Table 2.
Baseline characteristics of those who did and did not participate at Time 2 (T2, 1-year follow up), overall and by cohort
| All |
Cohort 1 |
Cohort 2 |
Cohort 3 |
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T2 participation status |
T2 participation status |
T2 participation status |
T2 participation status |
|||||||||||||
| Baseline characteristic, n: % | Did not participate | Participated | Did not participate | Participated | Did not participate | Participated | Did not participate | Participated | ||||||||
| (n = 618) | (n = 3735) | (n = 204) | (n = 1389) | (n = 206) | (n = 1215) | (n = 208) | (n = 1131) | |||||||||
| Girls | 274 | 44.2 | 1939 | 51.9 | 91 | 44.6 | 723 | 52.0 | 89 | 43.2 | 630 | 51.9 | 94 | 45.2 | 586 | 51.8 |
| Boys | 344 | 55.7 | 1796 | 48.1 | 113 | 55.4 | 666 | 48.0 | 117 | 56.8 | 585 | 48.2 | 114 | 54.8 | 545 | 48.2 |
| Eligible for free school meals | ||||||||||||||||
| Yes | 164 | 28.1 | 813 | 23.0 | 56 | 29.3 | 295 | 22.7 | 53 | 27.5 | 278 | 24.1 | 55 | 27.5 | 240 | 22.4 |
| No | 420 | 71.9 | 2716 | 23.0 | 135 | 70.7 | 1007 | 77.3 | 140 | 72.5 | 875 | 75.9 | 145 | 72.5 | 834 | 77.7 |
| Ethnic group | ||||||||||||||||
| Black African | 134 | 21.7 | 978 | 26.2 | 45 | 22.1 | 338 | 24.3 | 38 | 18.5 | 334 | 27.5 | 51 | 24.5 | 306 | 27.1 |
| Black Caribbean | 132 | 21.4 | 582 | 15.6 | 41 | 20.1 | 188 | 13.5 | 42 | 20.1 | 213 | 17.5 | 48 | 23.1 | 181 | 16.0 |
| Other Black | 20 | 3.2 | 110 | 3.0 | 8 | 3.9 | 44 | 3.2 | 8 | 3.9 | 39 | 3.2 | 4 | 1.9 | 27 | 2.4 |
| Mixed White and Black | 66 | 10.7 | 320 | 8.6 | 21 | 10.3 | 126 | 9.0 | 22 | 10.7 | 98 | 8.1 | 23 | 11.1 | 96 | 8.5 |
| Other Mixed | 35 | 5.7 | 208 | 5.6 | 11 | 5.4 | 80 | 5.8 | 10 | 4.9 | 73 | 6.0 | 14 | 6.7 | 55 | 4.9 |
| Indian, Pakistani, Bangladeshi | 19 | 3.1 | 161 | 4.31 | 8 | 3.9 | 70 | 5.0 | 6 | 2.9 | 51 | 4.2 | 5 | 2.4 | 40 | 3.5 |
| Latin American | 36 | 5.8 | 184 | 4.9 | 9 | 4.4 | 50 | 3.6 | 19 | 9.2 | 61 | 5.0 | 8 | 3.9 | 73 | 6.5 |
| White British | 60 | 9.7 | 579 | 15.5 | 22 | 10.8 | 250 | 18.0 | 13 | 6.3 | 162 | 13.3 | 25 | 12.0 | 167 | 14.8 |
| non-British White | 52 | 8.4 | 378 | 10.1 | 22 | 10.8 | 152 | 10.9 | 18 | 8.7 | 111 | 9.1 | 12 | 5.8 | 115 | 10.2 |
| Any other/Unknown | 64 | 10.4 | 235 | 6.3 | 17 | 8.3 | 91 | 6.6 | 29 | 14.1 | 73 | 6.0 | 18 | 8.7 | 71 | 6.3 |
| Mental health difficultiesa | ||||||||||||||||
| Yes | 133 | 22.2 | 668 | 18.3 | 51 | 25.5 | 254 | 18.7 | 42 | 21.5 | 217 | 18.3 | 40 | 19.7 | 197 | 17.8 |
| No | 465 | 77.8 | 2981 | 81.6 | 149 | 74.5 | 1106 | 81.3 | 153 | 78.5 | 967 | 81.7 | 163 | 80.3 | 908 | 82.2 |
| Continuous variables, mean: SD | ||||||||||||||||
| SDQ total difficulties scores | 12.8 | 5.8 | 12.1 | 5.8 | 13.6 | 6.1 | 12.0 | 5.9 | 13.0 | 5.7 | 12.1 | 5.7 | 12.0 | 5.6 | 12.1 | 5.7 |
| SDQ internalizing scores | 5.4 | 3.5 | 5.6 | 3.5 | 5.8 | 3.7 | 5.6 | 3.5 | 5.6 | 3.4 | 5.7 | 3.4 | 5.0 | 3.4 | 5.6 | 3.5 |
| SDQ externalizing scores | 7.4 | 3.8 | 6.5 | 3.6 | 7.8 | 3.9 | 6.4 | 3.7 | 7.5 | 3.8 | 6.5 | 3.5 | 7.0 | 3.8 | 6.6 | 3.5 |
SDQ, Strengths and Difficulties Questionnaire, a widely used and validated self-report measure of behavioural and emotional difficulties for 11–17 year olds (see Supplementary File, available as Supplementary data at IJE online for more information on measures).
a
SDQ total difficulties score >17. Percentages are column percentages and may not add up to 100 due to rounding.