Title: Bridge or Substitute? Generative AI, Self-Diagnosis and Health Equity among Nigerian University Students

The survey was completed by 196 respondents, of whom 191 gave consent and are retained in the analytical sample; 146 reported having used GenAI for health purposes. Data collection covered demographic and screening information, usage narratives, access and equity barriers, trust and verification practices, and future expectations regarding AI in healthcare, gathered through closed and open ended questions.

Directly identifying information, including names and contact details, has been removed; contact details volunteered for optional follow up interviews were separated from responses prior to anonymisation. The dataset includes the cleaned survey responses, first pass content analysis codes, and the survey instrument, and supports the findings reported in "Bridge or Substitute? Generative AI, Self-Diagnosis and Health Equity among Nigerian University Students.