Demographic characteristics
| Characteristic | Interview | Questionnaire | ||
| N | % | n | % | |
| Age (years) | ||||
| 16–24 | 2 | 12.5 | 13 | 8.23 |
| 25–30 | 5 | 31.25 | 34 | 21.52 |
| 31–35 | 5 | 31.25 | 75 | 47.47 |
| 36–40 | 4 | 25 | 30 | 18.99 |
| 41–45 | 0 | 0 | 5 | 3.16 |
| 46+ | 0 | 0 | 1 | 0.63 |
| Age of youngest child (months) | ||||
| 0–3 | 1 | 6.25 | 36 | 22.78 |
| 4–6 | 8 | 50 | 52 | 32.91 |
| 7–9 | 5 | 31.25 | 50 | 31.65 |
| 10–12 | 2 | 12.5 | 20 | 12.66 |
| No of children | ||||
| 1 | 14 | 87.5 | 102 | 64.56 |
| 2 | 2 | 12.5 | 47 | 29.74 |
| 3 | 0 | 0 | 6 | 3.80 |
| 4 | 0 | 0 | 1 | 0.63 |
| 5+ | 0 | 0 | 2 | 1.27 |
| Highest education | ||||
| Some secondary school | 0 | 0 | 2 | 1.27 |
| GCSE* | 0 | 0 | 10 | 6.33 |
| A level/equivalent | 8 | 50 | 23 | 14.56 |
| University/college degree | 8 | 50 | 123 | 77.85 |
| Employment status | ||||
| On maternity leave | 12 | 75 | 122 | 77.21 |
| Part time employment | 2 | 12.5 | 10 | 6.33 |
| Full time employment | 0 | 0 | 12 | 7.59 |
| Unemployed | 2 | 12.5 | 14 | 8.86 |
| Marital status | ||||
| Married | 7 | 43.75 | 111 | 70.25 |
| Cohabiting | 9 | 56.25 | 39 | 24.68 |
| Single | 0 | 0 | 6 | 3.80 |
| Separated | 0 | 0 | 2 | 1.27 |
| Physical activity levels | ||||
| Low | 2 | 12.5 | 31 | 19.6 |
| Moderate | 8 | 50 | 62 | 39.2 |
| High | 3 | 18.75 | 28 | 17.7 |
| Excluded † | 3 | 18.75 | 37 | 23.4 |
*UK qualification taken in UK schools at age 16
†Participants excluded due to missing data as advised in IPAQ data processing rules.