Research Question:
Does assignment to any physician-delivered COVID-19 video increase information-seeking behavior among Black or Latinx adults in the United States?

Hypothesis:
H0: Assignment to any physician-delivered COVID-19 video does not increase information-seeking behavior relative to pure control
H1: Assignment to any physician-delivered COVID-19 video increases information-seeking behavior relative to pure control

STUDY DESIGN:
- Type: Randomized controlled trial
- Unit of observation: Individual adult respondent
- Sample: Black or Latinx adults in the United States surveyed in May 2020
- Comparison: Any video treatment versus pure control
- Study structure: Single post-treatment survey with randomization within demographic strata

VARIABLE GLOSSARY:
- intended_behavior: Count of information links demanded (integer, 0-10) [OUTCOME]
- anytreat: Assignment to any video treatment versus pure control (binary: 0/1) [TREATMENT]
- stratum: Randomization stratum based on race, gender, and age (categorical)
- resp_lang: Survey language (categorical)
- resp_race: Respondent race (categorical)