Table 2.
Comparisons of Alternate Risk-Taking Models
| Model | χ2 | df | NFI | TLI | CFI | RMSEA (90% CI) | χ2 difference | df | ECVI | AIC |
|---|---|---|---|---|---|---|---|---|---|---|
| Two factors with cross-loadings | 1,070.38 | 41 | .80 | .68 | .80 | .16 (.15–.17) | 1.13 | 1,142.38 | ||
| Two factors without cross-loadings | 1,803.66 | 43 | .66 | .48 | .66 | .20 (.19–.21) | 733.28* | 2 | 1.87 | 1,871.66 |
| Two factors without cross-loadings | 1,127.67 | 43 | .79 | .68 | .79 | .16 (.15–.17) | 57.29* | 2 | 1.19 | 1,195.67 |
| Four factors | 253.67 | 38 | .96 | .93 | .96 | .07 (.06–.08) | 816.71* | 3 | 0.31 | 313.67 |
| Second order model — one factor | 305.63 | 40 | .94 | .92 | .95 | .08 (.07–.09) | 51.96* | 2 | 0.38 | 379.63 |
| Second order model — two factors | 248.61 | 41a | .95 | .94 | .96 | .07 (.06–.08) | 5.06 | 3 | 0.32 | 320.61 |
| Model with personality factorsb | 601.74 | 201 | .94 | .95 | .96 | .05 (.04–.05) | 0.75 | 749.75 |
Note. NFI = normed fit index; TLI = Tucker-Lewis index; CFI = comparative fit index; RMSEA = root-mean-square error of approximation; CI = confidence interval; ECVI = expected cross-validation index; AIC = Akaike information criterion.
In order for the model to be identified, paths from sexual health risk to risky sexual behavior and affiliation with risky partner were constrained to be equal, and paths from substance use to drinking behavior and drug use were constrained to be equal.
For this model to be identified, the correlations among the four personality variables and between the two higher order risk domains were fixed at the values identified in previous analyses. In addition, the paths to the two higher order risk domains were constrained to be equal for each personality construct.
p < .001.