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