Psychometric evidence of a perception scale about covid 19 vaccination process in Peruvian dentists: a preliminary validation
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Date
2022-10-28Author(s)
Cayo Rojas, César Félix
Córdova‑Limaylla, Nancy
Briceño‑Vergel, Gissela
Ladera‑Castañeda, Marysela
Cachay‑Criado, Hernán
López‑Gurreonero, Carlos
Cornejo‑Pinto, Alberto
Cervantes‑Ganoza, Luis
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Background: In the current pandemic context, dental professionals have greater occupational risks due to their
healthcare activity, placing their expectations on the vaccine as a means of protection and at the same time hoping
that the immunization process will be safe, reliable and comfortable, giving them greater peace of mind when they
return to work. Therefore, the aim of the present study was to develop and provide a preliminary validation of a scale
to measure perception of the COVID-19 vaccination process in Peruvian dental professionals.
Methods: Cross-sectional study with instrumental design. The scale was self-administered virtually. It was distributed
through social networks to 220 dental professionals from two universities in the Peruvian capital between June and
August 2021. The Aiken V was used for content analysis, while descriptive statistics such as mean, variance, kurtosis
and skewness were used for construct validation, in addition to Pearson’s correlation matrix for analysis of the 18
items. Subsequently, a Parallel Analysis based on minimum rank factor analysis was performed. Finally, the reliability of
the total scale and its dimensions was evaluated with Cronbach’s alpha.
Results: The Aiken V coefcient values were favorable for all items. Parallel analysis indicated the existence of three
dimensions. Principal component analysis with rotation suggested grouping eight items for the frst dimension, six
items for the second dimension and four items for the third dimension. These dimensions showed good reliability,
as Cronbach’s alpha was 0.87, (95% confdence interval [CI]: 0.84–0.90), 0.80 (95% CI: 0.75–0.84) and 0.82 (95% CI:
0.78–0.86), respectively. In addition, the overall reliability of the scale was 0.89 (95% CI: 0.86–0.91), being acceptable.
Conclusions: The perception scale of the COVID-19 vaccination process in dental professionals proved preliminar‑
ily to be a valid and reliable scale that can be used for research purposes. However, it is recommended to extend its
application and evaluate its metric properties in other health professionals.
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