Table 2.
Content of the questionnaires
| measured in questionnaire | ||||||
| outcome measure | assessment | at baseline | at 3 months | at 6 months | at 12 months | at 18 months |
| - characteristics of the complaint |
- questions about severity and duration of the complaint (Where and how long do you have complaints? What do you think is the cause of your complaints? Did you visit any kind of doctor, therapist, or social worker? Did you use any medication to relieve your complaint during the past 3 months? What did your GP do concerning your complaint? Have you had the complaint before during the past year? How often did your complaint bother you during the past 3 months? Do you have any other complaints?) | X | X | X | X | X |
| - pain | - 11-point numerical rating scale [31] | X | X | X | X | X |
| - perceived recovery | - 6-point rating scale (completely recovered, much improved, improved, no change, worse, much worse) [31] | X | X | X | X | |
| - functioning | - scales from the SF-36[26]: physical and emotional role-functioning | X | X | X | X | |
| - all scales of SF-36 | X | |||||
| - complaint specific functioning 1. upper extremities and neck 2. hip or knee - ankle or foot |
- complaint specific questionnaires 1. based on the Pain Free Function questionnaire [28] and the Copenhagen Neck Functional Disability Scale [29] Western Ontario and McMaster Universities OA index (WOMAC) [32,33] - Foot Function Index [34] |
X | X | X | X | X |
| Sick leave | number of days of absence and reason of absence in past 3 months because of the complaint at issue | X | X | X | X | X |
| Perceived General Health | scale from the SF-36[26]: perceived general health | X | X | X | X | X |
| Perceived overall Quality of life | 5-point rating scale | X | X | X | X | X |
| determinants: intra-individual | ||||||
| Sociodemographic characteristics: | age, sex, pregnancy | X | X | X | X | X |
| right-/left-handedness, ethnicity (Dutch, Surinamese, Antillean/Aruban, Turkish, Moroccan), marital status (unmarried/never been married, married/living together, widow, divorced), household composition (number of persons and number of children below 5 years of age), length, weight, smoking behavior (smoking every day, smoking now and then, not smoking but previously every day, not smoking but previously now and then, never smoked), educational level and work status (number of working hours (paid activities) per week; 6-point rating scale), profession/occupation (open question) | X | |||||
| Comorbidity | list of complaints and diseases [35] | X | ||||
| Pain coping | Pain Coping Inventory (PCI) [36] | X | ||||
| Mood | distress scale from the Four Dimensional Symptom Questionnaire (4DSQ) [37], | X | X | X | X | X |
| Kinesiophobia | derived from the Tampa Scale [38,39]. and the Fear Avoidance and Beliefs Questionnaire (FABQ) [40] | X | ||||
| Optimism | Life Orientation Test (LOT) [41,42] | X | ||||
| Fatigue | SF-36 vitality scale | X | ||||
| determinants: extra-individual | ||||||
| Psychosocial job characteristics | Job Content Questionnaire (JCQ) [43] | X | ||||
| Physical workload | based on the Dutch Musculoskeletal Questionnaire [44] | X | ||||
| Physical activity during leisure time | type of physical activity and how often | X | X | X | X | X |
| Social support | Social Support Scale (SOS) [45] | X | ||||
| Treatment | - actions/advice by the GP (wait and see, drug prescriptions, rest, referral to therapist or specialist, exercises, injection, hot or cold compresses) - actions by the patient (self-medication) |
X | X | X | X | X |