| So far weve considered weight loss as the simple difference between
average pre-diet weight and average post-diet weight. But you migh wish
also to consider relative weight loss: that difference as a proportion
of pre-diet weight. Same structure and analysis, possibly different
results. Or use pre-diet weight as a covariate for the simple weight
loss as a response variable. There may also be interesting comparisons
to be made between the several pre-diet average weights; one can imagine
that these might differ depending on which diet preceded them, or on
their position in the temporal sequence. |
| Ive lost weight in the past only to gain it back and more. Not until Ive found
something incredible have I been able to keep the weight off. To give you an example,
I lost 7 pounds in 7 days and went on for another 2 months to lose another 23 pounds.
My friend and his wife lost a combined 140 pounds in just 4 1/2 months and they have kept
it off for over 2 1/2 years. He went from a 36 to a 30 waist and his wife
went from a size 16 to a size 6. We lost our weight while still enjoying the
foods that we normally ate without counting a calorie and with no exercise.
We werent tired or hungry. Our energy shot through the roof and our bodies were
turned into major fat burning machines. Its INCREDIBLE!! |
| As above, weights were taken in the 10th week. All of the panelists
were then given 10 weeks off to go back to their original (non-trial) diet
and weighed themselves as above before starting a new diet. In the final
10-week period, the panelists went on the Diet they had not tried before. |
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| Suppose you are interested in differences in weight loss as a function of
the several diets. For each person, you have 3 weight-loss values,
being the difference between measurements at #1 and #3 above, between #5
and #7, and between #9 and #11. For conceptual simplicity, lets take
those as differences between the averaged values. (What _kind_ of
averages may also be up for grabs; the median of each set of 42 values
might be best, as being relatively uninfluenced by unexpected, and
perhaps unaccountable, extreme values for an individual.) These values
are in a Latin square structure that can be displayed thus: |
