Table 1.
SC1–2 (%) | SC3–4 (%) | SC5–6 (%) | n * | |
---|---|---|---|---|
10–11 years | 41 | 44 | 15 | 644 |
12–14 years | 41 | 44 | 14 | 2557 |
15–17 years | 46 | 40 | 14 | 1953 |
SC, social class.
The number of boys is less than the sample used in the present paper due to missing or incomplete social class data.