The WITHIN study comprises of 3 parts which have different eligibility criteria (all UK-only):

Part 1 - A lab-based study at the Warwick Sleep & Pain Lab lasting approximately 2-3 hours duration wherein participants complete a series of experimental pain measures (Open to recruitment! For more information and a short screening, click here)

Part 2 - A longitudinal sleep-tracking survey (now remote accessible!) where participants wear an ActiWatch to track sleep/activity levels and complete daily sleep diaries & 3x daily sleep and pain surveys. (Open to recruitment!)

Part 3 - A longitudinal questionnaire which forms part of the sleep-tracking survey, is open to all adults aged 18-65 in the UK who have a diagnosed chronic pain condition. The questionnaire is repeated 3x across 1-year. (Recruitment closed 31st July 2021)

Click here to see a PDF version of the diagram