Table 3: Pulmonary function tests (PFTs) results in smokers with COPD (Clinical diagnosis and GOLD Criteria) and ethnic differences

- Clinician Diagnosis GOLD Criteria
Caucasian (n=290) Hispanic (n=109) Caucasian (N=295) Hispanic
(N=55)
Mean ± SD Mean ± SD Mean ± SD Mean ± SD
FVC pre-BD Actual 2.49 ± 1.00 2.38 ± 0.80 2.49 ± 1.02 2.40 ± 0.80
FVC post-BD Actual 2.59 ± 1.04 2.45 ± 0.79 2.64 ± 1.05 2.53 ± 0.76
FEV1 pre-BD Actual 1.47 ± 0.76* 1.67 ± 0.64* 1.28 ± 0.64 1.40 ± 0.55
FEV1 post-BD Actual 1.54 ± 0.78* 1.73 ± 0.64* 1.36 ± 0.66 1.45 ± 0.52
TLC Actual 5.34 ± 1.41* 4.83 ± 1.23* 5.59 ± 1.49 5.44 ± 1.08
DLCO Actual 15.92 ± 6.54 16.51 ± 5.84 14.43 ± 5.89 14.60 ± 5.54
FEV1 post-BD % Change 5.76% ± 11.62% 4.64% ± 9.55% 7.2% ± 11.4% 5.4% ± 11.2%
FEV1 post-BD % Change (Reversible)^ 62 (21.4%) 18 (16.5%) 80 (27.1%) 9 (16.4%)

BD: bronchodilator; FVC: forced vital capacity; FEV: forced expiratory volume; TLC: total lung capacity; DLCO: diffusing capacity of carbon monoxide; COPD: chronic obstructive pulmonary disease; GOLD: Global Initiative for Chronic Obstructive Lung Disease
^ FEV1 post-BD % change of >12% is considered reversible.
*p-value <0.05