About test, Quality grades, About test-quality grades – Welch Allyn CP 200 Spirometry Option - User Manual User Manual
Page 77
Directions for Use
Appendix D Predictive Norms, etc.
73
About Test-Quality Grades
Another type of feedback is the test-quality grade, as described in the following table.
If Print Quality Grades is enabled in the settings, a grade appears on printed reports and
also displays on screen when you view the values or interpretation of a completed test (as
described under
To learn how to enable or disable this setting, see
“Reviewing the Spirometry Print
Test-Quality
Grade
Number of Acceptable Efforts
Reproducibility
A
2 or more
Largest two FEV1 values match
≤ 100 mL.
Largest two FVC values match
≤ 100 mL.
B
2 or more
Largest two FEV1 values match > 100 and
≤ 150 mL.
C
2 or more
Largest two FEV1 values match > 150 and
≤ 200 mL.
D
1 or more
Largest two FEV1 values match > 200 mL.
F
None