OA is one of the most prevalent diseases affecting people globally and is a leading cause of pain and disability among adults [18, 19]. Despite being such a widespread and severe disease, it usually associates with the false belief that it is a normal part of aging and that patients have to accept and live with it. This false myth, for example, makes OA patients least likely to receive exercise therapy and weight loss advice as recommended by international clinical guidelines as a first-line treatment for OA.[20]
Empowering patients to have a more active role in their health and engaging them in research are key aspects to ensure the effective implementation of interventions aimed at improving QoL of patients and, consequentially, the current OA management strategies. Patients should be considered as another stakeholder within the health system and patients’ organizations should be considered as another healthcare agent, present in real decision making, to make patient voice be heard. It is necessary to know which outcomes are relevant for patients to ensure their participation and satisfaction.
The OA Patients Task Force, an international alliance of patients’ organizations, has been working since 2016 on independent projects to make OA more visible and to empower patients. The GOAPPS survey was a pilot study designed to collect and analyze data on OA patients’ perceptions regarding their health conditions, OA care, and to explore the impact of OA on daily functioning and QoL. The results aimed at providing a portrait of patients' perceptions of OA to provide a baseline to take better quality performance in the future. As a pilot study, it aimed to capture the necessary information to carry out a large-scale survey able to compare cross-cultural and cross-national data. Also, it was a proof of concept study designed to prove the strength and capacity of patients and their organizations to the scientific community.
The results of this pilot study confirmed that OA can be considered a gendered disease being more prevalent among women [21–24]. Although, the fact that the majority of respondents were women can also be interpreted as women being more active and willing to participate in these types of surveys. The prevalence of OA increases with age in line with our results showing that the age range with the highest prevalence of OA was 65 to 74 years. However, almost a third of participants were 40 to 59 years indicating that OA also affects younger groups of people like pre-menopausal women, athletes, or injured people [25]. Finally, the majority of the respondents were from the USA. This could be a consequence of the different computer literacy existing among the different countries that participated in the survey. The data could also reflect the importance and strength that patient organizations have in each country which can associate with the structure of national health systems.
The survey results revealed that OA patients are affected by multiple comorbidities, especially arterial hypertension and obesity. Notably, half of this population suffers from depression and/or anxiety. The presence of comorbidities increases the frequency of physical disability in patients with OA, and the impact on the QoL of patients of the combination is greater than that expected for OA alone or each isolated disease [18]. Comorbidities have been reported to be more frequent in patients with OA compared with other diseases and to lead to greater deterioration of physical functions and QoL. OA increases cardiovascular mortality [26], worsens the prognosis of arthroplasties, and reduces the range of possibilities of pharmacological treatment due to the incompatibility of prescribed drugs to alleviate joint pain and treat comorbidities [4]. Finally, our results revealed a high prevalence of gastrointestinal problems which may be a consequence of the high use of NSAIDs, the oral OA treatment of choice in the majority of the cases and is related to gastrointestinal adverse effects [27].
More than three-quarters of these patients (78%), who are probably already polymedicated, ask for access to additional non-drug/non-surgical treatments for their OA. Non-pharmacological therapies such as physical activity or nutritional programs have been recommended in clinical guidelines and reported to have a positive effect on the health status and QoL of OA patients. [7, 28] It has been shown that exercise therapy may postpone total joint replacement. [29] Physical and occupational therapy-related interventions have proven to reduce pain in patients with hand OA [30, 31]. Additionally, self-management programs have shown to improve mental health and social connectedness, thereby improving many aspects of OA patients’ lives. [32–34]
The high percentage of respondents asking for access to these interventions is striking considering the existence of such extended literature describing effective interventions for OA management. This may highlight an existing gap between the theory on how to improve OA management and the reality patients have to face when living with their disease. Health systems should invest more in implementing health promotion and intervention programs in OA while partnering with patients’ organizations. Similarly, educational programs should be promoted, both for health professionals and patients. Only 58.3% of respondents said their doctors explained adequately their OA diagnosis and only 53.3% understood their OA treatment options. Educational interventions are extremely important tools able to improve patients' ability to self-manage their chronic diseases hence improving their QoL. [35, 36]
Almost all patients reported limitations in physical and work activities, as well as enormous limitations in their personal life associated with severe symptomatology (i.e., pain, stiffness, loss of flexibility among others). Pain and other OA-related symptoms can be reduced by rehabilitation programs focused on alleviating pain and maintaining or improving physical and psychological function. Rehabilitation and occupational therapy are is widely recommended as first-line treatment for OA in evidence-based clinical guidelines [32, 37–39], as they are safer and, in many cases, more effective at reducing pain than the best established pharmacological interventions. Also, regular exercise is considered to be a core treatment for OA and it is universally recommended amongst treatment guidelines for all individuals with OA. [40, 41]
When only 26.8% of respondents report being satisfied with their current treatment plan, it is not surprising that more than half of the respondents would like to have access to additional drug treatments, a request which underlines the urgent need for new medications for OA. Currently, there is no cure for OA and pharmacological treatments can help to relieve symptoms or delay the progression of the disease. However, many of these drugs cannot be used for a long time due to their adverse effects and incompatibility with medications used for OA- associated comorbidities. [26, 42–45] Furthermore, it has been previously reported that OA patients are concerned about possible side effects of medication. [46] This evidence, in association with our results, highlights the need for investment in research for new and more active OA pharmacological treatments.
In this study, only 51.7% of patients reported having a good quality of life; whereas 48.2% were either not satisfied with their QoL or not sure about their satisfaction with their QoL. It has to be noted that elderly people can have, in general, lower expectations in terms of QoL than young patients. [47] The age range of our study population was older and this may have been reflected in this survey’s QoL responses. Additionally, the false conception that OA is a natural age-related condition may lower the expectations of QoL of OA patients while highlighting the need for patient education programs which may have an impact on OA patients’ perception. When patients were asked how they would evaluate their QoL if OA was eliminated, almost 95% of respondents said they would be more satisfied. This data demonstrates the impact of OA on the QoL of people affected by this disease and the urgent need for improvement in OA management strategies.
Limitations of the study
The results of this pilot study present limitations which must be acknowledged. The data used in the analyses were based on patient self-reports, without clinical verification of an OA diagnosis, and thus are subject to the biases that are inherent to this type of data survey. Also, online questionnaires can be associated with gender and age-related biases, as women may be more prompt in using this kind of technology and elderly people may find it difficult to respond to them. This study aimed to be an international comparative survey to detect and analyze the differences across countries in the perception of OA. There is a huge difference in the number of surveys collected in each of the participant countries that could reflect cultural perceptions of this type of survey and/or technology. Caution should be taken when interpreting these findings, as there is a clear predominance of surveys answered by patients from the USA.