Table 1

Baseline and follow-up data collection time points

Time pointOutcomes measuredTools
Clinical identificationBaseline demographic informationClinical inclusion eligibility criteria
First telephone eligibility screening—preoperativeConfirm baseline demographic information, home fabric and eligibilityTelephone screening eligibility questionnaire
Visit A—preoperative, self-completionHrQoL, function status, pain, anxiety and depression, patient self-rating of hip or knee functionEQ-5D-5L, SF 12, HADS, OHS or OKS, HOOS/KOOS (QoL subscale)
Visit C—preoperative interviewQuestions relating to history to referral for surgery, household constitution, experience of home health technology, household preparation and constitution, expectations of mobility and functionTopic guide box 1
First telephone follow-up (4–9 days after hospital discharge)Baseline demographic information, HrQoL, function status, pain, anxiety and depression, patient self-rating of hip or knee function, sleep routines/habitsEQ-5D-5L, SF-12, HADS, OHS or OKS, HOOS/KOOS (QoL subscale), PSQI
Second telephone follow-up (6/52)Baseline demographic information, HrQoL, function status, pain, anxiety and depression patient self-rating of hip or knee function, sleep routines/habitsEQ-5D-5L, SF-12, HADS, OHS or OKS, HOOS/KOOS (QoL subscale), PSQI
Third telephone follow-up (12/52)Baseline demographic information, HrQoL, SF-12, pain, HADS, patient self-rating of hip or knee function HADS, patient self-rating of hip or knee function, sleep routines/habitsEQ-5D-5L, SF-12, HADS, OHS or OKS, HOOS/KOOS (QoL subscale), PSQI
Visit D—2-week postoperative interviewQuestions relating to experience of living with SPHERE technology relating to PROMsTopic guide box 2
6–9 month postoperative health professional focus groupQuestions relating to the usability of SPHERE technology data compared with PROMsTopic guide box 3
  • EQ-5D-5L, EuroQol 5D-5L; HADS, Hospital Anxiety and Depression Scale; HOOS/KOOS, Hip/Knee Dysfunction Osteoarthritis Outcome Score; HrQoL, health-related quality of life; OHS, Oxford Hip Score; OKS, Oxford Knee Score; PROM, patient-reported outcome measure; PSQI, Pittsburgh Sleep Quality Index; SF-12, Short Form 12; SPHERE, Sensor Platform of Healthcare in a Residential Environment.