Universidade Estadual de Montes Claros - Unimontes, Center of Health and Biological Sciences, Department of Dentistry, Montes Claros, MG, Brazil.
Faculdades Unidas do Norte de Minas - Funorte, Montes Claros, MG, Brazil.
Braz Oral Res. 2023 Mar 31;37:e022. doi: 10.1590/1807-3107bor-2023.vol37.0022. eCollection 2023.
This study evaluated the construct validity of the instrument Oral Health Literacy among diabetics. A probabilistic random sample of 239 diabetics from an infinite population answered the 10 items of the questionnaire. The structural validity was assessed by confirmatory factor analysis and goodness of fit, chi-square per degrees of freedom ratio (X2/df), comparative fit index (CFI), goodness-of-fit index (GFI), and root-mean-square error of approximation (RMSEA). Internal consistency was estimated by the average variance extracted (AVE) and composite reliability (CR). The scores were dichotomized with the upper limit of the 95% confidence interval as the cutoff point. The three-dimensional model presented good quality parameters (X2 /df = 2.459; CFI = 0.988; TLI = 0.981) and poor RMSEA (0.078). Internal consistency was adequate; AVE for the Access, Understand/appraise, and Apply subscales were 0.831, 0.981, and 0.954 and the CR for these subscales were 0.893, 0.962, and 0.822, respectively. Inadequate literacy ranged from 41.8 to 48.1%. The three-dimensional model identified (access, understand/appraise, and apply) showed structural validity, good internal consistency, and understandability.
本研究评估了糖尿病患者口腔健康素养工具的结构效度。从无限总体中采用概率随机抽样方法抽取了 239 例糖尿病患者对问卷的 10 个条目进行回答。结构效度通过验证性因素分析和拟合优度、卡方自由度比（X2/df）、比较拟合指数（CFI）、拟合优度指数（GFI）和近似均方根误差（RMSEA）进行评估。内部一致性通过平均方差抽取（AVE）和综合可靠性（CR）进行估计。将得分分为两个等级，95%置信区间上限为截断点。三维模型具有良好的质量参数（X2/df=2.459；CFI=0.988；TLI=0.981）和较差的 RMSEA（0.078）。内部一致性适中；Access、Understand/appraise 和 Apply 分量表的 AVE 分别为 0.831、0.981 和 0.954，这些分量表的 CR 分别为 0.893、0.962 和 0.822。阅读能力不足的比例为 41.8%至 48.1%。三维模型确定的（获取、理解/评价和应用）具有结构有效性、良好的内部一致性和可理解性。
