title: A comparative analysis of the modification of sexual desire of users of oral hormonal contraceptives and intrauterine contraceptive devices.
abstract: OBJECTIVE
  To compare the influence of oral hormonal contraceptives (OCs) and the use of intrauterine contraceptive devices (IUDs) on the modification of sexual desire.
  
  
  METHODS
  A prospective observational study of 1073 women using OCs or an IUD at the Family Planning Center 'Marina Alta' in Alicante, Spain. In order to evaluate the relative risk regarding the decrease in libido attributed to each contraceptive method, a logistic regression analysis was undertaken which considered the factors of age adjustment, level of studies, family planning information, relationship with partner, age when sexual relationships were initiated, parity, contraceptive method previously used and the duration of use of the contraceptive method.
  
  
  RESULTS
  No differences in the decrease of sexual desire were observed between the use of the OC and IUD (odds ratio (OR) 1.32; 95% confidence interval (CI) 0.70-2.49), yet differences were noted, however, in relation to age (OR 1.05; 95% CI 1.01-1.10). Although these differences were not statistically significant, a high level of awareness regarding family planning was shown to increase sexual desire when compared to a lower level of information on this subject (OR 0.64; 95% CI 0.41-1.01). Sexual desire was seen to decrease if the quality of the relationship with the partner was average (OR 2.24; 95% CI 1.36-3.69) or poor (OR 4.69; 95% CI 1.93-11.4). Nulliparous women showed a greater decrease in sexual desire in relation to women who had already given birth (OR 1.57; 95% CI 1.00-2.47). Sexual desire was greater if the contraceptive method had already been in use for 6-12 months (OR 0.41; 95% CI 0.17-0.98).
  
  
  CONCLUSIONS
  Sexual desire does not vary in relation to the use of OCs or IUDs, yet it does decrease with age, in nulliparous women and in those with an average or poor relationship with their partner. Furthermore, sexual desire shows an increase between the first 6 and 12 months of contraceptive treatment.
authors.affiliation: Family Planning Center Marina Alta, Alicante, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Martin-Loeches
authors.forename: R M
authors.initials: RM
authors.lastname: Ortí
authors.forename: M
authors.initials: M
authors.lastname: Monfort
authors.forename: E
authors.initials: E
authors.lastname: Ortega
authors.forename: J
authors.initials: J
authors.lastname: Rius
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003075:Coitus / Q000523:psychology*; D003267:Contraception / Q000523:psychology* / Q000706:statistics & numerical data; D003268:Contraception Behavior / Q000523:psychology*; D003276:Contraceptives, Oral; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D016015:Logistic Models; D008875:Middle Aged; D016017:Odds Ratio; D011446:Prospective Studies; D012307:Risk Factors; D013997:Time Factors; D016387:Women's Health
chemical_list: D003276:Contraceptives, Oral