Sterilization failure, sterilization reversal, and pregnancy after sterilization reversal in Quebec
Référence bibliographique 
Trussell, James, Guilbert, Édith et Hedley, Allison. 2003. «Sterilization failure, sterilization reversal, and pregnancy after sterilization reversal in Quebec ». Obstetrics and Gynecology, vol. 101, no 4, p. 677-684.
Intentions : Examiner ce qui se produit dans les années suivant la stérilisation des hommes et des femmes au Québec.
Échantillon/Matériau : « All data required for this study were obtained from la Régie de l’Assurance-maladie du Québec. [...] We restricted the analysis to women who had sterilizations at ages 15-49 and to men who had vasectomies at ages 18-49. » (p. 678)
Type de traitement des données : Analyse statistique
« OBJECTIVE: 1) To determine the likelihood of sterilization reversal and of subsequent sterilization after sterilization reversal among men and women and 2) to examine the likelihood of pregnancy after sterilization (contraceptive failure) and of pregnancy after sterilization reversal. METHODS: Payment data from the Quebec provincial health insurance system were obtained for each person undergoing vasectomy or female sterilization from January 1, 1980 to December 31, 1999 and linked through a unique identifying number for each person. Using standard techniques of survival analysis, we computed the cumulative probability of experiencing each of six events. RESULTS: Among women, 0.9% (of 311,960) experienced a pregnancy after sterilization, 1.8% (of 321,929) obtained a reversal after sterilization, 61% (of 4369) achieved a pregnancy after sterilization reversal and 48% achieved a delivery; 23% (of 4677) obtained a subsequent sterilization after reversal. Among men, 2.4% (of 310,827) obtained a reversal after vasectomy and 18% (of 6694) obtained a subsequent vasectomy after reversal. All of these risks were much higher among those in the youngest age groups. CONCLUSION: Sterilization reversal and pregnancy after sterilization are not rare. Relatively high rates of reversal among the youngest age groups suggest a need for better counseling about alternative contraceptive strategies. » (p. 677)