Abuyadek Rowan, ElHafeez Samar Abd, Tahoun Mohamed Mostafa, Othman Sally Samir, Omran Abdelrahman, Fathy Naglaa, Ghazy Ramy Mohamed
Health Administration and Behavioural Sciences Department, High Institute of Public Health, Alexandria University, Alexandria, Egypt.
Epidemiology Department, High Institute of Public Health, Alexandria University, Alexandria, Egypt.
J Egypt Public Health Assoc. 2024 Nov 18;99(1):28. doi: 10.1186/s42506-024-00174-8.
Vaccine confidence is described as a belief that vaccines are effective, safe, and part of a trustworthy health system. The objective of this study was to develop and validate an Arabic tool to evaluate confidence in the received coronavirus disease 2019 (COVID-19) vaccines (ARAB-VAX-CONF).
The research team developed the ARAB-VAX-CONF based on three areas specified by the Centers for Disease Control and Prevention (CDC): confidence in vaccine effectiveness, confidence in vaccine safety, and confidence in the healthcare system. The analysis includes data from 406 eligible vaccinated persons (≥ 18 years). Cronbach's alpha was used to measure internal consistency, while convergent, discriminant, exploratory, and confirmatory factor analyses were used to verify construct validity.
A total of 406 adults were recruited, with a mean age of 33.0 ± 12.2 years. A total of 63.1% were males, 56.7% were married, 21.9% had chronic conditions, 93.3% were nonsmokers, and 39.6% were obligated to obtain vaccines. The three domains of the scale met the criterion of internal consistency (Cronbach's alpha > 0.7). Convergent validity was identified by the significant inter-item and item-mean score of the domain correlation (P < 0.001). Discriminant validity was reported as the inter-factor correlation matrix (< 0.7). The Kaiser-Meyer-Olkin sampling adequacy measure was 0.80, and Bartlett's sphericity test was significant (P < 0.001). Exploratory factor analysis indicated that the scale could be summarized into three factors. Confirmatory factor analysis confirmed the adequate psychometric properties and fit with observed data (root-mean-square error of approximation = 0.08, comparative fit index = 0.945, Tucker-Lewis index = 0.924, standardized root-mean-square residual = 0.086, normed fit index = 0.918, and goodness-of-fit index = 0.909).
The ARAB-VAX-CONF developed in this study is valid and reliable for assessing confidence in vaccine effectiveness, safety, and confidence in the healthcare system. The ARAB-VAX-CONF can support decision-makers in addressing the gap in vaccine confidence among various populations.
疫苗信心被描述为一种认为疫苗有效、安全且是可信赖的卫生系统一部分的信念。本研究的目的是开发并验证一种阿拉伯语工具，以评估对所接种的2019冠状病毒病（COVID-19）疫苗的信心（ARAB-VAX-CONF）。
研究团队基于美国疾病控制与预防中心（CDC）规定的三个领域开发了ARAB-VAX-CONF：对疫苗有效性的信心、对疫苗安全性的信心以及对医疗保健系统的信心。分析纳入了406名符合条件的接种者（≥18岁）的数据。使用克朗巴哈系数来测量内部一致性，同时使用收敛效度、区分效度、探索性因素分析和验证性因素分析来验证结构效度。
共招募了406名成年人，平均年龄为33.0±12.2岁。其中63.1%为男性，56.7%已婚，21.9%患有慢性病，93.3%不吸烟，39.6%有义务接种疫苗。该量表的三个领域均符合内部一致性标准（克朗巴哈系数>0.7）。通过领域相关性的显著项间和项均值得分确定了收敛效度（P<0.001）。区分效度表现为因子间相关矩阵（<0.7）。Kaiser-Meyer-Olkin抽样适当性度量为0.80，Bartlett球形检验具有显著性（P<0.001）。探索性因素分析表明该量表可归纳为三个因素。验证性因素分析证实了其良好的心理测量特性以及与观测数据的拟合度（近似均方根误差=0.08，比较拟合指数=0.945，塔克-刘易斯指数=0.924，标准化均方根残差=0.086，规范拟合指数=0.918，拟合优度指数=0.909）。
本研究中开发的ARAB-VAX-CONF在评估对疫苗有效性、安全性的信心以及对医疗保健系统的信心方面是有效且可靠的。ARAB-VAX-CONF可支持决策者解决不同人群在疫苗信心方面的差距。
