A randomised control trial and cost-consequence analysis to examine the effects of a print-based intervention supported by internet tools on the physical activity of UK cancer survivors

Abstract

ObjectiveThe objective of this study was to evaluate the effectiveness of a print-based intervention supported by Internet tools at improving physical activity in cancer survivors compared with a standard letter recommendation. Prediagnosis physical activity and self-efficacy were hypothesised to predict physical activity improvement. Study designWaiting list randomised control trial and cost-consequence analysis. MethodsAdult cancer survivors who could become physically active without prior medical approval were randomised to receive either a print-based intervention supported by Internet tools (intervention, n = 104) or a standard letter recommendation (control, n = 103). Physical activity was assessed at 12 weeks with maintenance assessed at 24 weeks in the intervention arm. The number needed to treat was calculated, and a cost-consequence analysis completed. ResultsParticipants in receipt of a print-based intervention supported by Internet tools improved their physical activity by 36.9% over 12 weeks compared with 9.1% in the control arm. Physical activity was maintained at 24 weeks in the intervention arm. A total of 6.29 cancer survivors needed to receive the intervention for one cancer survivor to improve their physical activity over a standard letter recommendation. Intervention delivery cost £8.19 per person. Prediagnosis physical activity and self-efficacy did not predict physical activity improvement. ConclusionA print-based intervention supported by Internet tools offers a promising low-cost means to intervene to improve physical activity in cancer survivors.The study was registered with the International Standard Randomised Controlled Trials Number registry (registration number: 66418871), and ethical approval was received from the University of Surrey (reference: UEC/2017/023/FHMS).