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Table 3 Period of first awareness of sex, exposure to pornographic media, attitude toward sex by gender and grade

From: Sexual behavior and awareness of Chinese university students in transition with implied risk of sexually transmitted diseases and HIV infection: A cross-sectional study

Characteristics

Male (%)

Female (%)

 

Grade I (n = 3728)

Grade II (n = 3308)

Grade III (n = 2949)

Grade IV (n = 1270)

Total (n = 11255)

Pvalue*

Grade I (n = 3708)

Grade II (n = 3375)

Grade III (n = 2869)

Grade IV (n = 1286)

Total (n = 11238)

Pvalue*

Period became aware of sex

            

Before high school

65.6

59.0

52.8

52.5

58.8

<0.001

42.3

32.3

30.0

26.7

34.4

<0.00

High school

32.6

36.6

39.3

37.2

36.1

 

51.9

52.3

45.1

41.4

49.1

1

University

1.3

3.8

7.4

9.8

4.6

 

5.5

15.1

24.7

31.4

16.2

 

Missing

0.4

0.7

0.4

0.6

0.5

 

0.3

0.3

0.2

0.5

0.3

 

First exposure to pornographic media†

            

Early (≤ 16 year-old)

44.4

31.8

29.8

28.5

35.1

<0.001

10.0

6.8

5.6

3.4

7.2

<0.00

Late (≥ 17 year-old)

27.3

40.4

46.2

52.3

38.9

 

7.6

13.4

19.9

22.3

14.2

1

Never

19.1

11.2

8.4

8.3

12.8

 

80.4

77.5

71.0

70.9

76.0

 

Age unknown/Missing‡

9.2

16.6

15.6

10.9

13.2

 

2.0

2.4

3.4

3.3

2.6

 

First exposure to pornographic website

            

Early (≤ 16 year-old)

13.7

7.0

3.2

1.8

7.6

<0.001

0.9

0.5

0.1

0.2

0.5

<0.00

Late (≥ 17 year-old)

42.5

55.0

67.1

75.4

56.3

 

5.0

8.2

15.4

15.9

9.8

1

Never

35.7

22.3

14.9

11.5

23.6

 

93.3

90.1

81.9

81.3

88.1

 

Age unknown/Missing‡

8.1

15.7

14.9

11.3

12.5

 

0.9

1.2

2.5

2.6

1.6

 

Meet a girl/boy friend over the Internet

            

Yes

51.3

49.4

52.2

52.2

51.1

0.31

42.9

40.6

47.1

47.0

43.8

<0.00

No

48.4

50.3

47.5

47.6

48.6

 

56.9

59.3

52.9

52.9

56.1

1

Missing

0.3

0.3

0.3

0.2

0.3

 

0.1

0.1

0.1

0.1

0.1

 

Approve of sex during high school

            

Disapprove

61.1

60.9

61.5

71.1

62.3

<0.001

84.0

87.3

86.8

88.5

86.2

<0.00

Approve/Don't know

37.2

35.4

35.6

27.6

35.2

 

15.4

12.0

12.3

10.3

13.0

1

Missing

1.7

3.7

2.9

1.3

2.6

 

0.6

0.7

0.9

1.2

0.8

 

Approve of sex before marriage

            

Disapprove

14.1

12.0

9.4

12.4

12.1

<0.001

36.4

29.7

26.7

26.2

30.8

<0.00

Approve/Don't know

83.4

83.5

86.6

85.8

84.5

 

62.6

69.0

71.9

72.2

68.0

1

Missing

2.5

4.5

4.0

1.7

3.4

 

1.0

1.3

1.3

1.6

1.2

 

Approve of commercial sex

            

Disapprove

69.9

68.4

63.4

65.3

67.3

<0.001

86.5

85.4

83.2

83.1

84.9

<0.00

Approve/Don't know

28.1

27.8

33.4

32.9

29.9

 

12.9

13.9

15.8

15.6

14.2

1

Missing

2.0

3.8

3.2

1.8

2.8

 

0.7

0.7

1.0

1.2

0.8

 
  1. *Chi square test for linear trend in proportion.
  2. † Including pornographic novel, magazine, and/or video.
  3. ‡ Missing cases are less than 1% for each grade among both male and female students.
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