Table 1.
Common and uncommon problem behavior at 14 months
| % With score 1 (sometimes) | % With score 2 (often) | % With score 1 or 2 | |
|---|---|---|---|
| Common problem behavior | |||
| Quickly shifts from one thing to othera | 61.9 | 26.0 | 87.9 |
| Angry moodsa | 63.5 | 9.6 | 73.1 |
| Demands must be met | 56.8 | 14.1 | 70.9 |
| Can’t stand waiting, wants everything now | 51.1 | 16.2 | 67.3 |
| Uses toys for fantasy playa | 35.2 | 29.8 | 65.0 |
| Wants a lot of attention | 50.3 | 14.4 | 64.7 |
| Accident prone | 56.4 | 6.4 | 62.8 |
| Stays close to parent | 54.0 | 4.5 | 58.5 |
| Easily upset | 46.3 | 7.5 | 53.8 |
| Doesn’t sit still during storya | 39.4 | 14.0 | 53.4 |
| Won’t share toys or other thingsa | 46.1 | 5.9 | 52.0 |
| Doesn’t keep trying | 46.7 | 5.1 | 51.8 |
| Can’t sit still, restless, hyperactivea | 40.0 | 11.0 | 51.0 |
| Uncommon problem behavior | |||
| Fails to follow with eyes | 8.0 | 1.4 | 9.4 |
| Doesn’t show interest in new objects | 7.1 | 0.6 | 7.7 |
| Doesn’t make happy noises | 6.7 | 0.8 | 7.5 |
| Doesn’t make noises spontaneously | 5.8 | 1.1 | 6.9 |
| Has less fun than others | 4.5 | 1.5 | 6.0 |
| Doesn’t react at calling namea | 5.3 | 0.6 | 5.9 |
| Seems unhappy without good reason | 4.9 | 0.7 | 5.6 |
| Doesn’t imitate simple gesturesa | 4.3 | 0.9 | 5.2 |
Note: Common is defined as >50% with score 1 or 2. Uncommon is defined as <10% with score 1 or 2. Please note further that items covering lack of competences were recoded in such way that a score of 2 represented the complete presence of an unwanted behavior or the complete absence of a wanted behavior. This explains why all items have the same-sign factor loadings
a Significantly more boys (P < 0.001)