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Field
Primary Outcomes (Explanation)
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Before
The main study outcome is uptake of potable water from SHRI. This outcome will be measured in one of two ways. The first is the percentage of households purchasing water in each of the study weeks during the intervention and follow-up periods. For our primary research question, we will report this measure for week 7 of the follow-up period, capturing the net impact of subsidies on uptake of water deliveries over the full program period. This requires that all households are visited in week 7 and offered water delivery sales. We can also capture this measure in weeks 5 and 6 of the follow-up period to see if uptake changes over time after the price shock for our primary research question.
Our second measure of uptake is captured during our endline survey during the 5th week of deliveries (the week following the subsidy period). During the interview, subjects are asked whether they intend to purchase water delivery or not at 10/INR per bottle. This is measured using variable FS1a (for those who did not purchase during the intervention period) and FS1c (for those who did purchase during the intervention period) of the endline survey (see Appendix 2 for endline survey questions). While this is a reliable measure because it is taken directly from survey enumerators, it presupposes that respondents will purchase water without direct observation of purchase. This could present measurement error since some families may report wanting to purchase water yet change their minds after the interview, and vice-a-versa. This occurred with several households during out pilot study, leading us to place a higher preference on the first triangulated measure of uptake.
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After
The main study outcome is uptake of potable water from SHRI. This outcome will be measured in one of two ways. The first is the percentage of households purchasing water in each of the study weeks during the intervention and follow-up periods. For our primary research question, we will report this measure for week 7 of the follow-up period, capturing the net impact of subsidies on uptake of water deliveries over the full program period. This requires that all households are visited in week 7 and offered water delivery sales. We can also capture this measure in weeks 5 and 6 of the follow-up period to see if uptake changes over time after the price shock for our primary research question.
Our second measure of uptake is captured during our endline survey during the 5th week of deliveries (the week following the subsidy period). During the interview, subjects are asked whether they intend to purchase water delivery or not at 10/INR per bottle. This is measured using variable FS1 of the endline survey (see attached endline survey questions). While this is a reliable measure because it is taken directly from survey enumerators, it presupposes that respondents will purchase water without direct observation of purchase. This could present measurement error since some families may report wanting to purchase water yet change their minds after the interview, and vice-a-versa. This occurred with several households during out pilot study, leading us to place a higher preference on the first triangulated measure of uptake.
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