Table 1 Baseline characteristics of participants by randomised group. Values are numbers (percentages) unless otherwise stated

Female gender

25 (46.3 %)

20 (41.7 %)

Mean age (SD)

44.9 (13.5)

47.7 (12.3)

Intellectual disabilities

Mild

37 (69.8 %)

21 (43.8 %)

Moderate

11 (20.8 %)

24 (50.0 %)

Severe

5 (9.43 %)

3 (6.3 %)

Type of support

Lives independently

3 (5.5)

2 (4.2)

Family carer

29 (53.7)

23 (47.9)

Paid carer

22 (40.7)

23 (47.9)

SIMD quintile

0–20 % most deprived

36 (66.7)

32 (66.7)

20–40 %

8 (14.8)

9 (18.8)

40–60 %

5 (9.3)

3 (6.3)

60–80 %

2 (3.7)

1 (1.9)

80–100 % least deprived

3 (5.6)

3 (6.3)

Diagnosis of epilepsy

3 (5.6 %)

7 (14.6 %)

Visual impairment

24 (44.4 %)

32 (66.7 %)

Hearing impairment

11 (20.4 %)

9 (18.8 %)

Mental ill-health

15 (27.8 %)

18 (37.5 %)

Problem behaviours

9 (20.0 %)

9 (19.2 %)

Weight status (BMI kg/m²)

Normal weight (18.5–24.9)

7 (13.5 %)

10 (20.8 %)

Overweight (25–29.9)

16 (30.8 %)

8 (16.7 %)

Obesity (30–39.9)

22 (42.3 %)

22 (45.8 %)

Morbid obesity (>40.0)

7 (13.5 %)

8 (16.7 %)