Context: Mixed methods research (MMR) integrates qualitative data and quantitative data in a study to achieve greater understanding of a research topic than could be obtained from one type of data alone. While the field of contraception has been traditionally driven by quantitative investigations in drug/device development and clinical trials, there has seen a recent surge in qualitative, social science, and behavioral research. The extent to which MMR has been applied to the field of contraception is unknown, and the quality of MMR reporting in contraception research has not been formally evaluated. Objectives: 1) To describe the prevalence and trends in qualitative, quantitative, and MMR in contraceptive research; 2) To assess the reporting quality of MMR studies in contraception. Dataset: The dataset will initially include all publications from 2010-2020 in five top-ranked journals that publish contraceptive research. These five journals were identified based upon a review of impact scores and a survey of internationally recognized experts in contraception research. We will identity potential papers for inclusion using comprehensive search terms for “contraception” and “mixed methods.” Inclusion Criteria: Articles must report findings of empirical studies in contraception research (including pharmacokinetic studies , biochemical studies, drug/device trials, clinical trials, epidemiological analyses, behavioral and social science research, clinical or practice-based research). Study Design, Analysis. and Outcomes: Two independent reviewers (MT, JW) will screen titles and abstracts and categorize papers as qualitative, quantitative, or MMR. A second round of screening with full-article review will occur as necessary. We will conduct a prevalence study as described by Molina-Azorin and Fetters to report the percentage of qualitative, quantitative, and MMR publications in contraception. Using the Good Reporting of a Mixed Methods Study (GRAMMS) criteria by O’Cathain, we will assess the quality of reporting in all identified MMR publications in contraception. Expected Outcomes: We hypothesize that less than 3% of contraception publications will be MMR and that the majority of these publications will have occurred in the last five years. We also anticipate inconsistent and poor quality of MMR reporting, and will provide recommendations for improving the rigor of future MMR in contraception.