Table 1.
Characteristics of ALSPAC participants who attended the Focus@24+ clinic
| All clinic attendees (n=4021) | ||
|---|---|---|
| Sex | ||
| Male | 1507 (37·5%) | |
| Female | 2514 (62·5%) | |
| Age, years | 24·0 (23·0–25·0) | |
| Parental social class*† | ||
| IV–V (partly skilled and unskilled occupation) | 111 (3·2%) | |
| III (non-manual and manual occupation) | 1100 (31·7%) | |
| II (managerial and technical occupation) | 1587 (45·7%) | |
| I (professional occupation) | 673 (19·4%) | |
| Parental income*† | ||
| Lowest 20% | 428 (13·0%) | |
| Second quintile | 571 (17·3%) | |
| Third quintile | 663 (20·1%) | |
| Fourth quintile | 769 (23·3%) | |
| Highest 20% | 869 (26·3%) | |
| Maternal education (highest level achieved)† | ||
| Lower than O-levels | 615 (17·0%) | |
| O-levels | 1223 (33·9%) | |
| Higher education | 1775 (49·1%) | |
| Smoker† | ||
| Yes | 1170 (30·2%) | |
| No | 2709 (69·8%) | |
| Alcohol consumption | ||
| Normal (AUDIT-C score <5) | 1813 (45·1%) | |
| Hazardous (AUDIT-C score ≥5) | 1697 (42·2%) | |
| Harmful (alcohol use disorder) | 511 (12·7%) | |
| BMI† | ||
| Underweight (<18·5 kg/m2) | 119 (3·0%) | |
| Normal weight (18·5 to <25 kg/m2) | 2323 (58·4%) | |
| Overweight (25 to <30 kg/m2) | 1002 (25·2%) | |
| Obese (≥30 kg/m2) | 533 (13·4%) | |
| Waist-to-height ratio† | ||
| Normal adiposity (<0·5) | 2856 (72·0%) | |
| Increased adiposity (≥0·5) | 1108 (28·0%) | |
Data are n (% of available data), median (IQR), or mean (SD). ALSPAC=Avon Longitudinal Study of Parents and Children. AUDIT-C=Alcohol Use Disorder Identification Test-C. BMI=body-mass index.
†
Missing data: parental social class, n=550; parental income, n=721; maternal education, n=408; smoking status, n=142; BMI, n=44; waist-to-height ratio, n=57.