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Table 2 Frequency distribution of demographic characteristics of the intervention and the control groups of workers in two cement factories in Khoy and Urmia, Iran, 2016

From: The impact of theory-based educational intervention on improving helmet use behavior among workers of cement factory, Iran

Group

Intervention

Control

Chi-square/independent t test (p value)

N (%)

N (%)

Demographic variables

 Age (years)

  

0.53

  < 30

36(42.4)

31(36.5)

 

  30–60

49(57.6)

54(63.5)

 

  Mean age

34.32 ± 8.19

33.62 ± 6.17

 

 Education level

  

0.49

  Primary school

12(14.1)

11(12.9)

 

  Middle school

24(28.2)

20(23.5)

 

  High school

40(47.1)

38(44.7)

 

  Higher degree of education

9(10.6)

16(17.6)

 

 Marital status

  

0.54

  Single

22(25.9)

16(18.8)

 

  Married

63(74.1)

69(81.2)

 

 Working experience(years)

  

0.16

  < 3

17(20)

15(17.6)

 

  3–5

32(37.6)

22(25.9)

 

  > 5

36(42.4)

48(56.5)

 

 History of injury

  

0.41

  Yes

15(17.6)

15.3

 

  No

70(82.4)

84.7

 

 Monthly income (Rials)

  

0.11

  < 15,000,000

67(78.8)

69.4

 

  ≥ 15,000,000

18(21.2)

30.6