GCSE examination results (143 matched pairs)
| Index group | Comparison group | Comparison–index Difference between means (95% CI; p value) | |
|---|---|---|---|
| NS, non-significant. | |||
| Mean number of subjects examined | 7.91 | 8.15 | 0.24 (−0.22 to 1.69; NS) |
| Mean total points obtained | 32.33 | 36.78 | 4.45 (0.95 to 7.94; p=0.01) |
| Mean points per subject examined | 3.83 | 4.26 | 0.43 (0.12 to 0.73; p<0.01) |