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Table 2 Sexual behaviors of respondents 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

Grade II

Grade III

Grade IV

Total

Pvalue*

Grade I

Grade II

Grade III

Grade IV

Total

Pvalue*

Sexual experience†

            

Yes

11.7

16.7

23.8

22.6

17.6

<0.001

5.4

7.7

11.6

13.1

8.6

<0.001

No

88.3

83.3

76.2

77.4

82.4

 

94.6

92.3

88.4

86.9

91.4

 

Time of first sexual intercourse†

            

Before university

8.9

7.2

7.2

2.8

7.3

<0.001

2.9

1.7

1.7

0.3

1.9

<0.001

University

2.5

8.9

15.6

19.1

9.7

 

2.1

5.6

9.4

11.9

6.1

 

Not specified

0.3

0.6

1.0

0.7

0.6

 

0.4

0.4

0.6

0.9

0.5

 

Partner type (in previous year)‡

            

Ever commercial/casual partner

18.8

16.3

13.1

10.2

14.7

0.002

9.2

5.0

3.8

1.7

4.7

0.007

Regular partner only

79.3

80.2

84.2

88.1

82.7

 

87.2

90.6

94.8

95.8

92.5

 

Missing

1.9

3.5

2.7

1.8

2.6

 

3.7

4.4

1.4

2.5

2.8

 

Number of sexual partners (in previous year)‡

            

≥2

22.4

18.5

17.2

10.6

17.6

0.001

11.0

13.2

11.8

12.7

12.2

0.85

1

70.2

70.1

74.1

84.1

73.8

 

77.1

81.1

82.2

81.4

80.8

 

Missing

7.4

11.4

8.8

5.3

8.6

 

11.9

5.7

6.1

5.9

7.0

 

Condom use (in previous year)‡

            

Never/Rarely

46.3

35.9

31.0

27.9

35.1

<0.001

43.1

35.8

31.9

33.1

35.2

0.08

Sometimes

23.9

15.8

19.9

15.9

19.1

 

14.7

16.4

19.7

20.3

18.0

 

Often/Always

25.6

41.3

41.9

50.0

39.5

 

32.1

32.7

35.7

35.6

34.2

 

Missing

4.2

7.1

7.2

6.2

6.4

 

10.1

15.1

12.7

11.0

12.5

 

Pill use (in previous year)‡

            

Never/Rarely

58.9

53.0

58.1

58.0

56.9

0.81

46.8

47.8

53.1

47.5

49.4

0.63

Sometimes

21.0

19.8

17.0

11.1

17.7

 

17.4

18.9

14.6

21.2

17.5

 

Often/Always

17.5

23.9

21.2

28.3

22.2

 

30.3

29.6

28.6

28.0

29.0

 

Missing

2.6

3.3

3.7

2.7

3.2

 

5.5

3.8

3.8

3.4

4.0

 

Gender of sexual partner (lifetime)¶

            

Homosexual/Bisexual

2.3

3.8

4.0

3.1

3.4

0.32

3.5

5.4

1.2

1.8

2.9

0.04

Heterosexual only

91.3

86.8

87.8

90.6

88.7

 

82.6

83.5

88.3

85.1

85.3

 

Missing

6.4

9.4

8.3

6.3

7.9

 

13.9

11.2

10.5

13.1

11.8

 

History of pregnancy of partner or themselves (lifetime)¶

            

Yes

6.6

9.4

11.0

12.5

9.8

<0.01

8.5

8.8

11.4

10.1

9.9

0.40

No/Don't know

87.0

82.1

81.4

81.9

82.9

 

77.1

79.6

77.8

78.0

78.2

 

Missing

6.4

8.5

7.7

5.6

7.3

 

14.4

11.5

10.8

11.9

11.9

 

History of induced abortion of partner or themselves (lifetime)¶

            

Yes

6.6

7.8

10.7

12.9

9.3

0.001

9.5

9.2

10.5

10.7

10.0

0.65

No/Don't know

86.5

82.8

81.8

81.5

83.1

 

75.6

79.6

78.4

77.4

78.0

 

Missing

6.9

9.4

7.5

5.6

7.6

 

14.9

11.2

11.1

11.9

12.0

 

History of being diagnosed as having STDs (lifetime)¶

            

Yes

1.1

1.4

1.3

1.0

1.3

0.88

1.0

1.9

1.8

0.6

1.5

0.80

No

88.6

82.8

87.1

88.9

86.5

 

80.1

81.5

83.8

81.0

81.9

 

Missing

10.3

15.7

11.7

10.1

12.3

 

18.9

16.5

14.4

18.5

16.6

 
  1. * Chi square test for linear trend in proportion.
  2. † Among all respondents.
  3. ‡ Among respondents who had sex in the previous year (n = 309, 368, 513, and 226 for male grade I, II, III and IV students, respectively, and n = 109, 159, 213, and 118 for female grade I, II, III, and IV students, respectively).
  4. ¶ Among all sexually active respondents (n = 437, 553, 703, and 287 for male grade I, II, III, and IV students, respectively, and n = 201, 260, 334, and 168 for female grade I, II, III, and IV students, respectively).
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