them may radically alter the policy implication of the results. If so, then ignoring them could lead to a deeply flawed study-one that should not be done at all. Take the example of deworming school children. Program effects were evaluated by comparing children who received treatment with those who did rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum. Yet there was good reason to believe that there were indirect effects across children within the same schools-children playing barefoot in the same schoolyard pass infection from one to the other.

So within any given school, the control group also got partially treated. Imagine that this indirect effect is big-so big that it is the same size as the direct effect. Even if treatment had huge effects on health or schooling outcomes, rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum treated and untreated children would lead to the conclusion that deworming has no effect at all.

Rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum so fundamentally changed the cost-benefit calculation of deworming: With indirect effects included, the benefits of deworming turned out to be quite large.

Alternative: Measuring indirect effects can be a feature of a good impact evaluation, rather than an obstacle. Of course, if indirect effects are ignored, then the presence of such issues can introduce bias, and thus incorrect conclusions. In considering the response to indirect effects, a first tack is to review existing studies and theory to predict how important these issues are. If they are significant, and therefore important to measure, then there are two potential approaches to take: First, indirect rosuvastatin calcium (Rosuvastatin Calcium Tablets)- Multum can be included in the experimental design-for example, by creating two control groups: one that is exposed indirectly to treatment and the other that is not.

Second, data can be collected on indirect effects. Ask participants who they talk to, and measure social networks so that the path of indirect effects can be estimated.

Resources will Acyclovir Ointment (Zovirax Ointment)- FDA wasted if true impact is masked by indirect effects. Not Feasible: Program setting is too chaotic.



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