Table 3.
Genetic model fitting results
| Model | −2LL | df | c.t.m. | χ 2 | Δdf | p | ||
|---|---|---|---|---|---|---|---|---|
| Optimism_6 items | 1 | Saturated | 30,535.02 | 6,040 | ||||
| 2 | ACE with sex differences | 30,535.46 | 6,041 | 1 | .44 | 1 | .51 | |
| 3 | ADE with sex differences | 30,535.50 | 6,041 | 1 | .48 | 1 | .49 | |
| 4 | ACE no sex differences | 30,541.17 | 6,044 | 2 | 5.71 | 3 | .13 | |
| 5 | ADE no sex differences | 30,541.14 | 6,044 | 3 | 5.65 | 3 | .13 | |
| 6 | AE no sex differences | 30,541.17 | 6,045 | 4 | .0 | 1 | 1.0 | |
| 7 | AE no sex differences | 30,541.17 | 6,045 | 5 | .03 | 1 | 1.0 | |
| Optimism_3 items | 1 | Saturated | 23,889.97 | 6,040 | ||||
| 2 | ACE with sex differences | 23,892.8 | 6,041 | 1 | 2.83 | 1 | .09 | |
| 3 | ADE with sex differences | 23,893.99 | 6,041 | 1 | 4.02 | 1 | .05 | |
| 4 | ACE no sex differences | 23,900.47 | 6,044 | 2 | 7.67 | 3 | .05 | |
| 5 | ADE no sex differences | 23,900.48 | 6,044 | 3 | 6.49 | 3 | .09 | |
| 6 | AE no sex differences | 23,900.48 | 6,045 | 4 | .01 | 1 | 1.0 | |
| 7 | AE no sex differences | 23,900.48 | 6,045 | 5 | .0 | 1 | 1.0 | |
| Pessimism_3 items | 1 | Saturated | 25,471.47 | 6,040 | ||||
| 2 | ACE sex differences | 25,472.14 | 6,041 | 1 | .67 | 1 | .41 | |
| 3 | ADE with sex differences | 25,472.01 | 6,041 | 1 | .54 | 1 | .46 | |
| 4 | ACE no sex differences | 25,474.97 | 6,044 | 2 | 2.83 | 3 | .42 | |
| 5 | ADE no sex differences | 25,474.84 | 6,044 | 3 | 2.83 | 3 | .42 | |
| 6 | AE no sex differences | 25,474.97 | 6,045 | 4 | .0 | 1 | 1.0 | |
| 7 | AE no sex differences | 25,474.97 | 6,045 | 5 | .13 | 1 | 1.0 | |
c.t.m compared to model