Table 1 Clinicopathological characteristics of control and welder patients.
From: Role of metal oxide nanoparticles in histopathological changes observed in the lung of welders
Controls | Welders | P value | |
|---|---|---|---|
(n = 21) | (n = 21) | ||
Mean age (years ± SD) | 58.6 ± 10.8 | 58.5 ± 10.7 | ns |
Gender | |||
Female | 6 (28.6%) | 1 (4.8%) | 0.038 |
Male | 15 (71.4%) | 20 (95.2%) | ns |
Tobacco smoking | |||
Smoking status | ns | ||
Current smokers | 9 (43.0%) | 6 (28.6%) | |
Former smokers | 9 (43.0%) | 12 (57.1%) | |
Never smokers | 3 (14.0%) | 3 (14.3%) | |
Cumulative consumption (P-Y ± SD) | 24.6 ± 29.0 | 22.2 ± 15.2 | ns |
Age at onset (years ± SD) | 16.8 ± 3.4 | 18.3 ± 4.2 | ns |
Age at cessation (years ± SD) | 51.6 ± 14.0 | 48.8 ± 11.2 | ns |
Duration (years ± SD) | 32.6 ± 16.7 | 33.7 ± 10.3 | ns |
Duration since cessation (years ± SD) | 5.7 ± 9.3 | 8.2 ± 10.4 | ns |
Welding fumes exposure | - | ||
Positive occupational questionnaire | 0 | 21 | |
Age at onset (years ± SD) | - | 19.9 ± 7.6 | |
Age at cessation (years ± SD) | - | 48.2 ± 9.9 | |
Duration (years ± SD) | - | 27.0 ± 9.2 | |
Duration since cessation (years ± SD) | - | 9.2 ± 10.4 |