IAPP is comprised of two evaluation designs (i) technology adoption evaluation, and (ii) demonstration plot evaluation. Six districts (Kurigram, Nilfamari, Lalmonirhat, Patuakhali, Barguna, and Jhalokati) are only part of the technology adoption evaluation. In these six districts, eight unions were selected for the impact evaluation surveys. Within each union, two villages were surveyed. Each of these villages is eligible for all four components of the IAPP (crops, fisheries, livestock, and water management interventions). In each union, one of the sampled villages received IAPP interventions in 2012 and the other did not receive interventions until 2014.
Prior to the baseline survey, a full census of the sampled villages in these six districts was conducted to identify households eligible for and likely to participate in IAPP. IAPP interventions are based at the level of the farmer group, but at the time of the baseline survey, farmer groups were not yet formed. For that reason, census data was used to construct a sampling frame of likely participants in IAPP crop and fisheries groups. In each village, 16 households were sampled, half of which were selected as eligible for the crops groups and half for the fisheries groups. Eligibility was determined by IAPP targeting criteria, prioritizing crop farmers with marginal or small landholdings, and fishermen with access to ponds between 15-50 decimals. After sampling, the IAPP teams reached out to sampled farmers and attempted to involve them in IAPP groups. However, very few sampled farmers ended up joining livestock groups.
Two districts (Rangpur and Barisal) are included in both the technology adoption evaluation and the demonstration plots evaluation, and as such the sampling strategy in these districts was slightly different. Significantly more villages had to be sampled in these districts because of the DPE tests variations in project implementation. In all, 110 villages were sampled in each district.
The sample in the six districts in the technology adoption evaluation, the sample is representative of farmers who were eligible for participation in IAPP and were invited to join. The sample in the two additional technology adoption districts is representative of farmers who were eligible for participation in IAPP and were part of the initial IAPP group formation.
To read about sampling strategy in baseline survey, please refer to the document: iapp_baseline_report_final_with_appendices.pdf provided under the Related Materials tab.
