Question: What’s the difference between the two graphs below?
The answer may be a little more complicated than it first appears.
As you can see, both of these graphs have exactly the same values for every meridian. In fact, both of these graphs were produced from the same exam. But one shows all meridians in the normal range, and the other shows a deficient Small Intestine and a split Large Intestine. What gives?
The answer is proportion.
The graph above is set for what we call “fixed” interpretation values. This means the normal range is set for 15 points above or below the mean, and a 25-point difference makes a split. These values of 15 and 25 work well when your mean is around 100.
But when your mean is low, as in this example, you’ll almost never see anything but green if you use fixed values. In this case, the mean is 29–and therefore the lower end of the normal range is 14. You’re simply not going to see many values below 14, so there’s almost no chance of seeing any deficiency. Similarly, a split of 25 is extremely unlikely.
This is why we developed the proportional measurement system. Under this system, the normal range and split value are both dependent on the mean. If the mean is low, the normal range and split value are smaller. In a case like the one above, the proportional interpretation brings out the true findings. We recommend you use proportional values for all your graphs.
How To Select Proportional Interpretation
To activate this feature, go to the preferences section of AcuGraph by selecting “Preferences” under the AcuGraph menu, or selecting the hammer/wrench icon in the top right of the AcuGraph window. Next, select “Measurement” and choose the exam type you are adjusting–Source, Tsing, or Ryodoraku. Then simply select “Proportional” under the “Calculations” section and hit “Save.”
Repeat this procedure for each of the exam types, and you’ll be all set to get all the information each exam has to offer.
Need a little more help with that? Click on the picture below to watch a video tutorial about proportional interpretation and how to set your AcuGraph.
Please don’t forget to add your comments and questions!
Until next week,