Table 5.
Associations between parental perception of their child’s weight and the child’s weight-related behaviours; children aged 6–17 years and their parents (n 47 417) from seven provinces in China, September–November 2013
| Parental perception | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | Underestimate | Accurate | Overestimate | Underestimate | Overestimate | |||||||
| Behaviour item | n | % | n | % | n | % | n | % | OR | 95 % CI | OR | 95 % CI |
| Underweight children (n 3144) | ||||||||||||
| Fruits (≥2 servings†/d) | 724 | 24·2* | – | 512 | 23·1 | 212 | 27·6 | – | 1·05 | 0·84, 1·32 | ||
| Vegetables (≥3 servings†/d) | 590 | 19·7 | – | 432 | 19·4 | 158 | 20·7 | – | 1·05 | 0·82, 1·34 | ||
| Meat products (≤1 serving†/d) | 2094 | 70·3** | – | 1517 | 68·5 | 577 | 75·5 | – | 1·03 | 0·82, 1·30 | ||
| Breakfast (=7 d/week) | 2572 | 84·8** | – | 1947 | 86·3 | 625 | 80·6 | – | 0·91 | 0·69, 1·19 | ||
| Soft drinks (=0 cup/week) | 1067 | 36·3 | – | 806 | 36·7 | 261 | 35·1 | – | 1·04 | 0·84, 1·29 | ||
| High-energy snacks (=0 d/week) | 740 | 24·6 | – | 550 | 24·5 | 190 | 24·9 | – | 1·13 | 0·90, 1·43 | ||
| Fried food (=0 time/week) | 1351 | 45·3** | – | 1039 | 46·8 | 312 | 41·1 | – | 0·94 | 0·77, 1·15 | ||
| Western fast foods (=0 time/week) | 1552 | 52·1** | – | 1122 | 50·5 | 430 | 56·8 | – | 1·04 | 0·85, 1·27 | ||
| MVPA (≥1 h/d) | 816 | 29·6 | – | 592 | 28·7 | 224 | 32·4 | – | 1·10 | 0·87, 1·38 | ||
| Screen time (≤2 h/d) | 2102 | 78·1** | – | 1599 | 79·3 | 503 | 74·4 | – | 0·89 | 0·68, 1·17 | ||
| Homework time (≤2 h/d) | 1963 | 66·5** | – | 1429 | 65·0 | 534 | 70·8 | – | 1·10 | 0·86, 1·39 | ||
| Healthy-weight children (n 32 564) | ||||||||||||
| Fruit (≥2 servings/d) | 7820 | 25·2** | 2102 | 23·4 | 4922 | 25·9 | 796 | 25·9 | 0·89** | 0·84, 0·95 | 0·91 | 0·83, 1·00 |
| Vegetable (≥3 servings/d) | 5984 | 19·3** | 1641 | 18·2 | 3678 | 19·4 | 665 | 21·5 | 0·97 | 0·90, 1·03 | 1·01 | 0·92, 1·12 |
| Meat products (≤1 servings/d) | 22 676 | 73·2** | 6421 | 71·5 | 13 914 | 73·5 | 2341 | 76·3 | 0·94* | 0·88, 1·00 | 0·98 | 0·89, 1·08 |
| Breakfast (=7 d/week) | 26 552 | 84·6** | 7859 | 86·3 | 16 259 | 84·7 | 2434 | 78·4 | 0·96 | 0·89, 1·04 | 0·83** | 0·75, 0·92 |
| Soft drinks (=0 cup/week) | 10 385 | 34·1 | 2992 | 33·9 | 6424 | 34·4 | 969 | 32·5 | 0·95 | 0·90, 1·00 | 0·93 | 0·85, 1·01 |
| High-energy snacks (=0 d/week) | 7785 | 25·0* | 2316 | 25·6 | 4754 | 24·9 | 715 | 23·3 | 1·00 | 0·94, 1·06 | 0·93 | 0·84, 1·02 |
| Fried food (=0 time/week) | 13 391 | 43·1** | 3967 | 44·0 | 8261 | 43·5 | 1163 | 37·8 | 0·96 | 0·91, 1·01 | 0·89** | 0·82, 0·97 |
| Western fast foods (=0 time/week) | 16 041 | 51·7** | 4564 | 50·7 | 9799 | 51·7 | 1678 | 54·8 | 0·96 | 0·91, 1·01 | 0·95 | 0·87, 1·03 |
| MVPA (≥1 h/d) | 8809 | 30·8* | 2441 | 29·5 | 5503 | 31·4 | 865 | 31·0 | 0·89** | 0·84, 0·95 | 0·96 | 0·88, 1·06 |
| Screen time (≤2 h/d) | 21 471 | 77·1** | 6167 | 77·0 | 13 382 | 77·9 | 1922 | 72·2 | 0·95 | 0·89, 1·02 | 0·85** | 0·77, 0·94 |
| Homework time (≤2 h/d) | 20 321 | 66·6** | 6151 | 69·8 | 12 302 | 65·8 | 1868 | 61·9 | 1·00 | 0·94, 1·06 | 0·87** | 0·79, 0·96 |
| Overweight children (n 11 709) | ||||||||||||
| Fruits (≥2 servings/d) | 3022 | 27·1* | 1348 | 28·3 | 1674 | 26·2 | – | 1·06 | 0·97, 1·17 | – | ||
| Vegetables (≥3 servings/d) | 2297 | 20·6 | 981 | 20·6 | 1316 | 20·5 | – | 0·97 | 0·88, 1·08 | – | ||
| Meat products (≤1 servings/d) | 8171 | 73·5** | 3596 | 76·0 | 4575 | 71·6 | – | 1·17** | 1·06, 1·29 | – | ||
| Breakfast (=7 d/week) | 9633 | 85·5 | 4128 | 86·1 | 5505 | 85·0 | – | 1·06 | 0·94, 1·20 | – | ||
| Soft drinks (=0 cup/week) | 3588 | 32·8** | 1648 | 35·4 | 1940 | 30·8 | – | 1·11* | 1·01, 1·21 | – | ||
| High-energy snacks (=0 d/week) | 3052 | 27·3 | 1282 | 27·0 | 1770 | 27·5 | – | 0·95 | 0·86, 1·04 | – | ||
| Fried food (=0 time/week) | 4739 | 42·4 | 1983 | 41·7 | 2756 | 42·9 | – | 0·97 | 0·89, 1·06 | – | ||
| Western fast foods (=0 time/week) | 5823 | 52·2 | 2448 | 51·7 | 3375 | 52·6 | – | 0·91* | 0·84, 0·99 | – | ||
| MVPA (≥1 h/d) | 3390 | 32·8* | 1379 | 31·5 | 2011 | 33·8 | – | 1·00 | 0·91, 1·10 | – | ||
| Screen time (≤2 h/d) | 7910 | 77·3** | 3425 | 78·6 | 4485 | 76·4 | – | 1·18** | 1·06, 1·31 | – | ||
| Homework time (≤2 h/d) | 7433 | 67·4** | 3311 | 70·5 | 4122 | 65·1 | – | 1·06 | 0·96, 1·16 | – | ||
MVPA, moderate-to-vigorous physical activity.
Differences in behaviour items between parental perception groups were evaluated using Pearson χ 2 tests.
OR and 95 % CI were derived from binary logistic regression analysis, in which the dependent variable is the single behaviour item. Both underestimation and overestimation groups are compared with the accurate estimation group, adjusting for age, gender, region and school.
* P<0·05, ** P<0·01.
A serving of fruit or vegetable is equivalent to 100 g, whereas a serving of meat product is equivalent to 75 g.