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Table 3 Bivariate analysis of factors with unintended pregnancy among sexually active students by genders

From: Prevalence of and factors associated with unintended pregnancies among sexually active undergraduates in mainland China

Variable

Males (n = 3835)

χ2

p

Females (n = 2512)

χ2

p

Total

Pregnancy

%

Total

Pregnancy

%

Residential areas

 0 = Rural

1886

342

18.1

4.61

0.032

1371

198

14.4

0.48

0.491

 1 = Urban

1949

407

20.9

1141

176

15.4

Age (Years)

 1 = 15–17

210

49

23.3

24.54

< 0.001

84

13

15.5

36.84

< 0.001

 2 = 18–22

3387

626

18.5

2320

323

13.9

 3 = 23–26

238

74

31.1

108

38

35.2

Monthly expenditure (Yuan)

 0 ≥ 1000

3056

452

14.8

215.08

< 0.001

1996

273

13.7

11.25

0.001

 1 ≤ 1000

779

297

38.1

516

101

19.6

Living arrangement

 0 = Living with both parents

2297

347

15.1

71.33

< 0.001

1734

222

12.8

19.22

< 0.001

 1 = Others*

1538

402

26.1

778

152

19.5

Family’s attitude toward premarital sex

 0 = Neutral or unacceptable

2046

347

12.3

147.21

< 0.001

1909

211

11.1

92.33

< 0.001

 1 = Acceptable

1789

402

27.8

603

163

27.0

Experience of sexual abuse

 0 = No or Not sure

3493

524

15.0

511.25

< 0.001

2032

276

13.6

14.31

< 0.001

 1 = Yes

342

225

65.8

480

98

20.4

Age at firs sex

 0 = Older than 14

3478

454

13.1

997.35

< 0.001

2373

275

11.6

368.51

< 0.001

 1 = Younger than 14

357

295

82.6

139

99

71.2

Number of Partners

 0 = Single

2533

497

19.6

0.04

0.844

1838

228

12.4

33.35

< 0.001

 1 = Multiple

1302

252

19.4

674

146

21.7

Partner type

 0 = Stable

3545

646

18.2

51.02

< 0.001

2426

332

13.7

80.99

< 0.001

 1 = Casual

290

103

35.5

86

42

48.8

Condom use knowledge

 0 = Wrong or unsure

725

160

22.1

3.67

0.056

637

96

15.1

0.02

0.881

 1 = Correct

3110

589

18.9

1875

278

14.8

Condom use at first sex

 0 = Yes

2487

510

20.5

4.29

0.038

1665

234

14.1

2.71

0.099

 1 = No or Not sure

1348

239

17.7

847

140

16.5

Difficulties in acquiring condoms

 0 = No difficulty at all

3448

631

18.3

32.90

< 0.001

2175

305

14.0

9.59

0.002

 1 = Some or very difficult

387

118

30.5

337

69

20.5

Condom use skills

 0 = Knowing how to use condoms

822

111

13.5

24.18

< 0.001

211

37

17.5

1.27

0.259

 1 = Not knowing how to use condoms

3013

638

21.2

2301

337

14.6