Psychometric properties of the adapted measles vaccine hesitancy scale in Sudan

Abstract

Background There is a need for reliable and validated tools to identify, classify, and quantify vaccine-hesitancy in low and middle-income countries, such as Sudan. We evaluated the psychometric properties of an adapted version of the measles vaccine hesitancy scale by assessing its reliability, convergent validity, and criterion validity in Sudan. The vaccine hesitancy scale (VHS) was originally developed by the WHO/SAGE Working Group of Vaccine Hesitancy. Methods A community-based survey among parents was conducted in February 2019 in Khartoum state. We conducted exploratory and confirmatory factor analysis to examine the structure of the adapted measles VHS (aMVHS). We computed Cronbach's alphas, correlations with other vaccine hesitancy measurements including the Parental Attitude towards Childhood Vaccination (PACV) and the Vaccine Confidence Index (VCI), and performed a Mann-Whitney U test for assessing the reliability and the convergent and criterion validity, respectively. Moreover, to examine whether the aMVHS can predict the child's vaccination status, the area under the curve (AUC) was estimated using receiver operator characteristic (ROC) curves. Results The questionnaire was completed by 500 parents. Most were women (87.2%) between the ages of 20 and 47 (M = 31.15, SD = 5.74). The factor analyses indicated that the aMVHS comprises of two factors (sub-scales): 'confidence' and 'complacency'. The aMVHS subscales correlated weakly to moderately with the PACV and VCI scales. The area under the curve was 0.499 at most (P >0.05) and the aMVHS score did hardly differ between actually vaccinated and non-vaccinated children.

Validity and reliability study of the vaccine hesitancy scale in Turkish sample

“…Similarly, we found that the 9-item version showed the best goodness of fit. Many studies also found that CFA complies well [16,18,37].…”

“…Also, Luyten et al [37] used the English version and determined that the scale consisting of two factors and 9 items explained 71.8% of the total variance . Sabahelzain et al [18] observed that the two-factor structure of the 10-item version of the scale made up 50.8% of the total variance in the study of adapting the scale to the Saudi language. This study was found that the scale consisting of two factors and a total of 9 items constituted 68.69% of the total variance.…”

“…In response to this recommendation, one of these tools with the potential to measure and compare vaccine hesitancy across countries and overtime was the Vaccine Hesitancy Scale (VHS). This tool has been approved and evaluated in Canada, Guatemala, and more recently in the United Kingdom and Sudan [15][16][17][18]. Findings from these four countries revealed that VHS is a valid and reliable tool for measuring vaccine hesitancy.…”

“…Findings from these four countries revealed that VHS is a valid and reliable tool for measuring vaccine hesitancy. Also, it was recommended that VHS needs further adaptation and validation in different contexts [15][16][17][18]. The development and standardization of a vaccine hesitancy measure are crucial to improving jurisdiction and the ability to measure, evaluate and compare over time.…”

Aşi Tereddüdü Ölçeği̇ni̇n Türkçe Geçerli̇k Ve Güveni̇rli̇ği̇

“…Ölçeğinin Türkçe Geçerlik Ve Güvenirliği 502 Tortop, 2020;Çevik vd., 2019;Domek et al, 2018;Larson, 2015;Opel et al, 2011;Roberts et al 2015;Shaheera et al, 2017) veya enflüanza (Streltz et al, 2015, HPV (McRee et al, 2010;Sunar ve Süt, 2019), kızamık (Sabahelzain, 2020) veya genel çocukluk çağı aşıları (Napolitano et al, 2018;Shapiro et al, 2018;Önal et al, 2021) gibi belli aşılara özgüdür. Ayrıca SAGE Aşı Grubunun ölçüm aracı ABD (Kempe et al, 2020), Romanya Guatemala, Etiyopya (Wagner et al, 2019, (Miko et al, 2019), Çin (Ren et al, 2018), Fransa (Bacquier et al, 2018 gibi birçok farklı kültür ve ülkedeki ebeveynlere uygulanmıştır.…”