Table 1 Comparison of mean height (cm) of Hong Kong children and adolescents aged 6 to 18 y by gender in 1963, 1993 and 2005/6, with age groups defined as > 5.5–6.5 = 6 y

Boys

6

283

110.7

5.1

223

116.0

5.4

138

117.9

4.5

5.3*

0.18

1.9*

0.15

7

742

115.5

5.3

643

120.6

5.6

483

122.9

5.8

5.1*

0.17

2.2*

0.18

8

1030

120.5

5.5

724

126.1

5.4

564

127.9

5.9

5.6*

0.19

1.8*

0.14

9

1076

125.2

5.7

634

131.0

5.8

640

133.1

5.7

5.8*

0.19

2.1*

0.16

10

1144

130.0

6.1

694

136.3

5.9

602

138.5

6.5

6.3*

0.21

2.1*

0.17

11

1121

134.8

6.6

597

141.6

6.5

636

143.5

7.2

6.8*

0.23

1.9*

0.15

12

1033

140.0

7.3

638

147.8

8.0

739

151.0

8.1

7.8*

0.26

3.2*

0.25

13

1052

147.0

8.2

642

155.3

8.6

647

158.2

8.5

8.3*

0.28

3.0*

0.22

14

1288

155.6

7.8

550

162.3

7.9

672

164.2

7.6

6.7*

0.22

1.9*

0.15

15

1622

161.5

6.6

479

166.9

6.2

588

167.9

6.0

5.4*

0.18

1.0*

0.08

16

1711

164.9

5.8

430

169.5

6.5

562

170.6

5.5

4.6*

0.15

1.1*

0.08

17

1370

166.8

5.3

442

169.8

5.8

572

171.4

5.9

3.0*

0.1

1.6*

0.12

18

874

167.0

5.1

311

170.7

5.9

468

171.7

5.5

3.7*

0.12

1.0*

0.08

Girls

6

282

110.0

4.7

211

115.4

5.5

128

117.3

5.0

5.4*

0.18

1.9*

0.15

7

742

114.7

5.1

553

119.8

5.1

488

120.8

5.3

5.1*

0.17

0.9*

0.08

8

970

120.0

5.6

647

125.2

5.6

471

127.2

5.5

5.2*

0.17

2.0*

0.15

9

1022

125.1

6.2

617

131.1

6.3

601

132.7

6.3

6.0*

0.2

1.7*

0.12

10

1178

130.5

6.7

633

137.1

6.9

554

138.4

6.8

6.6*

0.22

1.3*

0.1

11

1312

136.6

7.2

584

143.7

7.2

584

145.4

7.0

7.1*

0.24

1.7*

0.13

12

1340

144.0

7.5

579

149.6

6.7

734

151.5

6.4

5.6*

0.19

1.9*

0.15

13

1159

150.0

6.9

633

153.2

5.9

640

155.2

6.0

3.2*

0.11

2.0*

0.15

14

1152

154.0

6.1

617

156.3

5.4

667

157.0

5.3

2.3*

0.08

0.8*

0.05

15

1275

155.4

5.4

552

157.0

5.3

637

157.9

5.2

1.6*

0.05

1.0*

0.07

16

1267

155.6

5

520

157.3

5.1

590

158.4

5.4

1.7*

0.06

1.1*

0.08

17

984

155.6

4.9

536

157.8

5.3

642

158.7

5.4

2.2*

0.07

0.9*

0.07

18

614

155.6

4.7

334

158.3

5.3

453

158.7

5.7

2.7*

0.09

0.4

0.03