Table 5 Model goodness-of-fit comparison between latent variable SEM and repeated measures ANOVA approach of Faecalibacterium based on four measurements (Sanger, 454 pyrosequencing V1V3, 454 pyrosequencing V3V5 and qPCR)
MODEL | MODEL CONSTRAINT | GOODNESS-OF-FIT | |
|---|---|---|---|
A: Latent variable SEM | set only λ1 = 1 | Chi-square | 5.089 (df = 2) Pr > χ2: 0.079 |
RMSEA | 0.105 | ||
CFI | 0.994 | ||
B: Equivalent to repeated measures ANOVA (multivariate approach) | set all indicator path coefficient λi ≡ 1 (i = 1, 2, 3, 4) | Chi-square | 129.955 (df = 5) Pr > χ2: < .001 |
RMSEA | 0.421 | ||
CFI | 0.750 | ||
C: Equivalent to repeated measures ANOVA (univariate approach) | set all indicator path coefficient λi ≡ 1; set all indicator error variances to be equal, var (εi) ≡ σ2 (i = 1, 2, 3, 4) | Chi-square | 172.068 (df = 8) Pr > χ2: < .001 |
RMSEA | 0.381 | ||
CFI | 0.671 | ||