RESULTS	BMD percent changes from baseline to 36 months were statistically improved with the use of zoledronic acid compared to observation for the lumbar spine ( 6 % vs -5 % , P < 0.0001 ) , left total hip ( 1 % vs -8 % , P = 0.0002 ) , and left femoral neck ( 3 % vs -8 % , P = 0.0007 ) .\