Table 2 Comparison of mean weight (kg) of Hong Kong children and adolescents aged 6 to 18 y by gender in 1963, 1993 and 2006, with age groups defined as > 5.5–6.5 = 6 y
From: Secular changes in height, weight and body mass index in Hong Kong Children
1963 | 1993 | 2005/6 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Age | N | Mean | SD | n | Mean | SD | n | Mean | SD | d1 | d1/yr | d2 | d2/yr |
Boys | |||||||||||||
6 | 283 | 17.5 | 1.5 | 223 | 21.3 | 4.5 | 138 | 22.4 | 3.3 | 3.8* | 0.13 | 1.1* | 0.08 |
7 | 742 | 19.0 | 2.2 | 643 | 22.9 | 4.5 | 483 | 24.9 | 5.7 | 3.9* | 0.13 | 2.0* | 0.15 |
8 | 1030 | 20.6 | 2.6 | 724 | 25.7 | 5.2 | 564 | 27.7 | 6.4 | 5.1* | 0.17 | 2.0* | 0.15 |
9 | 1076 | 22.4 | 3.1 | 634 | 28.8 | 6.5 | 640 | 30.5 | 6.7 | 6.4* | 0.21 | 1.7* | 0.13 |
10 | 1144 | 24.6 | 3.9 | 694 | 32.4 | 8.0 | 602 | 35.5 | 9.2 | 7.8* | 0.26 | 3.1* | 0.24 |
11 | 1121 | 27.1 | 4.8 | 597 | 36.3 | 8.9 | 636 | 38.8 | 9.8 | 9.2* | 0.31 | 2.5* | 0.19 |
12 | 1033 | 30.0 | 5.9 | 638 | 39.9 | 10.0 | 739 | 44.4 | 10.8 | 9.9* | 0.33 | 4.5* | 0.35 |
13 | 1052 | 34.5 | 7.0 | 642 | 44.9 | 10.8 | 647 | 49.4 | 12.3 | 10.4* | 0.35 | 4.5* | 0.35 |
14 | 1288 | 40.0 | 6.8 | 550 | 50.5 | 10.5 | 672 | 53.3 | 11.0 | 10.5* | 0.35 | 2.8* | 0.22 |
15 | 1622 | 45.6 | 6.4 | 479 | 53.8 | 10.4 | 588 | 57.3 | 11.5 | 8.2* | 0.27 | 3.5* | 0.27 |
16 | 1711 | 49.0 | 6.0 | 430 | 57.5 | 9.8 | 562 | 59.5 | 11.2 | 8.5* | 0.28 | 2.0* | 0.15 |
17 | 1370 | 51.3 | 5.9 | 442 | 59.1 | 9.1 | 572 | 61.3 | 11.6 | 7.8* | 0.26 | 2.2* | 0.17 |
18 | 874 | 52.3 | 5.9 | 311 | 60.3 | 9.4 | 468 | 62.0 | 10.5 | 8.0* | 0.27 | 1.7* | 0.13 |
Girls | |||||||||||||
6 | 282 | 16.9 | 1.7 | 211 | 20.2 | 3.5 | 128 | 21.3 | 4.0 | 3.3* | 0.11 | 1.1* | 0.08 |
7 | 742 | 18.3 | 2.3 | 553 | 22.1 | 4.3 | 488 | 23.0 | 4.7 | 3.8* | 0.13 | 1.0* | 0.07 |
8 | 970 | 20.2 | 2.9 | 647 | 24.9 | 5.1 | 471 | 26.1 | 5.1 | 4.7* | 0.16 | 1.2* | 0.09 |
9 | 1022 | 22.4 | 3.5 | 617 | 27.9 | 6.2 | 601 | 29.5 | 6.4 | 5.5* | 0.18 | 1.6* | 0.12 |
10 | 1178 | 25.0 | 4.2 | 633 | 31.4 | 7.1 | 554 | 33.2 | 7.8 | 6.4* | 0.21 | 1.8* | 0.14 |
11 | 1312 | 28.0 | 5.4 | 584 | 35.9 | 8.5 | 584 | 37.2 | 8.3 | 7.9* | 0.26 | 1.3* | 0.10 |
12 | 1340 | 32.7 | 6.8 | 579 | 40.3 | 8.7 | 734 | 42.6 | 9.6 | 7.6* | 0.25 | 2.3* | 0.18 |
13 | 1159 | 37.3 | 6.9 | 633 | 44.3 | 9.7 | 640 | 46.5 | 8.8 | 7.0* | 0.23 | 2.2* | 0.17 |
14 | 1152 | 41.4 | 6.3 | 617 | 47.6 | 8.4 | 667 | 48.4 | 8.5 | 6.2* | 0.21 | 0.7 | 0.06 |
15 | 1275 | 43.6 | 5.7 | 552 | 48.7 | 7.0 | 637 | 49.5 | 8.9 | 5.1* | 0.17 | 0.8 | 0.06 |
16 | 1267 | 44.5 | 5.3 | 520 | 49.5 | 7.4 | 590 | 51.1 | 9.1 | 5.0* | 0.17 | 1.7* | 0.12 |
17 | 984 | 45.1 | 5.1 | 536 | 50.5 | 7.2 | 642 | 51.1 | 9.5 | 5.4* | 0.18 | 0.6 | 0.05 |
18 | 614 | 45.5 | 5.1 | 334 | 51.0 | 6.9 | 453 | 51.3 | 8.3 | 5.5* | 0.18 | 0.4 | 0.02 |