Data collection
One-on-one, in-depth qualitative interviews were conducted from January to July 2019 with all 80 participants enrolled in the clinical trial. A second subset of 21 interviews was also conducted to triangulate results via member checking. Overall, 101 interviews were completed and audio recorded.Study interviews were conducted by four Ugandan research assistants (two male, two female) in the local language, Runyankole, and in a private setting at the participant’s home. An interview guide was created by a multidisciplinary group of Ugandan and US-based investigators in order to ensure consistent focus on core concepts, while allowing for exploration of novel concepts that emerged during the course of the study. Interviews explored the impacts of solar lighting on participants’ daily lives. Research assistants translated and transcribed each interview into English verbatim within 72 hours, and before conducting additional interviews. Translations were spot-checked by author MT, fluent in both Runyankole and English, in order to ensure the quality and fidelity of translations. PL reviewed transcripts for quality and content as they were generated.