Population descriptor | No head injury (n=90 371) | Head injury (n=290) |
---|---|---|
Gender* | ||
n (%) | ||
Male | 46 348 (51.3) | 162 (55.9) |
Female | 44 019 (48.7) | 128 (44.1) |
Townsend deprivation index quintile† | ||
n (%) | ||
1 (least deprived) (reference) | 17 395 (19.4) | 47 (16.4) |
2 | 16 863 (18.8) | 43 (15.0) |
3 | 17 301 (19.3) | 56 (19.5) |
4 | 17 909 (19.9) | 65 (22.6) |
5 (most deprived) | 20 339 (22.6) | 76 (26.5) |
Apgar score‡ | ||
Median (IQR) | 9 (5–9) | 9 (7–9) |
Gestational age§ | ||
Mean (SD) weeks | 39.3 (2.1) | 39.2 (2.1) |
Birth weight¶ | ||
Mean (SD) kg | 3.4 (0.6) | 3.3 (0.6) |
Age at KS1 assessment | ||
Mean (SD) years | 7.3 (0.3) | 7.3 (0.3) |
*Data missing for n=4, 0.05%.
†Data missing for n=567, 0.6%.
‡Data missing for 40 006, 44.1%.
§Data missing for 15 518, 17.1%).
¶Data missing for n=10 129, 11.2%.