Analysis plan for a secondary data analysis

Analysis plan (version 1.0, 3 November 2026) for a secondary analysis of the 2023 Seoul Jjokbang Resident Survey (N = 1,669), a survey of residents of single-room dwellings (jjokbang) in Seoul, Korea. The study applies an aspiration–capability framework to public rental housing. It has four aims: (1) to identify who has ever applied for government rental housing among residents who would choose it if they could move (primary; n = 829); (2) to describe the reasons for non-application; (3) to examine whether stated preference to stay partly reflects resignation (exploratory; no health outcomes); and (4) to compare depressive symptoms and suicidal ideation across aspiration and application groups (exploratory; cross-sectional, so reverse causation cannot be excluded). This plan was deposited before group differences in health outcomes were analysed and before the primary model was fitted with the final covariate set. The two primary hypotheses are not independent of the data, because an earlier feasibility model had already examined application among aspirants (non-recipient OR 0.62; history of homelessness OR 1.36). The plan discloses this and everything else seen before deposit. The analysis is therefore pre-specified but not fully blind, and an independent test would require later survey waves. The plan contains no survey data. The data were collected by the Seoul Metropolitan Government and are not publicly available.