Table 4: Analytic results.
Study population
|
|
||||
Spirometry Test |
Taxi drivers’ smokers |
Taxi drivers non-smoker
|
Employees smokers |
Employees non-smokers |
P-Value |
Participants/n |
140 |
60 |
90 |
30 |
|
FEV1 (%) average* |
79.55 |
80.32 |
83.88 |
91.64 |
< 0.05 |
FEV1/FVC average* |
0.78 |
0.81 |
0.84 |
0.86 |
< 0.05 |
Mean symptoms score* |
46.5 |
31.1 |
23.7 |
17.4 |
0.006 |