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Fields Changed

Registration

Field Before After
Trial End Date March 31, 2023 March 31, 2024
Last Published July 20, 2022 07:56 AM March 15, 2023 09:32 PM
Intervention End Date March 31, 2023 March 31, 2024
Experimental Design (Public) Our randomization is conducted at the grade-by-school level. We randomly assign 114 grades at 38 schools intro treatment or control groups. Our randomization is conducted at the grade-by-school level. We randomly assign 114 grades at 38 public elementary schools intro treatment or control groups (in 2022FY) and 75 grades at 25 public elementary schools (in 2023 FY).
Planned Number of Clusters 114 grade 114 grades (in 2022 FY) and 75 grades (in 2023 FY)
Planned Number of Observations 6152 students 6,152 students (in FY2022) and 5,096 students (in FY2023)
Sample size (or number of clusters) by treatment arms 38 clusters with 2,050 students 38 clusters with 2,050 students (in FY2022) and 37 clusters with 2325 students (in FY2023)
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Irbs

Field Before After
IRB Name Keio University
IRB Approval Date March 15, 2023
IRB Approval Number 424
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