Description:
Background This review aimed to 1) identify and assess the quality of discrete choice experiments (DCEs) examining preferences related to epilepsy treatment; 2) summarize the attributes and attribute levels measured in these studies; 3) identify how researchers selected and developed these attributes; and 4) identify which attributes are most impor‑ tant for epilepsy patients. Methods A systematic literature review using PubMed, Web of Science and Scopus databases from database incep‑ tion to February or April 2022. We included primary discrete-choice experiments eliciting preferences for various attributes of pharmacological and surgical interventions in patients diagnosed with epilepsy or the parents/carers of children with epilepsy. We excluded non- primary studies, studies assessing preferences for nonpharmacological treatment and studies that elicit preferences using methods other than discrete choice experiments. Two authors independently selected studies, extracted data and assessed risk of bias of studies. The quality of the included studies was assessed using two validated checklists. Study characteristics and fndings were summarized descriptively. Results A total of seven studies were included in the review. The majority of studies explored patients' preferences, and two compared the preferences of patients with physicians. The majority (n=6) compared two medications, and one compared two surgical options to continuing medication options. The studies examined 44 attributes in total, including side efects (n=26), efcacy expressed as being seizure free or have fewer seizures (n=8), costs (n=3), dos‑ ing frequency (n=3), duration of side efects (n=2), mortality (n=1), long-term problems after surgery (n=1) and surgical options (n=1). The fndings indicate that people with epilepsy have strong preferences for improving seizure control, which was ranked as the top priority in all studies. Patients also have a strong preference for the reduction of adverse efects and may be willing to make trade-ofs between improved seizure control and reduction of long-term side efects that may impact their quality of life. Conclusions The use of DCEs in measuring patients' preference for epilepsy treatment is accumulating. However, inadequate reporting of methodological details may reduce decision-makers' confdence in the fndings. Suggestions for future research are provided.