Table 1 Description of the study sample for each developmental domain
From: Trajectories of socioeconomic inequality in early child development: a cohort analysis
|  | Language skillsa n (% of total) | Internalizing and externalizing problemsb n (% of total) |
|---|---|---|
N | 4672 | 4795 |
high SEP | 2969 (63.5%) | 3070 (64%) |
middle SEP | 1243 (26.6%) | 1275 (26.6%) |
low SEP | 460 (9.8%) | 450 (9.4%) |
Girls | 2359 (50.5%) | 2422 (50.5%) |