From: Adverse events, bone mineral density and discontinuation associated with generic alendronate among postmenopausal women previously tolerant of brand alendronate: a retrospective cohort study
July/03-Oct/05
Oct/05-Dec/07
Total number of patients
301
Number of AEs resulting in discontinuation
3
44
Number of patient months at risk
20492
9929
Rate of AEs per patient-months-at-risk
0.0001**
0.0044**