Introduction:

The use of a mask is essential to reduce the spread of COVID-19, however, a significant percentage of people refuse to use it. Beliefs may play an important role in accepting or rejecting their use.

Objective:

To translate and determine the evidence of validity of internal structure and reliability of the self-report of beliefs about the use of masks.

Methods:

The self-report of beliefs about the use of masks was administered to 1218 people from different provinces of Peru (M age = 27,4 years, SD = 12,6), chosen in a non-probabilistic way. The instrument was subjected to a process of double translation from English to Spanish and vice versa; In addition, using the Jamovi Project version 1.6 program, the internal structure was determined with factor analysis (exploratory and confirmatory), and finally reliability was estimated.

Results:

The exploratory factor analysis identified four emerging factors that explained 53.7% of the variance. The model was verified and obtained acceptable fit indices (χ² = 154 gl = 46; p < 0,01; CFI = 0,96; TLI = 0,942; RMSEA = 0,602). In addition, standardized factor loadings greater than 0,30 were observed.

Conclusions:

The Spanish version of the self-report of beliefs about the use of masks shows evidence of validity of structure and reliability due to adequate internal consistency.

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