Table 2.
Comparisons of self-reported and directly measured weight among 11- to 15 year old adolescents by weighing history, recall ability for weight and response capability for weight
| |
N |
Weight/self-reported (kg) |
Weight/direct (kg) |
Difference for weight (kg) |
|||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | 95% CI | P value* | ||
|
Boys |
839 |
50.98 |
13.14 |
51.79 |
13.29 |
−0.81 |
4.95 |
−1.15; -0.81 |
<0.0001 |
|
Girls |
845 |
47.63 |
10.07 |
49.45 |
10.60 |
−1.82 |
3.15 |
−2.03; -1.61 |
<0.0001 |
|
Weighing history |
|
|
|
|
|
|
|
|
|
|
Boys |
|
|
|
|
|
|
|
|
|
| Weighed recently |
572 |
50.74 |
13.12 |
51.64 |
13.30 |
−0.90 |
4.24 |
−1.24; -0.55 |
<0.0001 |
| Not weighed recently |
259 |
51.51 |
13.28 |
52.17 |
13.37 |
−0.67 |
6.27 |
−1.43; -0.10 |
0.0893 |
|
Girls |
|
|
|
|
|
|
|
|
|
| Weighed recently |
645 |
47.69 |
10.09 |
49.26 |
10.41 |
−1.57 |
2.64 |
−1.77; -1.36 |
<0.0001 |
| Not weighed recently |
195 |
47.29 |
10.01 |
49.99 |
11.22 |
−2.70 |
4.11 |
−3.28; -2.12 |
<0.0001 |
|
Recall ability for weight |
|
|
|
|
|
|
|
|
|
|
Boys |
|
|
|
|
|
|
|
|
|
| High recall ability |
718 |
50.64 |
13.33 |
51.40 |
13.40 |
−0.76 |
4.94 |
−1.12; -0.40 |
<0.0001 |
| Low recall ability |
112 |
53.13 |
11.95 |
54.34 |
12.58 |
−1.21 |
5.09 |
−2.17; -0.26 |
0.0131 |
|
Girls |
|
|
|
|
|
|
|
|
|
| High recall ability |
726 |
47.54 |
10.00 |
49.14 |
10.38 |
−1.61 |
2.83 |
−1.81; -1.40 |
<0.0001 |
| Low recall ability |
109 |
48.26 |
10.65 |
51.31 |
11.84 |
−3.06 |
4.45 |
−3.91; -2.21 |
<0.0001 |
|
Response capability for weight |
|
|
|
|
|
|
|
|
|
|
Boys |
|
|
|
|
|
|
|
|
|
| Weighed recently + high recall ability |
538 |
50.61 |
13.15 |
51.49 |
13.36 |
−0.88 |
4.25 |
−1.24; -0.52 |
<0.0001 |
| Weighed recently + low recall ability |
32 |
53.07 |
12.83 |
54.10 |
12.57 |
−1.03 |
4.21 |
−2.55; 0.49 |
0.1757 |
| Not weighed recently + high recall ability |
179 |
50.78 |
13.91 |
51.16 |
13.59 |
−0.39 |
6.62 |
−1.36; 0.59 |
0.4343 |
| Not weighed recently + low recall ability |
80 |
53.15 |
11.66 |
54.44 |
12.66 |
−1.29 |
5.43 |
−2.50; -0.08 |
0.0373 |
|
Girls |
|
|
|
|
|
|
|
|
|
| Weighed recently + high recall ability |
599 |
47.79 |
9.99 |
49.21 |
10.20 |
−1.42 |
2.39 |
−1.61; -1.23 |
<0.0001 |
| Weighed recently + low recall ability |
42 |
46.80 |
11.62 |
50.35 |
13.37 |
−3.56 |
4.44 |
−4.94; -2.17 |
<0.0001 |
| Not weighed recently + high recall ability |
126 |
46.20 |
9.93 |
48.84 |
11.30 |
−2.64 |
3.94 |
−3.33 ¸-1.94 |
<0.0001 |
| Not weighed recently + low recall ability | 67 | 49.17 | 9.98 | 51.92 | 10.83 | −2.75 | 4.46 | −3.84 ¸-1.66 | <0.0001 |
* Paired T-test.