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Additional detail on data collection of wave 1 data is described by Qureshi et al [13].
All participants provided electronic consent at the beginning of the survey. Those who completed general health and back pain surveys at wave 1 were offered US $3.50 for their participation. Participants were offered an additional US $5 per subsequent completed survey (wave 2 and wave 3). All baseline participants (even those who did not participate in wave 2) were asked to participate in wave 3.
Interact J Med Res 2024;13:e58771
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This study extends the work of Qureshi et al [5], by examining improvements in data quality and effects on mean estimates of health status by excluding respondents who endorse either or both of 2 fake health conditions (“Syndomitis” and “Chekalism”).
We developed web-based surveys and used the web-based platform Cloud Research (formerly Turk Prime) to field the survey in 2021 with MTurk participants [11].
J Med Internet Res 2023;25:e46421
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