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Field
Last Published
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Before
June 07, 2018 01:16 PM
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After
October 17, 2021 11:09 AM
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Field
Planned Number of Clusters
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Before
One treatment with control on 129,949 clients
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After
One treatment with control on 3,054,438 customers (374,893 control)
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Field
Planned Number of Observations
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Before
The control group is 19,984 clients and the treatment group is 153,280 clients. Control group could be increased using existing observational data of other non-treated clients.
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After
The control group is 3,054,438 clients and the treatment group is 374,893 clients
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Field
Sample size (or number of clusters) by treatment arms
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Before
One treatment 173,264 clients in total, 153,280 treated. Control group could be increased using existing observational data of other non-treated clients.
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After
The control group is 3,054,438 clients and the treatment group is 374,893 clients
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Field
Power calculation: Minimum Detectable Effect Size for Main Outcomes
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Before
We consider the deviation from normalized monthly spending, savings, and balances, which have (upper bound) an across-clients standard deviation of 70%, then the sample size of 153,280 treated clients, will enable us to detect a 0.5 percent deviation, with 79.9% statistical power (rule-of-thumb value is 80%) and a 5% alpha error.
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After
We consider the deviation from normalized monthly spending, savings, and balances, which have (upper bound) an across-clients standard deviation of 70%, then a sample size of 150,000 treated clients, will enable us to detect a 0.5 percent deviation, with 79.9% statistical power (rule-of-thumb value is 80%) and a 5% alpha error.
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Field
Keyword(s)
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Before
Finance
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After
Finance
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Field
Building on Existing Work
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Before
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After
No
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