Table 2.
Mean Values (Standard Deviation) of SEA Scores and IQ by Achievement of Adequate Final-Examination Results at Age 16 Years, Avon Longitudinal Study of Parents and Children, Bristol, United Kingdom, 1990–Present
| Adequate Final-Examination Resultsa |
P Valueb | ||||
|---|---|---|---|---|---|
| Yes (n = 3,212) (44%) |
No (n = 4,127) (56%) |
||||
| Mean (SD) | No. | Mean (SD) | No. | ||
| SEA scores | 14.24 (2.75) | 2,926 | 11.76 (3.01) | 2,431 | <0.001 |
| IQ | 109.65 (14.03) | 3,566 | 94.28 (15.31) | 2,172 | <0.001 |
Abbreviations: IQ, intelligence quotient; SD, standard deviation; SEA, School Entry Assessment.
a “Adequate final-examination results” indicates a passing grade on 5 or more General Certificate of Secondary Education examinations, typically taken by students in the United Kingdom at age 16 years.
b P value based on 2-tailed Student's t test.