Table 1

Descriptive characteristics of the sample based on reported measures unless otherwise stated: number (weighted %) of singletons at age 7 for all children with reliable accelerometry data

Reliable accelerometry data sample (6497 children)
Child's general characteristics
Gender
 Boys3176 (50.9)
 Girls3321 (49.1)
Child's ethnic group
 Caucasian5710 (85.2)
 Mixed168 (3.2)
 Indian139 (2.0)
 Pakistani177 (3.8)
 Bangladeshi70 (1.3)
 African-American142 (2.8)
 Other ethnic group90 (1.6)
Child's BMI
 Optimal5310 (80.0)
 Overweight827 (14.0)
 Obese283 (5.9)
Home
Physical environment
Type of accommodation
 House or bungalow5838 (86.4)
 Flat, studio, bedsit or other656 (13.6)
Child has a TV in his/her bedroom3046 (52.7)
Access to garden6179 (92.5)
Cars in use
 None579 (14.3)
 One2304 (37.1)
 More than one3604 (48.6)
Socioeconomic environment
Housing tenure
 Own/mortgage4873 (62.5)
 Other1614 (37.5)
Number of children in the household
 Only child726 (12.4)
 At least one other child5771 (87.6)
Lone mother961 (22.0)
Maternal socioeconomic class
 Managerial and professional occupations2189 (34.1)
 Intermediate occupations1201 (19.5)
 Routine and manual occupations2582 (42.5)
 Never worked and long-term unemployed268 (3.9)
Maternal education
 At or above O-level5015 (69.0)
 Below O-level1482 (31.0)
Poverty (<60% median income)1462 (30.2)
Neighbourhood
Physical environment
Access to play areas5824 (90.4)
Good area to bring up children
 Excellent/good4806 (71.8)
 Average1180 (21.8)
 Poor/very poor316 (6.4)
Parental perception of safety
 Very safe/fairly safe5608 (86.4)
 Neither safe nor unsafe439 (8.3)
 Fairly unsafe/very unsafe259 (5.3)
Urban/rural (objective)
 Urban (>10k)12 203 (86.8)
 Rural1830 (13.2)
Socioeconomic environment (objective)
Index of multiple deprivation England
  Least deprived912 (20.1)
  Second821 (19.3)
  Third830 (20.5)
  Fourth789 (18.4)
  Most deprived848 (21.8)
Index of multiple deprivation Wales
  Least deprived243 (27.4)
  Second154 (17.8)
  Third126 (12.4)
  Fourth193 (19.5)
  Most deprived183 (23.0)
Index of multiple deprivation Scotland
  Least deprived215 (21.1)
  Second163 (19.8)
  Third169 (22.2)
  Fourth122 (19.8)
  Most deprived 92 (17.2)
Index of multiple deprivation Northern Ireland
  Least deprived129 (18.1)
  Second117 (18.5)
  Third130 (19.0)
  Fourth140 (20.8)
  Most deprived120 (23.6)
  • Missing data: child's ethnic group, 1; child's BMI (based on measured height and weight and classified according to the International Obesity Task Force; IOTF), 77; type of accommodation, 3; child has TV in his/her bedroom, 7; access to gardens, 3; household cars in use, 10; housing tenure, 10; maternal education, 242; access to play areas, 12; good area to bring up children, 195; parental perception of safety, 191; urban/rural, 1 (England) and Index of Multiple Deprivation, 1 (England).

  • BMI, body mass index; TV, television.