Table 1.

Sample characteristics of mothers and children, focus group participants and their children.

	n	%	Median	Interquartile range
Overall
Mothers:
Age (decimal years)	536		36.4	32.25	40.08
Highest educational qualification at birth 1	502
Degree or equivalent	109	20.3
A Levels or equivalent	46	8.6
GCSEs or equivalent	267	49.8
NVQs or none	80	14.9
Missing	34	6.3
Children:
Age (decimal years)	536		7.4	7.17	7.75
Sex	536
Boys	271	50.6
Girls	265	49.4
BMI (kg/m2)	536		16.2	15.23	17.81
Weight status 2	536
Underweight	5	0.9
Healthy weight	404	75.4
Overweight and Obese	127	23.7
Focus Groups	6
Mothers: 3
Age (decimal years)	26		38.0	34.94	41.25
Highest educational qualification at birth	25
Degree or equivalent	11	42.3
A Levels or equivalent	2	7.7
GCSEs or equivalent	10	38.5
NVQs or none	2	7.7
Missing	1	3.8
Participant’s children:
Age (decimal years)	26		7.4	6.96	7.69
Sex	26
Boys	17	65.4
Girls	9	34.6
BMI (kg/m2)	26		16.1	15.03	18.21
Weight status1,2	26
Underweight	1	3.8
Healthy weight	18	69.2
Overweight and Obese	7	26.9

All data presented represent sample after one twin from each set was removed

¹Percentage column does not add up to 100 due to rounding

²Overweight and obesity were determined using international cut-off points, defined to pass through BMI of 25 and 30 kg/m² respectively at age 18¹³;Underweight was determined using international cut-off points, defined to pass through BMI of 17 kg/m² at age 18¹⁴

³One father participated in the focus groups

Abbreviation: BMI, body mass index; GCSE, General Certificate of Secondary Education; NVQ, National Vocational Qualification.