Birth weight (g) | | | |
Mean (SD) | 1048 (209) | 1051 (229) | |
<750 | 9 (5) | 1 (3) | 0.46 |
750–999 | 65 (36) | 18 (46) | |
≥1000 | 105 (59) | 20 (51) | |
Gestational age (weeks) | | | |
Mean (SD) | 27.1 (1.1) | 26.9 (1.1) | |
26 or less | 48 (27) | 13 (33) | 0.46 |
27 | 47 (26) | 12 (31) | |
28 | 84 (47) | 14 (36) | |
Sex | | | |
Male | 85 (47) | 20 (51) | 0.80 |
Female | 94 (53) | 19 (49) | |
Area of residence | | | |
Northern region | 57 (32) | 1 (3) | <0.001 |
Scotland | 80 (45) | 24 (62) | |
Oxford | 42 (23) | 14 (36) | |
Social Class when last seen (Oxford and Scotland only) | n=122 | n=38 | |
Professional/semiprofessional | 29 (24) | 5 (13) | 0.021 |
Skilled | 46 (38) | 7 (18) | |
Semiskilled/unskilled | 15 (12) | 11 (29) | |
Armed forces | 6 (5) | 3 (8) | |
No paid employment | 26 (21) | 12 (32) | |
Impairment level when last seen* (Oxford and Scotland only) | n=122 | n=38 | |
Normal or impairment without disability | 70 (60) | 18 (55) | 0.62 |
Mild disability | 31 (26) | 8 (24) | |
Moderate to severe disability | 16 (14) | 7 (21) | |