Abstract
Knee and hip osteoarthritis (KHOA) are a source of functional impairment. With aging, the management of osteoarthritis (OA) is a major issue in the search for improved quality of life. Spa treatment provides short- and mid-term symptom relief without serious side effects. This study aimed to identify characteristics of patients with KHOA associated with use of spa treatment. The prospective KHOALA cohort included 878 adults aged 40 to 75 years with symptomatic KHOA. We separately analyzed knee and hip OA data and compared patients who never had spa treatment with those who had at least one or multiple treatments during 5 years of follow-up in terms of socio-demographic characteristics, clinical data, quality of life (OAKHQOL, SF-36), physical activity (MAQ), functional impairment (WOMAC), and health care consumption (pharmacological and non-pharmacological treatments). Factors associated with at least one or multiple spa treatments were evaluated with regression logistic models. In all, 607 (69.1%) patients had knee OA (KOA), 222 (25.3%) hip OA (HOA) and 49 (5.6%) both, 91 (13.9%) with KOA, and 33 (12.2%) with HOA had at least one spa treatment. In the KOA cohort, the probability of at least one, two, or three spa treatments was increased with older age (odds ratio = 1.6 [95% confidence interval 1.2–2.2], 1.8 [1.2–2.8], 2.4 [1.4–4.2], respectively), greater use of physiotherapy (OR = 3.9 [2.1–7.1], 2.7 [1.3–5.6], 2.5 [1.1–5.9]), having a prosthesis (OR = 2.1 [1.2–3.8], 2.2 [1.1–4.3], 2.5 [1.1–5.5]), and low MAQ score (OR = 0.7 [0.6–0.9], 0.7 [0.5–1.0], 0.7 [0.5–1.0]). In the HOA cohort, female sex was associated with at least one (OR = 3.0 [1.1–8.0]) or two (OR = 5.1 [1.2–22.5]) spa treatments. In this cohort of KHOA, repeated spa treatment over 5 years was strongly associated with older age, greater use of physiotherapy and presence of a prothesis with KOA and female sex with HOA. This study may help to better understand spa treatment determinants in OA.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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The authors thank the scientific committee, the research team of the KHOALA study, the inclusion centers, and the KHOALA participants.
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This work was supported by the Métropole du Grand Nancy, the Université de Lorraine, and the Centre Hospitalier Régional Universitaire de Nancy. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.
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All authors contributed to the study conception and design. Material preparation and analysis were performed by Willy Ngueyon Sime and Asma Zbitou. The first draft of the manuscript was written by Asma Zbitou and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This study was performed in line with the principles of the 1964 Declaration of Helsinki. Ethics approval for the cohort study was obtained from the CPP Est III (no. 07.01.01). The study was registered at ClinicalTrials.gov (no. NCT00481338).
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Zbitou, A., Rat, AC., Ngueyon Sime, W. et al. Characteristics of patients with knee and/or hip osteoarthritis undergoing spa treatment: the prospective KHOALA cohort study. Int J Biometeorol 66, 573–590 (2022). https://doi.org/10.1007/s00484-021-02220-y
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DOI: https://doi.org/10.1007/s00484-021-02220-y