Demographics and characteristics
| Demographics and characteristics | ALwO | Caregivers | HCPs |
| Full UK sample, N | 416 | 498 | 250 |
| Matched pair (ALwO and caregiver), n (%) | 21 (5) | 21 (4) | N/A |
| Unmatched, n (%) | 395 (95) | 477 (96) | N/A |
| Country of residence, n (%) | |||
| England | 348 (84) | 425 (85) | 220 (88) |
| Northern Ireland | 12 (3) | 6 (1) | 9 (4) |
| Scotland | 31 (7) | 40 (8) | 13 (5) |
| Wales | 25 (6) | 27 (5) | 8 (3) |
| Age, years, mean (SD) | 15.3 (1.7) | 41.4 (8.3) | 44.9 (9.3) |
| Female, n (%) | 246 (59) | 288 (58) | 89 (36) |
| BMI classification of ALwO* | |||
| Obesity class I | 49% (n=204) | 55% (n=276) | 60% (SD: 21) |
| Obesity class II | 21% (n=86) | 22% (n=112) | 26% (SD: 14) |
| Obesity class III | 30% (n=126) | 22% (n=110) | 13% (SD: 11) |
| BMI classification of caregivers and HCPs,† n (%) | |||
| Underweight (<18.5 kg/m2) | N/A | 42 (8) | 6 (3) |
| Healthy weight (18.5–24.9 kg/m2) | N/A | 139 (28) | 123 (63) |
| Overweight (25.0–29.9 kg/m2) | N/A | 132 (27) | 54 (28) |
| Obesity class I–III (≥30.0 kg/m2) | N/A | 185 (37) | 13 (7) |
| Primary medical specialty, n (%) | |||
| Primary care practitioner | N/A | N/A | 150 (60) |
| General paediatrician | N/A | N/A | 40 (16) |
| Other specialty‡ | N/A | N/A | 60 (24) |
Table adapted from Halford et al.21
*BMI classification for ALwO participants, the ALwO of caregiver participants and the ALwO patients of HCP participants (obesity class I=BMI ≥95th percentile for age and sex; obesity class II=BMI≥120% of 95th percentile for age and sex; obesity class III=BMI≥140% of 95th percentile for age and sex). ALwO and caregiver data represent the proportion (number) of ALwO; HCP data represent the mean proportion (SD) of ALwO patients.
†BMI classification of participating caregivers/HCPs (n=196 for HCPs).
‡Includes nutrition specialists, paediatric endocrinologists, paediatric gastroenterologists, obstetricians and gynaecologists.
ALwO, adolescents living with obesity; BMI, body mass index; HCP, healthcare professional; N/A, not applicable; SD, standard deviation.