|
Field
Trial Start Date
|
Before
February 23, 2025
|
After
May 18, 2025
|
|
Field
Trial End Date
|
Before
April 13, 2025
|
After
July 06, 2025
|
|
Field
Last Published
|
Before
January 17, 2025 07:10 AM
|
After
May 10, 2025 12:21 AM
|
|
Field
Intervention Start Date
|
Before
March 02, 2025
|
After
May 25, 2025
|
|
Field
Intervention End Date
|
Before
March 16, 2025
|
After
June 01, 2025
|
|
Field
Planned Number of Observations
|
Before
600 Douyin users
|
After
1200 Douyin users
|
|
Field
Sample size (or number of clusters) by treatment arms
|
Before
200 users control, 200 users receive treatment 1, 200 users receive treatment 2
|
After
400 users control, 400 users receive treatment 1, 400 users receive treatment 2
|
|
Field
Power calculation: Minimum Detectable Effect Size for Main Outcomes
|
Before
|
After
As for the status dummy for turning off personalized recommendation algorithm in Douyin, the SD is estimated to be about 0.5, with each group containing 400 observations, and the MDE with power being 0.8 and alpha being 0.05 would be 0.099
|
|
Field
Additional Keyword(s)
|
Before
|
After
Digital platform, Information
|