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Table 2 Contingency table of 2 year and 4.5 year behavioural categorisations for each SDQ measure

From: Persistence and change in behavioural problems during early childhood

4.5 years

  

Total difficulties

Emotional symptoms

Peer problems

Hyperactivity-Inattention

Conduct problems

Normal/ Borderline

n (%)

Abnormal

n (%)

Normal/ Borderline

n (%)

Abnormal

n (%)

Normal/ Borderline

n (%)

Abnormal

n (%)

Normal/ Borderline

n (%)

Abnormal

n (%)

Normal/ Borderline

n (%)

Abnormal

n (%)

2 years

Normal/Borderline

4899 (92.0%)

428 (8.0%)

5078 (92.4%)

419 (7.6%)

4748 (89.1%)

582 (10.9%)

4834 (89.1%)

594 (10.9%)

4718 (91.1%)

459 (8.9%)

Abnormal

323 (57.9%)

235 (42.1%)

243 (61.2%)

154 (38.8%)

368 (65.6%)

193 (34.4%)

289 (62.2%)

176 (37.8%)

519 (72.5%)

197 (27.5%)