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Field
Planned Number of Observations
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Before
12,000 mobile phone subscribers.
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After
Our targeted sample is 12,000 mobile phone subscribers. We plan to send the intervention to 17,209 nationally representative sample. If we do not reach this target, we will supplement our sample with an additional booster sample of 8,564 respondents. However, the booster sample may not be as representative of the national population as our initial sample of 17,209 nationally representative respondents.
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Field
Sample size (or number of clusters) by treatment arms
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Before
The unity of analysis is individuals’ phone subscribers from IPSOS database. As research budget allow for 12,000 sample size, which is powered for our purpose. We set the sample sizes as to 4,500; 4,500; and 3,000 for T1; T2; and Placebo, respectively
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After
Our analysis unit is individual phone subscribers from the IPSOS database, with a target sample size of 12,000 for our study which is distributed as 4,500; 4,500; and 3,000 for T1; T2; and Placebo, respectively. To achieve this sample size, we plan to recruit 17,209 respondents, who will be nationally representative and distributed in the same ratio as our target sample. Specifically, we aim to recruit 6,454, 6,453, and 4,302 respondents for T1, T2, and Placebo, respectively.
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