Table 1 National incidence of calcaneal fractures among Chinese population by demographic, socioeconomic, and geographic factors in 2014

Overall

512187

45

17.3 (12.3–22.4)

14

5.5 (2.6–8.4)

59

11.5 (8.6–14.5)

Age (years)

 0–14

81166

4

9

1

2.7

5

6.2

(0.2–17.9)

(0.8–11.6)

 15–44

236206

18

15.2

4

3.4

22

9.3

(8.2–22.3)

(0.1–6.7)

(5.4–13.2)

 45–64

138533

19

27.5

5

7.2

24

17.3

(15.1–39.8)

(0.9–13.5)

(10.4–24.3)

 65 +

56282

4

14.2

4

14.2

8

14.2

(0.3–28.2)

(0.3–28.1)

(4.4–24.1)

p value for trend test

512187

Ethnicity

 Han

477508

43

17.8

14

5.9

57

11.9

(12.5–23.1)

(2.8–9.1)

(8.8–15)

 Others

34679

2

11.4

0

0

2

5.8

(− 4.4–27.1)

p value for difference test

512187

Region

 East

232998

24

20.1

7

6.2

31

13.3

(12.1–28.1)

(1.6–10.7)

(8.6–18)

 Central

99109

7

14.1

3

6.1

10

10.1

(3.6–24.5)

(3.8–16.3)

 West

180080

14

15.5

4

4.5

18

10

(7.4–23.6)

(0.1–8.8)

(5.4–14.6)

p value for difference test

512187

Urbanization

 Urban area

203101

12

11.7

6

6

18

8.9

(5.1–18.3)

(1.2–10.8)

(4.8–13)

 Rural area

309086

33

21

8

5.3

41

13.3

(13.8–28.2)

(1.6–8.9)

(9.2–17.3)

p value for difference test

512187

Education

 Illiterate

74937

9

26.1

7

17.3

16

21.4

(9.1–43.2)

(4.5–30.1)

(10.9–31.8)

 Primary school

158970

24

29.9

2

2.5

26

16.4

(17.9–41.9)

(10.1–22.6)

 Junior high school

121415

7

11.4

4

6.7

11

9.1

(3–19.8)

(0.1–13.2)

(3.7–14.4)

 Senior high school or above

40841

4

18.5

0

0

4

9.8

(0.4–36.7)

(0.2–19.4)

p value for trend test

396163