Table 4.
A comparison of socio-demographic characteristics between those children who did and did not participate in the 16–18-year data collection assessments
| Enrolled in ALSPACa | Recently participated | Odds ratio |
|||
|---|---|---|---|---|---|
| Characteristic | Category | n/n (%) | n/n (%) | OR (95% CI) | P > chi2‡ |
| Child sex | Female | 5470/11 008 (49.69) | 3181/5535 (57.47) | 1.88 (1.74–2.03) | <0.001 |
| Child ethnicity | White | 10 505/10 933 (96.09) | 5322/5508 (96.62) | 1.34 (1.10–1.62) | 0.004 |
| Low household income | FSMb | 682/10 959 (6.22) | 240/5519 (4.35) | 0.51 (0.44–0.60) | <0.001 |
aAll pupils, from English GMEs, who are from families that have enrolled in ALSPAC by completing an ALSPAC questionnaire or clinical assessment.
bEligible for ‘free school meals’ (FSM), indicating a joint parental income of ≤£16 000.7 ‡Chi-squared test for homogeneity (equal odds).