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Table 2 Timing of measurements and outline of primary and secondary outcome measures

From: Effectiveness of intramuscular corticosteroid injection versus placebo injection in patients with hip osteoarthritis: design of a randomized double-blinded controlled trial

  Baseline Daily diary for 2 weeks 2 weeks 4 weeks 6 weeks 12 weeks
Primary outcome measures
Pain score (WOMAC*) x   x x x x
Pain Score (NRS**) x x x x x x
Secondary outcome measures
Function score (WOMAC) x   x x x x
Stiffness score (WOMAC) x   x x x x
HOOS*** x   x x x x
Quality of life (EuroQol EQ-5D) x   x x x x
Constant and intermittent pain (ICOAP#) x   x x x x
Use of medication x x x x x x
Medical consumption x   x x x x
Adverse reactions    x x x x
Perceived recovery    x x x x
Others
Demographic data x      
Co-morbidity x      
Physical examination hip, knee and lumbar spine x      x
Laboratory assessment (ESR##, Hs-CRP###) x      
  1. * WOMAC Western Ontario and McMaster University Osteoarthritis Index
  2. ** NRS Numerical Rating Score
  3. *** HOOS Hip disability and Osteoarthritis Outcome Score
  4. # ICOAP Intermittent and Constant Osteoarthritis Pain
  5. ## ESR Erythrocyte Sedimentation Rate
  6. ### Hs-CRP high sensitive C-reactive protein