Table 2 Chi² associations between sexual initiation and sociodemographics, and adjusted odds ratios (95% confidence intervals) for the association between sexual initiation and sociodemographic and lifestyle characteristics by gender

26.5 (243)***

73.5 (673)

16.2 (136)***

83.8 (703)

1.302**

1.075–1.578

1.628***

1.326–1.998

25.7 (196)

74.3 (568)

21.9 (155)

78.1 (552)

38.4 (155)

61.6 (249)

37.2 (124)

62.8 (209)

37.3 (25)

62.7 (42)

54.5 (24)

45.5 (20)

29.3 (76)***

70.7 (183)

27.9 (68)***

72.1 (176)

1 (ref)

1 (ref)

30.2 (221)

69.8 (512)

25.0 (157)

75.0 (470)

1.019

0.687–1.512

1.109

0.679–1.812

23.2 (197)

76.8 (652)

17.6 (145)

82.4 (678)

0.889

0.593–1.333

0.732

0.461–1.162

35.0 (75)

65.0 (139)

29.9 (60)***

70.1 (141)

1.225

0.714–2.100

1.351

0.766–2.382

27.7 (253)

72.3 (662)

25.2 (185)

74.8 (550)

0.956

0.722–1.265

1.176

0.856–1.615

26.8 (249)

73.2 (681)

19.3 (180)

80.7 (754)

1 (ref)

1 (ref)

29.4 (389)

70.6 (935)

22.2 (285)

77.8 (1000)

1.001

(0.699–1.433)

0.964

0.671–1.385

27.8 (230)

72.2 (597)

24.1 (154)

75.9 (484)

1 (ref)

1 (ref)

84.4 (28)***

15.2 (5)

45.5 (10)**

54.5 (12)

4.554*

1.210–17.140

2.873

0.885–9.321

27.9 (584)

72.1 (1510)

22.6 (423)

77.4 (1451)

1 (ref)

1 (ref)

30.7 (143)

69.3 (323)

26.8 (105)*

73.2 (287)

1 (ref)

1 (ref)

28.2 (467)

71.8 (1190)

21.7 (327)

78.3 (1179)

0.873

0.643-1.186

0.901

0.621-1.307

25.0 (411)***

75.0 (1232)

19.8 (287)***

80.2 (1164)

1 (ref)

1 (ref)

40.7 (203)

59.3 (296)

32.3 (151)

67.7 (317)

1.604**

1.134–2.268

1.233

0.883–1.721

1.127

0.976–1302

1.051

0.897–1.232

0.953

0.824–1.102

0.827

0.681–1.004

0.958

0.825–1.112

1.070

0.928–1.234

1.021

0.903–1.156

0.865

0.739–1.013

0.927

0.802–1.071

0.972

0.760–1.244

2.162***

1.831–2.554

2.098***

1.779–2.474

1.581***

1.374–1.818

1.531***

1.246–1.881

1.039

0.911–1.185

1.086

0.937–1.258

1.409***

1.228–1.618

1.833***

1.593–2.110

1.114

0.976–1.272

1.202*

1.036–1.394

1.105

0.951–1.284

1.138

0.950–1.362

1.034

0.877–1.220

0.952

0.807–1.124

1.167*

1.012–1.345

1.117

0.962–1.296

1.093

0.935–1.278

1.068

0.935–1.220

1.307***

1.140–1.497

1.561***

1.238–1.968

1.131

0.984–1.300

1.125

0.952–1.329

1.313***

1.139–1.514

1.211*

1.038–1.413

1.137

0.972–1.330

1.444*

1.092–1.910

0.754**

0.622–0.913

0.869*

0.759–0.994

1.052

0.925–1.197

1.248*

1.052–1.482

1.267**

1.108–1.449

1.009

0.861–1.183

0.986

0.838–1.160

0.918

0.774–1.088

1.011

0.876–1.166

1.074

0.938–1.230