Data Management Plan for "Developing a patient-reported measure of pain in early medical abortion: Patient-facing measure evaluation and psychometric validation"

This project phase follows conceptual development and expert content review (separate DMPs submitted for each).</p><ul><li>Stage 1 will involve approximately 24-30 cognitive interviews to assess comprehension, relevance, acceptability and response processes and iteratively refine the draft measure. </li><li>Stage 2 will administer the refined measure to an independent sample of approximately 300 participants for item analysis, item reduction and exploratory factor analysis. </li><li>Stage 3 will administer the shortened measure and selected validation measures to a separate independent sample of approximately 300 participants for confirmatory factor analysis and assessment of reliability and construct validity. </li><li>Participants will take part in one stage only.</li><li>Participants will be female adults (16 years and older) who have completed an EMA through British Pregnancy Advisory Service (BPAS) within the preceding six weeks. </li><li>Recruitment and participation will be remote, using Jisc Online Surveys and, for Stage 1, Microsoft Teams.</li></ul><p></p>