| Instrumentation | T1 | T2 | T3 | T4 |
---|---|---|---|---|---|
Primary outcome measures | Â | Â | Â | Â | Â |
Fatigue | Checklist Individual Strength (CIS; domain: fatigue) [47] | X | X | X | X |
Daily activity performance | Sickness Impact Profile 68 (SIP-68; domains: mobility range, mobility control, social behaviour) [61] | X | X | X | X |
HRQoL | Medical Outcome Study 36-Item Short-Form Health Survey (SF-36) [52] | X | X | X | X |
Secondary outcome measures | Â | Â | Â | Â | Â |
ICF: Body functions | Â | Â | Â | Â | Â |
Pain | Visual Analogue Scale (VAS) | X | X | X | X |
Emotional states | X | X | X | X | |
Sleep disturbances | Nottingham Health Profile (NHP; domain: sleep) [64] | X | X | X | X |
Cardio-respiratory fitness | Submaximal exercise test with cycle ergometer | X | X | X | X |
Neuromuscular capacity | Fixed dynamometry and electrical stimulation | X | X | X | X |
ICF: Activities/Participation | Â | Â | Â | Â | Â |
Physical activity level in daily life | Activity Monitor (StepWatch, Cyma, Seattle, WA) on 7 consecutive days | X | X | X | X |
Perceived participation | Impact on Participation and Autonomy Questionnaire (IPA) [65] | X | X | X | X |
Functional Capacity | Timed-Up-and-Go test (TUG) [66] and 2-minute walk test (2-MWT) [67] | X | X | X | X |
ICF: Personal Factors | Â | Â | Â | Â | Â |
Illness cognitions | Illness Cognitions Questionnaire (ICQ) [51] | X | X | X | X |
Coping | Coping Inventory for Stressful Situations (CISS-21) [68] | X | X | X | X |
General Self Efficacy | General Self Efficacy Scale (ALCOS-16) [69] | X | X | X | X |
Effect Modifiers | Â | Â | Â | Â | Â |
General effect modifiers | Â | Â | Â | Â | Â |
Demographic variables (age, gender, education, ethnicity, social-economical status) | Â | X | Â | Â | Â |
PPS main complaints | Polio Problem List (PPL) [9] | X | X | X | X |
PPS disease severity | Medical Research Council scale (MRC) [26] | X | Â | Â | Â |
Co-morbidity | Cumulative Illness Rating Scale (CIRS) [70] | X | X | X | X |
Serum creatine kinase activity | Venipuncture | X * | X | X | X |
ICF: Environmental factors | Â | Â | Â | Â | Â |
Social support | Social Support Inventory (SSL-D) [60] | X | X | X | X |
HRQoL (partner) | Medical Outcome Study 36-Item Short-Form Health Survey (SF-36) [52] | X | X | X | X |
Coping (partner) | Coping Inventory for Stressful Situations (CISS-21) [68] | X | X | X | X |
Caregiver Strain (partner) | Caregiver Strain Index (CSI) [71] | X | X | X | X |
Economic evaluation | Â | Â | Â | Â | Â |
HRQoL | EuroQol-5D [41] | X | X | X | X |
Resource use | Cost diaries | X | X | X | X |