Course and predictors of pain and physical functioning in patients with hip osteoarthritis: Systematic review and meta-analysis
Mariëtte de Rooij, Marike van der Leeden, Martijn W. Heymans, Jasmijn F.M. Holla, Arja Häkkinen, Willem F. Lems, Leo D. Roorda, Cindy Veenhof, Diana C. Sanchez-Ramirez, Henrica C.W. de Vet, Joost Dekker
Amsterdam Rehabilitation Research Centre Reade, PO Box 58271 , NL-1040 HG Amsterdam, The Netherlands. E-mail: firstname.lastname@example.org
Objective: To systematically summarize the literature on: (i) the course of pain and physical functioning; and (ii) predictors of deterioration of pain and physical functioning in patients with osteoarthritis of the hip.
Methods: A literature search was conducted in PubMed, CINAHL, Embase, PsychINFO and SPORTDiscus up to July 2015. Meta-analyses and qualitative data syntheses were performed.
Results: Eleven of the 15 included studies were of high quality. With regard to the course of pain and physical functioning, high heterogeneity was found across studies (I2 > 71%) and within study populations (reflected by large standard deviations (SDs) of change scores). Therefore, the course of pain and physical functioning was interpreted to be indistinct. Clinical characteristics (higher comorbidity count and presence of knee osteoarthritis), health behaviour factors (no supervised exercise and physical inactivity) and socio-demographics (lower education) were found to predict deterioration of pain (weak evidence). Higher comorbidity count and lower vitality were found to predict deterioration of physical functioning (strong evidence). For several other predictive factors weak evidence was found (e.g. bilateral hip pain, increase in hip pain (change), bilateral knee pain, presence of knee osteoarthritis).
Conclusion: Because of high heterogeneity across studies and within study populations, no conclusions can be drawn with regard to the course of pain and physical functioning. Several clinical characteristics, health behaviours and psychosocial factors prognosticate deterioration of pain and physical functioning. These findings may guide future research aimed at the identification of subgroups of patients with hip osteoarthritis.
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