Table 1. Descriptive statistics of MEND 7–13 participants.
| Variables |
BMI sample (N=9563) |
|
|---|---|---|
| %/mean | s.d. for means | |
| Outcomes at baseline | ||
| % Obese (BMI exceeds 98th centile) | 84.3 | |
| BMI baseline in kg m−2 (mean, s.d.) | 26.8 | 4.65 |
| zBMI baseline (mean, s.d.) | 2.7 | 0.72 |
| Self-esteem baseline (mean, s.d.)a | 16.8 | 6.85 |
| SDQ baseline (mean, s.d.)b | 13.1 | 6.87 |
| Covariates | ||
| Age in years (mean, s.d.) | 10.4 | 1.75 |
| Sex (girls:boys, %) | 55.3:44.7 | |
| Ethnicity (%) | ||
| White | 77.3 | |
| Asian | 12.5 | |
| Black | 6.2 | |
| Other | 3.9 | |
| Family structure (couple:lone, %) | 67.2:32.8 | |
| Housing tenure (%) | ||
| Owner occupied | 56.4 | |
| Social rented | 29.4 | |
| Private rented | 14.2 | |
| Employment status (employed:unemployed, %) | 76.7:23.3 | |
| Neighbourhood deprivation, IDACI 2007 (mean, s.d.) | 0.26 | 0.19 |
| Urban/rural (%) | ||
| Urban | 88.5 | |
| Towns | 6.9 | |
| Villages | 4.6 | |
| Built environment (mean, s.d.) | 0.18 | 0.93 |
| Density of local fast food outlets per LSOA | ||
| None | 46.3 | |
| 1–2 Unhealthy outlets | 33.2 | |
| 3–4 Unhealthy outlets | 12.4 | |
| 5+ Unhealthy outlets | 8.1 | |
| Number of programmes per PMc (mean, s.d.) | 5.8 | 5.72 |
| Programme group size (mean, s.d.) | 8.6 | 3.09 |
| Sessions attended (%) | ||
| Non-completers | 2.1 | |
| Partial completers | 25.8 | |
| Completers | 72.1 | |
| Height rounding (not rounded:rounded, %) | 3.7:96.3 | |
| Weight rounding (not rounded:rounded, %) | 41.3:58.7 | |
Abbreviations: BMI, body mass index; IDACI, Income Deprivation Affecting Children Index; LSOA, Lower Super Output Area; ref., reference category; SDQ, Strengths and Difficulties questionnaire; zBMI, BMI-derived z-score.
a
Calculated from imputed self-esteem data set (N=5078).
b
Calculated from imputed SDQ data set (N=8127).
c
PM, programme manager.