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A 65- year old woman with low bone density in 1992 was treated with aldenronate through the year 1999. Bone density was measured irregularly over...

The normal change in bone density over time from age 40 to 80 is a decrease of 0.15 g/cm2. Does the rate of change in this woman differ significantly from the expected-age related change?
A 65- year old woman with low bone density in 1992 was treated with aldenronate through the year 1999. Bone density was measured irregularly over this period. The results for change in bone density of the lumbar spine are shown in this table. Visit (i) Time from baseline (months) (t i ) Bone Density, lumbar spine (g/cm 2 ) (x i ) 1 0 0.797 2 8 0.806 3 18 0.817 4 48 0.825 5 64 0.837 6 66 0.841 7 79 0.886 8 92 0.881 Note: 8 8 8 t i = 375, x i = 6.69, t 2 i = 25, 849 i =1 i=8 i=1 8 8 x 2 i = 5.60197, x i t i = 320.874 i=1 i=1 The normal change in bone density over time from age 40 to 80 is a decrease of 0.15 g/cm 2 . Does the rate of change in this woman differ significantly from the expected-age related change?
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Statistics and Probability-8196589.xls

A 65- year old woman with low bone density in 1992 was treated with aldenronate
through the year 1999. Bone density was measured irregularly over this period. The
results for change in bone density...

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