Table 3.
Simple structures of miRNAs at neonatal and 6.5-month period and comparison of nested competing models.
| Model Tested | χ2 | d.f | p-value | Δ χ2 | D.F | AIC | BIC | SABIC |
|---|---|---|---|---|---|---|---|---|
| 2 Weeks of Age (T2wk) | ||||||||
| T2wk: Unidimensional | 179.058 | 118 | < 0.001*** | – | – | 3650.815 | 3756.133 | 3592.699 |
| T2wk: 3-factor correlated | 149.17 | 115 | 0.018* | 29.888*** | 3 | 3626.927 | 3738.321 | 3565.458 |
| T2wk: Bifactor model | 110.73 | 101 | 0.239 | 38.440*** | 14 | 3616.487 | 3756.236 | 3539.372 |
| 6.5 Months of Age (T6.5mo) | ||||||||
| T6.5mo: Unidimensional | 332.276 | 206 | < 0.001*** | – | – | 5612.817 | 5764.941 | 5547.685 |
| T6.5mo: 3-factor correlated | 274.617 | 203 | 0.0002** | 57.659*** | 3 | 5561.158 | 5719.896 | 5493.194 |
| T6.5mo: Bifactor model | 247.454 | 184 | 0.013* | 27.163*** | 19 | 5571.995 | 5772.622 | 5486.096 |
Italics denote chosen model. AIC, Akaike’s information criterion; BIC, Bayesian information criterion; SABIC, sample-size-adjusted Baysian information criterion; χ2, omnibus chi-squared test χ2; d.f., degrees of freedom; Δχ2, chi-squared difference test; ΔD.F., difference of degress of freedom. P-values are from the omnibus chi-squared test with significance denoted as *p < 0.05; **p < 0.01; ***p < 0.001.