Table 4.
Multiple Group Confirmatory Factor Analysis for Race, Sex Assigned at Birth, and Age.
| Model invariance | χ2(df) | CFI | RMSEA (90CI) | SRMR | Model comp | Δχ2(Δdf) | ΔCFI | ΔRMSEA | ΔSRMR | Decision |
|---|---|---|---|---|---|---|---|---|---|---|
| Race (AI [n = 1,084] and non-Hispanic White) [n = 837] | ||||||||||
| M1: Configural | 519.272 (130)* | .962 | .060 [0.051, 0.061] | .091 | — | — | — | — | — | — |
| M2: Scalar | 581.116 (141)* | .957 | .057 [0.052, 0.062] | .093 | M1a | 61.844 (11)* | .005 | .003 | .002 | Accept |
| Sex assigned at birth (female [n = 1,153] and male [n = 1,061]) | ||||||||||
| M1: Configural | 591.644 (130)* | .966 | .057 [0.052, 0.061] | .085 | — | — | — | — | — | — |
| M2: Scalar | 682.022 (141)* | .960 | .059 [0.055, 0.063] | .089 | M1b | 90.378 (11)* | .006 | .002 | .004 | Accept |
| Age (15–27 [n = 1,931] and 18–21 [n = 283]) | ||||||||||
| M1: Configural | 572.645 (130)* | .964 | .055 [0.051, 0.060] | .080 | — | — | — | — | — | — |
| M2: Scalar | 570.326 (141)* | .965 | .052 [0.048, 0.057] | .080 | M1c | 2.319 (11) | .001 | .003 | 0 | Accept |
Note. CFI = comparative fit index; RMSEA = the root-mean square error of approximation; CI = confidence interval; SRMR = standardized root mean square residual; AI = American Indian; M1a = Model 1; M2 = Model 2.
*
p ≤ .001.