Table 2.: Influence of Calculating FEV1% Predicted from Actual Height and Estimated Height on Severity Classification in COPD Patients
| GOLD Classification |
| 1999-2002 |
Measured FEV1
(Measured Height) |
Estimated FEV1 %
(Calculated Height) |
p Value |
| Stage I |
n=04 |
n=11 |
NS |
| Stage II |
n=63 |
n=57 |
| Stage III |
n=25 |
n=24 |
| Stage IV |
n=08 |
n=08 |
| GOLD Classification |
| 2007-2008 |
Measured FEV1 %
(Measured Height) |
Estimated FEV1 %
(Calculated Height) |
p Value |
| Stage I |
n=18 |
n=18 |
NS |
| Stage II |
n=44 |
n=43 |
| Stage III |
n=33 |
n=32 |
| Stage IV |
n=05 |
n=7 |