References

  1. Anochie IC, Ekpeme EE. Prevalence of sexual activity and outcome among female secondary schools in Port-Harcourt Nigeria. Afr J Reprod Health. 2001; 5(2): 63-67. PubMed | Google Scholar

  2. Otoide VO, Oronsaye F, Okonofua FE. Why nigerian adolescents seek abortion rather than contraception: evidence from focus-group discussions. International Family Planning Perspectives. 2001; 27(2): 77-81. PubMed | Google Scholar

  3. Graham A, Moore L, Sharp D, Diamond I. Improving teenagers' knowledge of emergency contraception: cluster randomised controlled trial of a teacher led intervention. British Medical Journal. 2002; 324(7347): 1179. PubMed | Google Scholar

  4. Aderibigbe SA, Araoye MO. Effect of Health Education on Sexual Behaviour of Students of Public Secondary Schools in Ilorin, Nigeria. European Journal of Scientific Research. 2008; 24(1): 33-41. PubMed | Google Scholar

  5. American Academy of Pediatrics Policy Statement. Contraception and adolescents. Pediatrics. 2007; 120(5): 1135-1148. PubMed | Google Scholar

  6. Aziken ME, Okonta PI, Adedapo BA. Knowledge and perception of emergency contraception among female Nigerian undergraduates. International Family Planning Perspectives. 2003; 2: 84-87. Google Scholar

  7. Aderibigbe SA. Effect of health education on reproductive health knowledge, attitude and risky sexual behavior among students of public secondary schools in Ilorin. A dissertation submitted to the West Africa College of Physicians. 2006; 1-141. Google Scholar

  8. Gold MA, Sucato SG, Conard LAE, Adams PJ. Provision of emergency contraception to adolescents: position paper of the society for adolescent medicine. Journal of Adolescent Health. 2004; 35: 66-70. PubMed | Google Scholar

  9. Vasilakis C, Jick S, Jick H. The risk of venous thromboembolism in users of postcoital contraceptive pills. Contraception. 1999 Feb; 59(2): 79-83. PubMed | Google Scholar

  10. Trussell J, Koenig J, Ellertson C, Stewart F. Preventing unintended pregnancy: the cost-effectiveness of three methods of emergency contraception. Am J Public Health. 1997 Jun; 87(6): 932-7. PubMed | Google Scholar

  11. Arowojolu AO, Adeyemi OA. Perception and practice of emergency contraception by post-secondary school students in southwest Nigeria. Afr Reprod Health. 2000; 4(1): 56-65. PubMed | Google Scholar

  12. Trussell J, Ellerton C, VonHertzen H et al. Estimating the effectiveness of emergency contraceptive pills. Contraception. 2003 Apr; 67(4): 259-65. PubMed | Google Scholar

  13. Von Hertzen H, Piaggio G, Ding J. WHO Research Group on postovulatory methods of fertility regulation Low dose mifepristone and two regimens of levonorgestrel for emergency contraception: a WHO multicentre randomized trial. Lancet. 2002; 360: 1803-10. Google Scholar

  14. Okonofula FE, Odimegwu C, Aina B et al. Women's Experiences of Unwanted Pregnancy and Induced Abortion in Nigeria. Critical Issues in Reproductive Health, The Robert H. Ebert Program, New York: Population Council, 1996. Google Scholar

  15. Anate M, Awoyemi O, Oyawoye O. Induced abortion in Ilorin, Nigeria. International Journal of Gynaecology and Obstetrics.1995; 49(2): 197-98. PubMed | Google Scholar

  16. Brabin L, Kemp J, Obunge OK et al. Reproductive tract infections and abortions amongst girls in rural Nigeria. Lancet. 1995; 345(8945): 300-04. PubMed | Google Scholar

  17. Gichangi PB, Karanja JG, Kigondu CS, Fonck K, Temmerman M. Knowledge, attitudes, and practices regarding emergency contraception among nurses and nursing students in two hospitals in Nairobi, Kenya. Contraception. 1999; 59(4): 253-6. PubMed | Google Scholar

  18. Ebuehi OM, Ekanem EE, Ebuehi OA. Knowledge and practice of emergency contraception among female undergraduates in the University of Lagos, Nigeria. East Afr Med J. 2006; 83(3): 90-5. PubMed | Google Scholar

  19. Abbasiattai AM, Umoiyobo AJ, Bassey EA, Etuk SJ, Udoma EJ. Misconception of emergency contraception among tertiary school students in Akwa Ibom state, South-south Nigeria. Niger J Clin Pract. 2007; 10(1): 30-34. PubMed | Google Scholar

  20. Roye CF, Johnsen JR. Adolescents and emergency contraception. J Pediatr Health Care. 2002; 16(1): 3-9. PubMed | Google Scholar

  21. Ottesen S, Narring F, Renteria SC, Michaud PA. Emergency contraception among teenagers in Switzerland: a cross-sectional survey on the sexuality of 16- to 20-year-olds. J Adolesc Health. 2002; 31(1): 101-10. PubMed | Google Scholar

  22. Graham A, Green L, Glasier AF. Teenagers' knowledge of emergency contraception: questionnaire survey in south east Scotland. British Medical Journal. 1996; 312(7046): 1567-9. PubMed | Google Scholar

  23. Walker DM, Torres P, Gutierrez JP, Flemming K, Bertozzi SM. Emergency Contraception use is correlated with increased condom use among adolescents: results from Mexico. J Adolesc Health. 2004 Oct; 35(4): 329-34. PubMed | Google Scholar

  24. Langille DB, Delaney ME. Knowledge and use of emergency post-coital contraception by female students at a higher school in Nova Scotia. Canadian Journal of Public Health. 2000; 91(1): 29-32. PubMed | Google Scholar

  25. Ziebland S, Maxwell K, Greenhall E. It's a megadose of hormones isn't it? Why women may be reluctant to use emergency contraception. Br J Fam Plan. 1996; 22: 84-86. Google Scholar

  26. Jekel JF, Katz DL, Elmore JG. Sample size, randomization, and probability theory. Epidemiology, Biostatistics and Preventive Medicine. 2nd Ed. Philadelphia: Saunders; 2001:194-99. Google Scholar

  27. Johnson R, Nshom N, Nye AM, Cohall AT. There's always Plan B: adolescent knowledge, attitudes and intention to use emergency contraception. Contraception. 2010 Feb; 81(2): 128-32. PubMed | Google Scholar

  28. Cremer M, Holland E, Adams B, Klausner D, Nichols S, Ram R, Alonzo T. Adolescent comprehension of emergency contraception in New York City. Obstet Gynecol. 2009 Apr; 113(4): 840-4. PubMed | Google Scholar

  29. International Consortium for Emergency Contraception (ICEC). Expanding Global Access to Emergency Contracep¬tion. Seattle, WA: ICEC, 2000. Google Scholar

  30. Chris Parker. Adolescents and Emergency Contraceptive Pills in Developing Countries. Family Health International, May 2005 No.WP05-01. Google Scholar