Nutrition Assistant Sample Manual Chapter 8

User Manual Sampler

Chapter 8 Knee Height Estimate of Height ____________________________________________________________________________________________

The "Knee Height Est." screen below (Figure 8.1) is for estimating a person's height based on "knee height" measurement.
This estimation technique is useful for people who are bedridden or otherwise cannot stand for a normal height measurement. Knee height is usually measured with "knee height" calipers. Additionally, this screen can estimate a person’s weight based on estimated height and mid-arm circumference measurement..
You access this screen by selecting the "KH" button on the "IBW/ BMI" screen.

Figure 8.1 - Knee Height Est.

Screen How to Use This Screen:

1) Sex and age fields will normally be filled in based on entries on a previous screen. If not then enter that data here.
2) Enter the knee height measurement.
3) Check Black Heritage or Hispanic button if appropriate.
4) The estimated height will show on line 5.
5) If you have an estimated height showing and you have a mid-arm circumference measurement you may enter it (on line 8) and the screen will show an estimated weight (on line 10). If you wish this estimated weight to be used as the person's "actual" weight then check the box on line 11.

Field / Line Explanations
Line 0: See Chapter 3 "The Way Things Work” for details on the standard screen buttons .
Line 1: "Sex" field. Change the gender / sex by tapping the "M" or "F" button to the right of the field.
"Age" field. Enter or change the age by entering the age directly or by tapping the "yrs" button to access the "Age from Birthdate" screen.
Line 3: "Knee Height" field. Enter the knee height measurement in this field. To change entered values’ units tap the displayed unit button.
"Black Herit." & "Hispanic" check boxes. The calculation for height estimation based on knee height differs for individuals of Hispanic and Black heritage. If no box is checked Caucasian data is used. Check the appropriate box if applicable.
Line 5: "Estimated Ht" field. Estimated height based on knee height, sex, age, and heritage will show when available.
Line 8: "Mid Arm Circ" field. The "Mid-arm circumference" field is used to estimate a person's weight. Note that estimated weight based on mid-arm circumference is also dependent on an estimated height being available.
Line 10: "Estimated Wt" field. Estimated weight based on mid-arm circumference and estimated height fields.
Line 11: "Use Estimate and 'Actual Weight'" checkbox. If you want to use the "Estimated Wt" as the person's "actual weight" for later calculations then check this checkbox.

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