Table 5.
Multinomial logistic regression of childhood variables predicting joint trajectory groups of bullying perpetration and narcissistic personality traits.
| Joint trajectory group contrasts | ||||||
|---|---|---|---|---|---|---|
| MB/HN vs. LB/LNb | MB/MN vs. LB/LNb | MB/HN vs. MB/MNc | ||||
| OR | 95% CI | OR | 95% CI | OR | 95% CI | |
| Demographic variables | ||||||
| Sex | 0.545 | [0.234, 1.269] | 0.949 | [0.461, 1.954] | 0.550 | [0.211, 1.433] |
| Race | 1.994 | [0.593, 6.707] | 1.937 | [0.718, 5.231] | 1.042 | [0.280, 3.882] |
| Household income | 1.456 | [0.852, 2.487] | 0.833 | [0.575, 1.209] | 1.785 | [0.980, 3.251] |
| Parent education | 1.204 | [0.758, 1.912] | 1.262 | [0.853, 1.868] | 0.885 | [0.520, 1.504] |
| Psychological and emotional variables | ||||||
| Hyperactivity | 1.686* | [1.067, 2.665] | 1.567* | [1.069, 2.297] | 1.090 | [0.639, 1.859] |
| Anxiety | 0.466* | [0.266, 0.818] | 0.831 | [0.555, 1.245] | 0.573 | [0.314, 1.048] |
| Frustration | 1.987* | [1.115, 3.540] | 1.382 | [0.883, 2.164] | 1.468 | [0.742, 2.901] |
| Empathic concern | 1.050 | [0.665, 1.658] | 0.684a | [0.479, 0.976] | 1.461 | [0.914, 2.335] |
MB/HN, moderate stable bullying/high increasing narcissistic personality traits; LB/LN, low decreasing bullying/low decreasing narcissistic personality traits; MB/MN, moderate stable bullying/moderate stable narcissistic personality traits; sex coded as 0 = boys and 1 = girls.
a
Non-significant after Benjamini–Hochberg correction.
b
LB/LN was comparison group in contrast.
c
MB/MN was comparison group in contrast.
*
p < 0.05.