Calderon Caterina, Jiménez-Fonseca Paula, Ferrando Pere Joan, Jara Carlos, Lorenzo-Seva Urbano, Beato Carmen, García-García Teresa, Castelo Beatriz, Ramchandani Avinash, Muñoz María Mar, Martínez de Castro Eva, Ghanem Ismael, Mangas Montse, Carmona-Bayonas Alberto
Department of Clinical Psychology and Psychobiology. Faculty of Psychology. University of Barcelona, Spain.
Department of Medical Oncology. Hospital Universitario Central of Asturias, Oviedo, Spain.
Int J Clin Health Psychol. 2018 May-Aug;18(2):143-151. doi: 10.1016/j.ijchp.2017.12.001. Epub 2018 Feb 13.
This study sought to assess the psychometric properties of the 9-item Shared Decision-Making Questionnaire (SDM-Q-9) in patients with resected, non-metastatic cancer and eligible for adjuvant chemotherapy. A total of 568 patients were recruited from a multi-institutional, prospective, transversal study. Patients answered the SDM-Q-9 after visiting their medical oncologist who, in turn, completed the SDM-Q-Physician version. Reliability, factorial structures [exploratory factor analysis (EFA), confirmatory factor analysis (CFA)], and convergent validity of the SDM-Q-9 scores were explored. SDM-Q-9 showed a clear factorial structure, compatible with a strong and replicable general factor and a secondary group factor, in patients with resected, non-metastatic cancer. Total sum scores derived from the general factor showed good reliability in terms of omega coefficient: .90. The association between patient and physician perception of SDM was weak and failed to reach statistical significance. Males and patients over 60 years of age displayed the greatest satisfaction with SDM. SDM-Q-9 can aid in evaluating SDM from the cancer patients' perspective. SDM-Q-9 is helpful in studies examining patient perspectives of SDM and as an indicator of the degree of quality and satisfaction with health care and patient-physician relationship.
本研究旨在评估9项共同决策问卷（SDM-Q-9）在接受手术切除、无转移且适合辅助化疗的癌症患者中的心理测量学特性。从一项多机构、前瞻性横断面研究中招募了总共568名患者。患者在拜访肿瘤内科医生后回答SDM-Q-9问卷，而肿瘤内科医生则完成SDM-Q-医生版问卷。对SDM-Q-9评分的信度、因子结构[探索性因子分析（EFA）、验证性因子分析（CFA）]和收敛效度进行了探索。在接受手术切除、无转移的癌症患者中，SDM-Q-9呈现出清晰的因子结构，与一个强大且可重复的一般因子和一个次要组因子相符。从一般因子得出的总分在ω系数方面显示出良好的信度：0.90。患者和医生对共同决策的认知之间的关联较弱，未达到统计学显著性水平。60岁及以上的男性和患者对共同决策的满意度最高。SDM-Q-9有助于从癌症患者的角度评估共同决策。SDM-Q-9有助于研究了解患者对共同决策的看法，并作为医疗保健质量和满意度以及医患关系程度的指标。
