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Field
Randomization Method
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Before
Randomization is conducted at the individual level using a random number generator implemented in Microsoft Excel. Each participant who completed the study on day 4 is assigned a random number between 1 and 100. Participants with a number of 50 or below are assigned to Control, and those with a number above 50 are assigned to Rejection.
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After
Randomization is stratified by employment status. Within each employment-status group, participants who completed the study on day 4 are assigned a random number between 1 and 100. Participants with a number of 50 or below are assigned to Control, and those with a number above 50 are assigned to Rejection.
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