OPEN006: Cross-survey comparability of sleep-duration associations with PHQ-2 positivity — reproducibility materials

Abstract

Analysis scripts and aggregate outputs accompanying the manuscript Cross-Survey Comparability of Sleep-Duration Associations With PHQ-2 Positivity in NHIS 2022 and NHANES 2021–2023. Version v6-code-20260916 adds a result-informed description of observed PHQ-2 positivity in five groups defined by original and half-up category boundaries, using full-frame Taylor ratio variance and pointwise logit–t intervals. Independent Python–R verification passed 93/93 checks without warnings; an isolated replay also matched 126 frozen fields and reproduced S20B byte for byte. No new outcome regressions or groupwise significance tests were added. These proportions are not standardized predictions or a decomposition of adjusted association changes. The package contains 24 logical tables in 25 CSV files (S20 panels A and B), two figures, dated plans, checksums, official download links, scripts and aggregate verification reports. No individual-level records are included. Obtain the official files separately from CDC/NCHS. Earlier model code, numerical outputs and figures are retained. Original model replays passed 1079/1079 and 930/930 checks on 14 September 2026 and were not repeated for this descriptive amendment. Computational agreement does not establish model validity, interval coverage or measurement equivalence. Result-informed amendments are not prospective preregistration. Manuscript-drafting and internal-review tools are excluded. Original software, including embedded comments, is licensed under MIT. Original standalone documentation, metadata, aggregate tables, figures and reports are licensed under CC BY 4.0. These licenses apply to different materials, not as alternative licenses for all files. See license.txt and LICENSES. CDC/NCHS source data and third-party dependencies retain their respective terms. Creators in manuscript order: Qingling Zhao; Xinyu Guo. Both: School of Psychology, Shandong Second Medical University, Weifang, Shandong, China. Funding: Natural Science Foundation of Shandong Province (ZR2024QC379 and ZR2025QC173); Shandong Provincial Social Science Planning Research Project (24DYYJ03 to Xinyu Guo). Funders provided financial support only.