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Table 4 Model Fit Indices of Factor Extraction at 1 month postpartum and test of dimensionality at 3 months postpartum

From: Adaptation and psychometric evaluation of the breastfeeding self-efficacy scale to assess exclusive breastfeeding

Factor Extraction (n = 239)
Rotation Analytical Technique AIC1 BIC2 χ23 df 4 RMSEA5 CFI6 TLI7 SRMR8
Geomin Oblique Rotation EFA 9 (11 items)         
Eigenvalues 4.29, 1.40, 1.01         
  One-factor model 7747.46 7862.18 344.64 44 0.17 0.70 0.62 0.08
  Two-factor model 7521.89 7671.38 99.07 34 0.09 0.93 0.89 0.06
Test of Dimensionality (n = 238)   AIC BIC χ2 df RMSEA CFI TLI WRMR 10
Geomin Oblique Rotation (Initial CFA test) CFA 11 (2 factors) 5837.01 5934.11 90.62 26 0.10 0.94 0.91 0.61
After re-specification (Geomin Oblique Rotation) CFA (2 factors) 5808.44 5912.48 58.05 24 0.08 0.97 0.95 0.60
  1. Notes: 1AIC = Akaike, 2BIC = Bayesian, 3χ2 = chi-square goodness of fit statistic; 4df = degrees of freedom; 5RMSEA (≤0.08) = Root Mean Square Error of Approximation; 6CFI (≥0.95) = Comparative Fit Index; 7TLI (≥0.95) = Tucker Lewis Index; 8SRMR (≤0.08) = Standardized Square Root Mean Residual; 9EFA = Exploratory Factor Analysis; 10WRMR (≤1.0) = Weighted Root Mean Square Residual; 11CFA = Confirmatory Factor Analysis; All goodness-of-fit tests were statistically significant at p < 0.0001