Table 2 Matrix distributions of categorical body mass index (from 2013 to 2018).

From: Five-year change in body mass index category of childhood and the establishment of an obesity prediction model

Category

2018

Underweight n (%)

Normal n (%)

Overweight n (%)

Obesity n (%)

Overall n (%)

2013

 Underweight

801 (27)

1,928 (66)

116 (4)

95 (3)

2,940 (3)

605 (21)

2,155 (74)

117 (4)

27 (1)

 

 Normal

2,140 (4)

38,868 (79)

5,891 (12)

2,025 (4)

48,924 (55)

2,334 (5)

37,259 (76)

6,521 (13)

2,809 (6)

 

 Overweight

74 (0.5)

6,961 (46)

5,154 (34)

3,089 (20)

15,278 (17)

85 (0.6)

7,812 (51)

4,217 (28)

3,164 (21)

 

 Obesity

77 (0.4)

2,843 (13)

4,732 (22)

14,186 (65)

21,838 (25)

11 (0.05)

3,350 (15)

5,903 (27)

12,509 (57)

 

 Overall

3,092 (3)

50,600 (57)

15,893 (18)

19,395 (22)

88,980 (100)

3,035 (3)

50,577 (57)

16,758 (19)

18,509 (21)

 

Boys

 Underweight

353 (29)

752 (61)

70 (6)

61 (5)

1,236 (3)

276 (23)

867 (71)

62 (5)

15 (1)

 

 Normal

1,067 (5)

17,251 (75)

3,326 (15)

1,234 (5)

22,878 (50)

1,159 (5)

16,515 (72)

3,586 (16)

1,617 (7)

 

 Overweight

43 (0.5)

3,387 (41)

3,000 (36)

1,876 (23)

8,306 (18)

46 (0.6)

3,833 (46)

2,500 (30)

1,927 (23)

 

 Obesity

43 (0.3)

1,348 (10)

2,681 (20)

9,048 (69)

13,120 (29)

5 (0.04)

1,521 (12)

3,477 (27)

8,071 (62)

 

 Overall

1,506 (3)

22,738 (50)

9,077 (20)

12,219 (27)

45,540 (100)

1,487 (3)

22,737 (50)

9,625 (21)

11,630 (26)

 

Girls

 Underweight

448 (26)

1,176 (69)

46 (3)

34 (2)

1,704 (4)

329 (20)

1,288 (76)

55 (3)

12 (1)

 

 Normal

1,073 (4)

21,617 (83)

2,565 (10)

791 (3)

26,046 (60)

1,175 (5)

20,744 (80)

2,935 (11)

1,192 (5)

 

 Overweight

31 (0.4)

3,574 (51)

2,154 (31)

1,213 (17)

6,972 (16)

39 (1)

3,980 (57)

1,717 (25)

1,237 (18)

 

 Obesity

34 (0.4)

1,495 (17)

2,051 (24)

5,138 (59)

8,718 (20)

5 (0.1)

1,828 (21)

2,426 (28)

4,438 (51)

 

 Overall

1,586 (4)

27,862 (64)

6,816 (16)

7,176 (17)

43,440 (100)

1,548 (4)

27,840 (64)

7,133 (16)

6,878 (16)

 

Urban

 Underweight

388 (29)

859 (64)

60 (4)

41 (3)

1,348 (3)

286 (22)

973 (73)

58 (4)

13 (1)

 

 Normal

1,132 (4)

19,800 (79)

3,195 (13)

1,070 (4)

25,197 (52)

1,213 (5)

18,819 (75)

3,605 (14)

1,560 (6)

 

 Overweight

39 (0.4)

3,894 (44)

3,067 (35)

1,795 (20)

8,795 (18)

51 (1)

4,375 (50)

2,506 (28)

1,864 (21)

 

 Obesity

34 (0.3)

1,432 (11)

2,949 (22)

9,004 (67)

13,419 (28)

7 (0.1)

1,996 (15)

3,730 (27)

7,852 (58)

 

 Overall

1,593 (3)

25,985 (53)

9,271 (19)

11,910 (24)

48,759 (100)

1,557 (3)

26,162 (53)

9,899 (20)

11,290 (23)

 

Rural

 Underweight

413 (26)

1,069 (67)

56 (4)

54 (3)

1,592 (4)

319 (20)

1,182 (75)

59 (4)

13 (1)

 

 Normal

1,008 (4)

19,068 (80)

2,696 (11)

955 (4)

23,727 (59)

1,121 (5)

18,440 (78)

2,916 (12)

1,249 (5)

 

 Overweight

35 (0.5)

3,067 (47)

2,087 (32)

1,294 (20)

6,483 (16)

34 (1)

3,438 (53)

1,711 (26)

1,300 (20)

 

 Obesity

43 (0.5)

1,211 (15)

1,783 (22)

5,182 (63)

8,219 (21)

4 (0.05)

1,354 (17)

2,174 (27)

4,657 (57)

 

 Overall

1,499 (4)

24,415 (61)

6,622 (17)

7,485 (19)

40,021 (100)

1,478 (4)

24,414 (61)

6,859 (17)

7,219 (18)

 
  1. Overweight and obesity are defined by References 9,10. The expected counts from fitting the full model using SMLE (Methods section) are given in italic font.