Table 5. Model fit indices of factor extraction at 15 months postpartum and tests of dimensionality at 18 months postpartum.
| Factor Extraction (N = 241) | |||||||
| Rotation | Analytical Technique | χ23 | df4 | RMSEA5 | CFI6 | TLI7 | SRMR8 |
| Geomin Oblique | EFA1: HHWI (20 items) | ||||||
| 1 Factor (Ev2 = 15.86) | 1144 | 170 | 0.15 | 0.97 | 0.97 | 0.06 | |
| 2 Factors | 526.1 | 151 | 0.10 | 0.99 | 0.99 | 0.04 | |
| Tests of Dimensionality (N = 186) | χ2 | df | RMSEA | CFI | TLI | WRMR9 | |
| Geomin Oblique | CFA10 (1 Factor) | 1079.4 | 170 | 0.17 | 0.96 | 0.96 | 2.05 |
| Bi-Geomin Oblique | Bifactor | 412.9 | 150 | 0.09 | 0.99 | 0.98 | 0.94 |
Notes
1Exploratory Factor Analysis
2Eigenvalues
3chi-square goodness of fit statistic
4degrees of freedom
5RMSEA (≤0.10) = Root Mean Square Error of Approximation
6CFI (>0.95) = Comparative Fit Index
7TLI (>0.95) = Tucker Lewis Index
8SRMR (≤0.08) = Standardized Root Mean Square Residual
9WRMR (<1.0) = Weighted Root Mean Square Residual
10CFA = Confirmatory Factor Analysis.
All chi-square goodness-of-fit tests were statistically significant at p<0.001