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. 2014 Mar 3;2014(3):CD010813. doi: 10.1002/14651858.CD010813.pub2

Herings 1999.

Methods cohort study
Participants 1986‐1995
33 cases / 450,000 women (prescription database)
age: 15‐49 y
diagnosis: ad hoc
Interventions 2nd and 3rd generation
Outcomes Events during 2nd generation 29 / 121,411; 3rd generation 49 / 88,295.
Adjustment for confounding: yes
Notes The Netherlands