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Clinical Rheumatology

, Volume 37, Issue 9, pp 2505–2515 | Cite as

A theory of planned behavior-based intervention to improve quality of life in patients with knee/hip osteoarthritis: a randomized controlled trial

  • Mohsen SaffariEmail author
  • Mohammad Kazem Emami Meybodi
  • Hormoz Sanaeinasab
  • Ali Karami
  • Amir H. Pakpour
  • Harold G. Koenig
Original Article
  • 336 Downloads

Abstract

Osteoarthritis (OA) is a common chronic disorder among elderly people that affects joints such as the knee and hip in particular. The objective of the current study was to examine the efficacy of an intervention based on a theory of planned behavior (TPB) in improving health-related quality of life in middle-age and older adults with this condition. One hundred twenty patients diagnosed with knee/hip OA were recruited from a general hospital. Measures administered at baseline were the SF-12, EuroQol (EQ-5D), Osteoarthritis Knee and Hip Quality of Life (OAKHQoL), and TPB questionnaire. Also assessed were body mass index (BMI), Kellgren–Lawrence Scale, six-minute walk test (SMWT), muscle strength, range of motion (ROM), and joint tenderness and swelling. Participants were randomly assigned to either the intervention (n = 60) or the control group (n = 60). The intervention group received an educational program based on TPB that was administered over 1 month. The control group did not receive this treatment. Three months after the intervention, both groups were reevaluated and comparisons made. Compared to the no-treatment control group, those in the intervention group scored higher on HRQoL, both general and specific, at 3-month follow-up (p < 0.01). The only exception was the vitality domain. Significant differences were also found on the TPB questionnaire, the SMWT, and muscle strength in the expected direction (p < 0.05). While those in the intervention group improved significantly on all clinical measures from pre-test to post-test, those in the control group showed improvement only on BMI and joint tenderness. This TPB-based intervention was found to be efficacious in improving HRQoL and several clinical parameters in patients with knee/hip OA. Studies are needed to examine the effectiveness of this intervention in patients with other chronic medical conditions.

Keywords

Behavior change Osteoarthritis Quality of life Randomized clinical trial 

Notes

Acknowledgments

The authors wish to thank Dr. Mojtaba Sepandi, an epidemiologist who provided advice on data analysis, and wish to gratefully acknowledge support from the deputy of clinical research at Baqiyatallah University of Medical Sciences and Baqiyatallah Hospital, who help to facilitate this study.

Compliance with ethical standards

Participants were fully informed about the study and signed a written informed consent. The ethics committee of Baqiyatallah University of Medical Sciences approved this study.

Disclosures

None.

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Copyright information

© International League of Associations for Rheumatology (ILAR) 2018

Authors and Affiliations

  1. 1.Health Research Center, Life Style InstituteBaqiyatallah University of Medical Sciences TehranIran
  2. 2.Health Education Department, Faculty of HealthBaqiyatallah University of Medical SciencesTehranIran
  3. 3.Baqiyatallah HospitalBaqiyatallah University of Medical SciencesTehranIran
  4. 4.Social Determinants of Health Research Center (SDH)Qazvin University of Medical SciencesQazvinIran
  5. 5.Department of Nursing, School of Health and WelfareJönköping UniversityJönköpingSweden
  6. 6.Psychiatry and Behavioral SciencesDuke University Medical CenterDurhamUSA
  7. 7.King Abdulaziz UniversityJeddahSaudi Arabia
  8. 8.Ningxia Medical UniversityYinchuanChina

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