Table 5.
Test results sex differencesa | Dichotomous CAGE (0 vs. 1+ yes answers) | Trichotomous CAGE (0, 1, 2+ yes answers) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Age | χ2(3)b | p | MZ corr | DZ corr | th1c | Δ th1 femalesd | MZ corr | DZ corr | th1c | th2c | Δ th1 femalesd | Δ th2 femalesd |
15–17 | 2.54 | 0.469 | 0.62 | 0.53 | 0.97 | 0.39 | –e | –e | – | – | – | – |
18–20 | 2.14 | 0.545 | 0.47 | 0.33 | 0.47 | 0.52 | 0.47 | 0.31 | 0.47 | 1.15 | 0.52 | 0.46 |
21–23 | 2.63 | 0.453 | 0.50 | 0.14 | 0.33 | 0.62 | 0.49 | 0.14 | 0.33 | 1.07 | 0.62 | 0.49 |
24–26 | 2.17 | 0.538 | 0.50 | 0.19 | 0.31 | 0.68 | 0.45 | 0.14 | 0.31 | 0.99 | 0.68 | 0.57 |
27–29 | 3.89 | 0.274 | 0.51 | 0.14 | 0.45 | 0.50 | 0.47 | 0.17 | 0.44 | 1.11 | 0.50 | 0.40 |
30–32 | 4.52 | 0.210 | 0.41 | 0.26 | 0.50 | 0.49 | 0.40 | 0.31 | 0.49 | 1.11 | 0.49 | 0.41 |
aResults presented for testing sex differences in the correlations for the dichotomous CAGE
bTesting for the equality of the correlations over sex results in a test with three degrees of freedom with a critical χ2(3) value of 7.815 (α = .05)
cThreshold estimates
dDeviation from threshold for females
eNo polychoric correlations could be computed for the trichotomous CAGE in the 15–17 age group, since the frequency of 2+ yes answers was too low