|
Field
Trial End Date
|
Before
October 02, 2020
|
After
October 22, 2021
|
|
Field
Last Published
|
Before
February 13, 2020 07:01 AM
|
After
March 17, 2021 06:12 AM
|
|
Field
Intervention End Date
|
Before
October 02, 2020
|
After
October 22, 2021
|
|
Field
Randomization Method
|
Before
Randomization done in office by a computer.
|
After
Randomization done in office by a computer.
Study 2 - for data to be collected in 2021 - block randomization in qualtrics
|
|
Field
Planned Number of Clusters
|
Before
Approximately 3600 students
|
After
Approximately 3900 students
|
|
Field
Planned Number of Observations
|
Before
Approximately 3600 students
|
After
Approximately 3900 students
|
|
Field
Sample size (or number of clusters) by treatment arms
|
Before
Study 1 (343): 103 baseline; 86 all-or-nothing; 154 self-select
Study 2 (406): 132 baseline; 131 all-or-nothing; 143 self-select
Study 3 (336): 103 baseline; 131 self-select (no encouragement); 102 self-select (with encouragement)
Study 4 (500): 114 baseline; 198 self-select (no bonus); 188 self-select (with bonus)
Study 5 (373): 114 baseline; 146 self-select (no encouragement); 113 self-select (with encouragement)
Study 6 (549): Phase 1 132 baseline; 417 self-select (encouragement)
Phase 2 (207): 207 self-select (encouragement)
2020 (planned)
Phase 1 (Introductory micro class): 130 baseline; 420 self-select (encouragement)
Phase 2(Introductory macro class): 420 self-select (encouragement)
|
After
Study 1 (343): 103 baseline; 86 all-or-nothing; 154 self-select
Study 2 (406): 132 baseline; 131 all-or-nothing; 143 self-select
Study 3 (336): 103 baseline; 131 self-select (no encouragement); 102 self-select (with encouragement)
Study 4 (500): 114 baseline; 198 self-select (no bonus); 188 self-select (with bonus)
Study 5 (373): 114 baseline; 146 self-select (no encouragement); 113 self-select (with encouragement)
Study 6 (549): Phase 1 132 baseline; 417 self-select (encouragement)
Phase 2 (207): 207 self-select (encouragement)
2021 (planned)
Repeat Study 5 - 100 baseline; 150 self-select (no encouragement); 150 self-select (with encouragement)
Repeat Study 6
Phase 1 (Introductory micro class): 240 baseline; 160 self-select (encouragement)
Phase 2(Introductory macro class): 300 self-select (encouragement)
|