Al-Mohrej Omar A, Alshammari Faris O, Aljuraisi Abdulrahman M, Bin Amer Lujain A, Masuadi Emad M, Al-Kenani Nader S
Department of Orthopaedics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
Department of Emergency Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia.
Int Orthop. 2018 Apr;42(4):819-827. doi: 10.1007/s00264-017-3743-4. Epub 2017 Dec 29.
Studies on total knee arthroplasty (TKA) in Saudi Arabia are scarce, and none have reported the knowledge and attitude of the procedure in Saudi Arabia. Our study aims to measure the knowledge and attitude of TKA among the adult Saudi population.
To encompass a representative sample of this cross-sectional survey, all 13 administrative areas were used as ready-made geographical clusters. For each cluster, stratified random sampling was performed to maximize participation in the study. In each area, random samples of mobile phone numbers were selected with a probability proportional to the administrative area population size. Sample size calculation was based on the assumption that 50% of the participants would have some level of knowledge, with a 2% margin of error and 95% confidence level. To reach our intended sample size of 1540, we contacted 1722 participants with a response rate of 89.4%.
The expected percentage of public knowledge was 50%; however, the actual percentage revealed by this study was much lower (29.7%). A stepwise multiple logistic regression was used to assess the factors that positively affected the knowledge score regarding TKA. Age [P = 0.016 with OR of 0.47], higher income [P = 0.001 with OR of 0.52] and participants with a positive history of TKA or that have known someone who underwent the surgery [P < 0.001 with OR of 0.15] had a positive impact on the total knowledge score.
There are still misconceptions among the public in Saudi Arabia concerning TKA, its indications and results. We recommend that doctors use the results of our survey to assess their conversations with their patients, and to determine whether the results of the procedure are adequately clarified.
沙特阿拉伯关于全膝关节置换术（TKA）的研究很少，且尚无研究报道沙特阿拉伯民众对该手术的了解情况和态度。我们的研究旨在衡量沙特成年人群对TKA的了解情况和态度。
为了涵盖这项横断面调查的代表性样本，将所有13个行政区用作现成的地理集群。对于每个集群，进行分层随机抽样以最大程度地提高研究参与度。在每个地区，按与行政区人口规模成比例的概率选择手机号码随机样本。样本量计算基于这样的假设，即50%的参与者具有一定程度的了解，误差幅度为2%，置信水平为95%。为了达到我们预期的1540个样本量，我们联系了1722名参与者，回复率为89.4%。
公众预期的了解率为50%；然而，本研究揭示的实际比例要低得多（29.7%）。采用逐步多元逻辑回归来评估对TKA知识得分有积极影响的因素。年龄[P = 0.016，比值比为0.47]、较高收入[P = 0.001，比值比为0.52]以及有TKA阳性病史或认识接受过该手术的人的参与者[P < 0.001，比值比为0.15]对总知识得分有积极影响。
沙特阿拉伯公众对TKA及其适应症和结果仍存在误解。我们建议医生利用我们的调查结果来评估他们与患者的沟通情况，并确定该手术的结果是否得到了充分说明。
