Table 2: Characteristics
of the study population distributed on occupational groups.
|
|
Demolition workers |
Insulators |
Carpenters |
Hospital porters |
Total |
|
|
|
N = 141 |
N = 149 |
N = 296 |
N = 313 |
N = 899 |
P-value |
|
Age, years, Mean (SD) |
44.2 (7) |
49.9 (7) |
45.3 (7) |
48.5 (7) |
47.0 (7) |
< 0.0001 |
|
Height, cm, Mean (SD) |
180.8 (7) |
179.8 (7) |
181.3 (7) |
181.0 (6) |
180.9 (7) |
0.1709 |
|
Weight, kg, Mean (SD) |
87.8 (15) |
86.8 (14) |
86.6 (12) |
89.0 (15) |
87.7 (14) |
0.1734 |
|
BMI*, Mean (SD) |
26.9 (4) |
26.8 (4) |
26.3 (3) |
27.1 (4) |
26.8 (4) |
0.0797 |
|
≤ 49 years, n (%) |
108 (77) |
63 (42) |
203 (69) |
153 (49) |
527 (59) |
< 0.0001 |
|
≥ 50 years, n (%) |
33 (23) |
87 (58) |
93 (31) |
160 (51) |
373 (41) |
< 0.0001 |
|
Current smokers, n (%) |
79 (56) |
56 (38) |
64 (22) |
100 (32) |
299 (34) |
0.0018 |
|
Former smokers, n (%) |
37 (26) |
54 (36) |
92 (32) |
110 (36) |
293 (33) |
< 0.0001 |
|
Never smokers, n (%) |
24 (17) |
39 (26) |
135 (46) |
100 (32) |
298 (33) |
< 0.0001 |
|
Pack-year of tobacco |
|
|
|
|
|
|
|
None, n (%) |
24 (17) |
39 (26) |
135 (46) |
100 (32) |
298 (33) |
< 0.0001 |
|
< 20, n (%) |
32 (23) |
44 (30) |
66 (23) |
93 (30) |
235 (27) |
|
|
≥ 20, n (%) |
81 (59) |
66 (44) |
91 (31) |
115 (37) |
353 (40) |
|
|
GOLD 1 (FEV1 ≥ 80 % predicted), n (%) |
10 (7) |
14 (9 ) |
19 (6) |
21 (7) |
64 (7) |
0.3050 |
|
GOLD 2 (50 % ≤ FEV1 < 80 % predicted), n (%) |
9 (6) |
7 (5) |
6 (2) |
14 (5) |
36 (4) |
|
|
GOLD 3 (30 % ≤ FEV1 < 50 % predicted), n (%) |
2 (1.4) |
0 (0) |
1 (0.3) |
3 (1.0) |
6 (0.7) |
|
|
GOLD 4 (FEV1 < 30 % predicted), n (%) |
0 (0) |
0 (0) |
0 (0) |
2 (0.6) |
2 (0.2) |
|
*BMI is calculated as weight
/height2 (kg/m2)