Alendronate vs placebo
Study population:
Postmenopausal women
a) For primary prevention average T-score was within 2 standard deviations of the mean for bone density
b) For secondary prevention women who had experienced previous vertebral compression fractures
Comments:
Age range 42-85 but >62 for secondary prevention.
These NNTs apply to the first 5 years of treatment only.
All patients received calcium and vitamin D
Outcome | Duration | NNT | Annualised NNT | ||||||||||||||||||||||||||||
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Rate of vertebral, non-vertebral or hip fractures (as below) over a 5 year period vertebral primary prevention | 60 months (5 years) |
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Non-vertebral primary prevention | 60 months (5 years) |
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Hip primary prevention | 60 months (5 years) |
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