Reliability and Dimensionality of EPREVO (“Experiencias de Parto Relacionadas a Violencia Obstétrica”): Development of a New Instrument, Ecuador

BACKGROUND: A new instrument called EPREVO has been developed to measure obstetric violence in Ecuador and the objective of this work is to validate its reliability and structural dimensionality. METHODS: Using confirmatory factor analysis (CFA) with a tetrachoric correlation approach. We examined the factor structure of EPREVO, a Spanish instrument to measure obstetric violence. Kuder Richardson values were used to assess the internal consistency of the scale and dimensionality was confirmed with confirmatory factor analysis. RESULTS: Confirmatory factor analysis supported a 3-factor solution. Most item-to-factor-correlations presented moderate to strong magnitude. Total Kuder Richardson was 0.87, while for the three factors were 0.23, 0.47 and 0.94, respectively. The model’s goodness-of-fit indexes were satisfactory (χ2 = 1458.83; χ2/g.l = 2.60, p < 0.001; NNFI = 0.90; RMSEA = 0.09); most of the factor loads were greater than 0.30. A confirmatory factor analysis suggested a 3-dimensional structure of EPREVO. CONCLUSION: The scale’s factor structure presented satisfactory validity and reliability results, except for one factor. The 30 items scale could potentially be used as an instrument for assessing obstetric violence in different healthcare settings.