In this age of ‘lean data’, organizations are seeking ways to reduce the data collection burden and cost in order to get meaningful, actionable data about their clients. Practitioners value the PPI for its statistical rigor, relatively low implementation cost, simplicity and transparency… the PPI is ‘lean data’. The national surveys upon which the PPI is based are conducted by enumerators in respondents’ homes, so the PPI is most accurate when it replicates that and the survey is done in-person and at-home. However, it can become expensive and time-consuming to administer the PPI if regular visits to a client’s home are not already built into an organization’s business model.
Given the trend to explore leaner ways to collect impact data, including PPI data, we wanted to test alternative interview methods that could potentially be less expensive, faster, and make it easier for organizations to administer the PPI. With funding from the Ford Foundation, Grameen Foundation worked with Mark Schreiner, developer of the PPI, to test the accuracy of alternative methods...
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