Table 4 Secondary analysis—model specifications—SEND only samples years 8 and 9 cohorts (as at September 2020)
Dependent variable | Model | Intervention group indicator | Strata indicator | Covariates | Cohort (at 09/20) |
|---|---|---|---|---|---|
Attainment outcomes | |||||
GCSE Mathematics Mark (standardised) | Linear hierarchical | Yes | Yes | • KS2 mathematics raw score at pupil and school levels • Month of birth • Sex | Year 9 |
GCSE Mathematics Mark (standardised) | Linear hierarchical | Yes | Yes | • KS2 mathematics raw score at pupil and school levels • Month of birth • Sex | Year 8 |
GCSE English Language Grade 1-9 | Linear hierarchical | Yes | Yes | • KS2 reading raw score at pupil and school levels • Month of birth • Sex | Year 9 |
GCSE English Language Grade 1-9 | Linear hierarchical | Yes | Yes | • KS2 reading raw score at pupil and school levels • Month of birth • Sex | Year 8 |
GCSE Mathematics Grade 1-9 | Linear hierarchical | Yes | Yes | • KS2 mathematics raw score at pupil and school levels • Month of birth • Sex | Year 9 |
GCSE Mathematics Grade 1-9 | Linear hierarchical | Yes | Yes | • KS2 mathematics raw score at pupil and school levels • Month of birth • Sex | Year 8 |
Attendance and exclusion outcomes | |||||
Number of authorised absences in previous school year 2022/2023 | Count negative binomial hierarchical | Yes | Yes | • Number of authorised absences in school year 2019/2020 • Month of birth • Sex | Year 9 |
Number of authorised absences in previous school year 2023/2024 | Count negative binomial hierarchical | Yes | Yes | • Number of authorised absences in school year 2019/2020 • Month of birth • Sex | Year 8 |
At least one unauthorised absence in school year 2022/2023 | Binary logistic hierarchical | Yes | Yes | • Number of absences in school year 2019/2020 • Month of birth • Sex | Year 9 |
At least one unauthorised absence in school year 2023/2024 | Binary logistic hierarchical | Yes | Yes | • Number of absences in school year 2019/2020 • Month of birth • Sex | Year 8 |
At least one exclusion from school in school year 2022/2023 | Binary logistic hierarchical | Yes | Yes | • Number of absences in school year 2019/2020 • Month of birth • Sex | Year 9 |
At least one exclusion from school in school year 2023/2024 | Binary logistic hierarchical | Yes | Yes | • Number of absences in school year 2019/2020 • Month of birth • Sex | Year 8 |
Wellbeing outcomes | |||||
Total difficulties (SDQ) | Linear hierarchical | Yes | Yes | • Total difficulties baseline score • Month of birth • Sex | Year 9 |
Total difficulties (SDQ) | Linear hierarchical | Yes | Yes | • Total difficulties baseline score • Month of birth • Sex | Year 8 |