• Gordon Forbes, Sian Newton, Clara Cantalapiedra Calvete, Judy Birch, Julie Dodds, Liz Steed, Carol Rivas, Khalid Khan, Frank Röhricht, Stephanie Taylor, Brennan C Kahan, and Elizabeth Ball.
• IoPPN, King's College London, London, UK.
• BMJ Open. 2020 Mar 12; 10 (3): e030164.

ObjectivesTo evaluate the feasibility of a randomised trial of a modified, pre-existing, mindfulness meditation smartphone app for women with chronic pelvic pain.DesignThree arm randomised feasibility trial.SettingWomen were recruited at two gynaecology clinics in the UK. Interventions were delivered via smartphone or computer at a location of participants choosing.ParticipantsWomen were eligible for the study if they were over 18, had been experiencing organic or non-organic chronic pelvic pain for 6 months or more, and had access to a computer or smartphone. 90 women were randomised.InterventionsDaily mindfulness meditation delivered by smartphone app, an active control app which delivered muscle relaxation techniques, and usual care without app. Interventions were delivered over 60 days.Primary And Secondary Outcome MeasuresOutcomes included length of recruitment, follow-up rates, adherence to the app interventions, and clinical outcomes measured at baseline, two, three and 6 months.ResultsThe target sample size was recruited in 145 days. Adherence to the app interventions was extremely low (mean app use 1.8 days mindfulness meditation group, 7.0 days active control). Fifty-seven (63%) women completed 6-month follow-up, and 75 (83%) women completed at least one postrandomisation follow-up. The 95% CIs for clinical outcomes were consistent with no benefit from the mindfulness meditation app; for example, mean differences in pain acceptance scores at 60 days (higher scores are better) were -2.3 (mindfulness meditation vs usual care, 95% CI: -6.6 to 2.0) and -4.0 (mindfulness meditation vs active control, 95% CI: -8.1 to 0.1).ConclusionsDespite high recruitment and adequate follow-up rates, demonstrating feasibility, the extremely low adherence suggests a definitive randomised trial of the mindfulness meditation app used in this study is not warranted. Future research should focus on improving patient engagement.Trial Registration NumbersNCT02721108; ISRCTN10925965; Results.© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY. Published by BMJ.

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