Impact of the sharp changes in the use of contraception in 2013 on the risk of XXXX in France.

@entity1 @entity1211 @entity1151
BACKGROUND: In late 2012, a national pill crisis led French @entity1 to promptly change their behavior regarding contraception, with a significant increase in the use of first-generation and second-generation combined oral contraceptives to the detriment of third-generation and fourth-generation products (C3Gs and C4Gs). OBJECTIVE: To assess the impact of the sharp changes in 2013 on the rate of @entity1 hospitalized for @entity1151 in France. METHODS: All hospitalized @entity1151 in @entity1 aged 15-49  years, excluding those occurring during delivery stay, were identified from the French national hospital discharge databases from 2010 to 2013. Hospitalization rates, overall and by age group, were calculated. We compared rates in 2013 with those in 2012, and with mean rates over the preceding 3-year period (2010-2012). Two populations of non-users of contraceptives were used as control groups: @entity1 aged 15-49  years, and @entity1 aged 50-69  years. The expected @entity1151 incidence, estimated by modeling the number of expected cases based on modifications of combined oral contraceptive exposure, was also considered. RESULTS: In France, in 2013 as compared with 2012, the @entity1151 hospitalization incidence rate in @entity1 aged 15-49  years fell by 10.6%, corresponding to a reduction of 322 hospitalizations (95% confidence interval -468 to -156). The expected @entity1151 reduction is consistent with the observed reduction in hospitalization incidence rate (-10.2% and -10.6%, respectively). Such a pattern was not observed in the control groups. CONCLUSIONS: The sharp change in contraception methods, with decreased use of C3Gs and C4Gs, probably played a major role in the reduction in @entity1211 morbidity in France.
