Table 2.
Prevalence of children in each trajectory class according to bedroom screen access, mealtime setting, mealtime interaction and covariates.
| All (n = 2810) | Trajectory class | |||||||
|---|---|---|---|---|---|---|---|---|
| High/Increasing Obesity (n = 112) | High/Stable Overweight (n = 167) | Increasing Overweight (n = 333) | Decreasing Overweight (n = 267) | Low Risk (n = 1 931) | Differencea | |||
| Primary exposures | ||||||||
| Bedroom screen access trajectory (46–122 months) | Late increase | 28.1 | 10.0 | 22.4 | 19.6 | 34.2 | 30.6 | <0.001 |
| Early increase | 26.9 | 32.2 | 32.9 | 28.4 | 24.2 | 26.1 | ||
| High stable | 45.0 | 57.8 | 44.7 | 52.0 | 41.6 | 43.4 | ||
| Mealtime setting (58 and 122 months) | Informal | 40.9 | 70.7 | 44.6 | 49.2 | 40.6 | 36.9 | <0.001 |
| Intermediate | 29.8 | 20.4 | 28.2 | 31.4 | 25.7 | 30.9 | ||
| Formal | 29.3 | 8.8 | 27.2 | 19.5 | 33.7 | 32.2 | ||
| Mealtime interaction (58 and 122 months) | Negative | 37.1 | 39.9 | 39.3 | 30.8 | 34.5 | 38.2 | 0.358 |
| Intermediate | 31.2 | 28.3 | 26.0 | 34.1 | 30.5 | 31.4 | ||
| Positive | 31.7 | 31.8 | 34.7 | 35.1 | 35.1 | 30.4 | ||
| Covariates | ||||||||
| Child gender | Male | 51.8 | 44.8 | 39.4 | 44.2 | 51.5 | 54.7 | 0.001 |
| Mother's BMI | child 70 months | 27.09 (0.16) | 32.42 (0.80) | 27.94 (0.54) | 28.82 (0.35) | 27.32 (0.52) | 26.36 (0.16) | <0.001 |
| Firstborn | Yes | 50.2 | 51.6 | 52.8 | 43.1 | 58.1 | 50.2 | 0.043 |
| Teenage mother | Yes | 16.8 | 24.3 | 18.7 | 18.5 | 14.9 | 16.0 | 0.443 |
| Mother's ethnicity | Minority | 3.3 | 4.8 | 2.5 | 1.8 | 1.1 | 3.8 | 0.183 |
| Mother's education | None | 7.8 | 16.9 | 9.0 | 11.5 | 7.5 | 6.5 | 0.022 |
| Standard grades—lower | 5.6 | 6.8 | 4.6 | 6.8 | 4.8 | 5.5 | ||
| Standard grades—upper | 21.9 | 20.4 | 19.5 | 24.6 | 19.8 | 22.0 | ||
| Highers | 33.3 | 39.8 | 39.3 | 33.4 | 35.0 | 32.1 | ||
| Degree | 31.4 | 16.2 | 27.6 | 23.8 | 32.9 | 33.9 | ||
| Mother's mental health (child age 10, 22 and 34 months) | −0.10 (0.03) | −0.45 (0.16) | −0.19 (0.12) | −0.02 (0.07) | 0.01 (0.07) | −0.10 (0.03) | 0.009 | |
| Smoked when pregnant | 24.2 | 35.6 | 31.8 | 26.3 | 22.3 | 22.6 | 0.02 | |
| Poverty score (child age 10, 22 and 34 months) | 2.44 (0.15) | 4.03 (0.50) | 2.63 (0.43) | 2.82 (0.31) | 1.98 (0.31) | 2.30 (0.17) | 0.001 | |
| Lone parent score (child age 10, 22 and 34 months) | 0.57 (0.03) | 0.96 (0.14) | 0.63 (0.11) | 0.60 (0.08) | 0.56 (0.11) | 0.53 (0.04) | 0.02 | |
| Large family (child age 10 months) | 18.4 | 15.5 | 24.8 | 18.2 | 16.0 | 18.4 | 0.325 | |
| Breastfeeding duration (months) | 2.76 (0.11) | 1.65 (0.30) | 2.66 (0.33) | 2.03 (0.17) | 2.79 (0.23) | 2.97 (0.13) | <0.001 | |
| First solids (child age in months) | 4.52 (0.03) | 4.20 (0.19) | 4.51 (0.15) | 4.49 (0.09) | 4.28 (0.08) | 4.58 (0.04) | 0.032 | |
| Child picky diet (age 22 months) | 0.01 (0.02) | −0.27 (0.09) | −0.14 (0.08) | −0.07 (0.05) | 0.04 (0.07) | 0.06 (0.02) | 0.005 | |
| Child diet quality (age 22 & 58 months) | −0.07 (0.01) | −0.25 (0.05) | −0.05 (0.04) | −0.13 (0.03) | −0.01 (0.05) | −0.06 (0.02) | 0.001 | |
| Household organisation (child age 58 months) | 1.59 (0.02) | 1.45 (0.09) | 1.62 (0.06) | 1.62 (0.04) | 1.73 (0.05) | 1.58 (0.02) | 0.062 | |
| Irregular bedtime (child age 58 and 60 months) | 0.05 (0.03) | 0.35 (0.13) | 0.09 (0.11) | 0.07 (0.07) | −0.05 (0.06) | 0.03 (0.03) | 0.031 | |
| Child skips breakfast (age 58 months) | 5.0 | 12.5 | 6.7 | 6.5 | 3.8 | 4.3 | 0.004 | |
| Screen time trajectory (46–122 months) | Low | 22.9 | 15.5 | 18.5 | 15.5 | 22.8 | 25.2 | 0.017 |
| Medium | 58.5 | 65.0 | 59.6 | 60.2 | 59.6 | 57.4 | ||
| High | 18.6 | 19.5 | 21.9 | 24.3 | 17.6 | 17.4 | ||
| Child physical activity (hours/day, average ages 58 and 70 months) | 1.31 (0.02) | 1.31 (0.06) | 1.30 (0.08) | 1.41 (0.04) | 1.32 (0.05) | 1.30 (0.02) | 0.139 | |
| Child sleep (mean hours/day, average ages 70 and 94 months) | 10.60 (0.02) | 10.36 (0.11) | 10.55 (0.09) | 10.51 (0.05) | 10.60 (0.06) | 10.64 (0.02) | 0.032 | |
The table shows unadjusted associations. For each class, figures indicate either the percentage of individuals the class with a given characteristic, or their mean score for the given characteristic
aDifference tested across all trajectory classes