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Table 2 Sexual orientation, voluntary sexual experiences and sexual risk-taking behavior in adolescents using sex as self-injury (SASI) or not (non-SASI)

From: Self-reported frequency of sex as self-injury (SASI) in a national study of Swedish adolescents and association to sociodemographic factors, sexual behaviors, abuse and mental health

  SASI
n = 119–125
Non-SASI
n = 3654–5625
Total
n = 3773–5750
χ2 df p value
n % n % n %
Sexual orientation        124.5 3 <.001
 Heterosexual 75 60.0 4943 87.9 5018 87.3
 Homosexual 7 5.6 74 1.3 81 1.4
 Bisexual 29 23.2 240 4.3 269 4.7
 Other or unsure 14 11.2 368 6.5 382 6.6
Voluntary sexual experiences
 Oral intercourse 115 92.0 3232 58.0 3347 58.7 58.4 1 <.001
 Anal intercourse 65 52.4 1025 18.5 1090 19.2 89.8 1 <.001
 Vaginal intercourse 112 89.6 3441 61.8 3553 62.4 40.3 1 <.001
Total number of sexual partnersa        66.2 2 <.001
 One 12 10.1 1186 32.5 1198 31.8
 2–5 40 33.6 1572 43.0 1612 42.7
 More than 5 67 56.3 896 24.5 963 25.5
Use of contraceptives last intercoursea 70 58.3 2500 68.3 2570 68.0 5.3 1 .021
Ever experiences abortion (self or partner) 10 8.0 216 3.8 226 3.9    .031*
Ever treatment for Chlamydia 7 5.6 214 3.8 221 3.8    ns
Ever sold sexual services 14 11.3 37 .7 51 .9    <.001*
  1. * Fisher’s exact test
  2. aQuestions about number of sexual partners and contraceptive use have only been asked to adolescents with earlier voluntary sexual experiences