A latent growth modeling analysis of social norms and tobacco use among adult smokers in Mainland China [Second Pre-Registration]

Abstract

This is the second and final pre-registration for this project. The first pre-registration is publicly available here: https://doi.org/10.17605/OSF.IO/9GHU3. It described the initial hypotheses and description for generating descriptive statistics, frequencies, and psychometrics for the dataset prior to receiving and accessing it from the data vendor. This pre-registration explains the final hypotheses and main analysis plan now that the data has been received, and descriptives/psychometrics have been completed. The main analyses in this pre-registration relate to the final hypotheses, and have not yet been run. The final hypotheses differ from the initial hypotheses listed in the first pre-registration in terms of wording, as they have been simplified. Hypothesis #4 in the first pre-analysis plan was subsumed under the more broad non-directional growth hypotheses evident in this pre-analysis plan. This was mainly done to simplify the hypotheses whose wording was judged to be confusing