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Table 4 Content of 3-year postal follow-up Health Survey questionnaire (Phase 1 and Phase 2 participants)

From: The clinical assessment study of the foot (CASF): study protocol for a prospective observational study of foot pain and foot osteoarthritis in the general population

Concept Measurement method Detail
Section A: General health
Perceived general health MOS SF 12 [33] Physical and mental component summary scores
Physical function MOS SF 36 [32] Physical functioning sub-scale
Anxiety and depression Hospital anxiety and depression scale [34] Anxiety and depression sub-scales
Participation Keele Assessment of Participation (KAP) [35, 73] 5-items assessing person-perceived, performance-based participation
Physical activity Short-Form International Physical Activity Questionnaire (IPAQ) [36] Frequency and duration of 4 activities performed during previous 7 days
Section B: Specific health problems
Hallux valgus Self-completed line drawings [37] 5 line-drawings for each foot depicting increasing severity of hallux valgus
Co-morbidities Falls, fractures, chest problems, heart problems, deafness, problems with eyesight, raised blood pressure, diabetes, stroke, cancer, liver disease, kidney disease, poor circulation, rheumatoid arthritis Yes for any that apply
Intermittent claudication Edinburgh Claudication Questionnaire [38] Pain or discomfort in legs when walking, pain characteristics, pain location (leg manikin)
Bodily pain Self-completed body manikin In the past 4 weeks, have you had pain that has lasted for one day or longer in any part of your body? If yes, shade location of pain on manikin
  Site-specific questions Have you had any problems with your hands or pain in your hands/hips/knees/feet in the last year?
Section C: Foot pain
Foot pain characteristics Side of pain Both, right, left
  Duration in past 12 months < 7 days, 1-4 weeks, 1-3 months, 3+ months
  Have you ever injured your foot badly enough to see a doctor about it? No/right foot only/left foot only/both feet
  Location: self-completed foot manikin [14] In the past month, have you had any ache or pain that has lasted for one day or longer in your feet? If yes, shade location of pain on foot manikin
  Foot pain, aching, stiffness in last month [39] No days, few days, some days, most days, all days
  Foot pain intensity in last month [40] 0-10 NRS with verbal anchors (no pain, pain as bad as could be)
Complaint-specific functioning Manchester Foot Pain and Disability Index [41] 19-items across four constructs: pain, function, appearance, work/leisure
Coping strategies for foot pain Single-item coping strategies questionnaire [42] 0-6 NRS with verbal anchors (never do that, always do that)
Healthcare use Medication use in last month For foot pain, for other pain
  Consultation with general practitioner in last 12 months for foot pain  
Section D: Demographic/socioeconomic characteristics
Demographic characteristics Date of birth
Gender
 
  Marital status Married, separated, divorced, widowed, cohabiting, single
  Living arrangements Alone, not alone
Anthropometric characteristics Self-reported height  
  Self-reported weight  
Socioeconomic characteristics Current employment status Employed, not working due to ill-health, retired, unemployed/seeking work, housewife, other
  Current/recent job title Free text
  Current/recent job title of spouse Free text
  Adequacy of income [43] Find it a strain to get by from week to week, have to be careful with money, able to manage without much difficulty, quite comfortably off
Additional questions for phase 2 participants only
Foot pain characteristics Change in foot pain over past 3 years Completely recovered, much better, better, no change, worse, much worse
  Since your assessment 3 years ago, have you injured your foot badly enough to see a doctor about it? No/right foot only/left foot only/both feet
Foot pain severity Chronic Pain Grade [59] 6 questions (0-10 NRS) and 1 question (4 response options) giving grade I-IV
  Symptom satisfaction [64] 5-point Likert scale (Very dissatisfied to Very satisfied)
Healthcare use Use of services/treatments for foot pain in past 3 years GP, physiotherapist, hospital specialist, acupuncture, podiatrist, chiropodist, drugs on prescription, foot injection, foot surgery, osteopath/chiropractor, other (specify)
  1. MOS SF 12 = Medical Outcomes Study Short Form 12; MOS SF 36 = Medical Outcomes Study Short Form 36; NRS = numerical rating scale