Table 1
Individual characteristics of the studied population and their environmental exposure values.
| Demographic features | Index | |||
|---|---|---|---|---|
| Mean | SD | Min | Max | |
| Height (cm) | 175.95 | 6.32 | 156 | 195 |
| Weight (kg) | 77 | 8.89 | 58 | 110 |
| BMI (Kg/m2) | 24.89 | 2.69 | 18.5 | 34.6 |
| Age (year) | 32.82 | 5.61 | 20 | 46 |
| Work experience (year) | 10.17 | 5.13 | 1 | 20 |
| Exercise duration per week (hours) | 2.72 | 2.81 | 0 | 10 |
| Marital status | Single | *37 | **8.18 | |
| Married | *160 | **2.81 | ||
| Education | Diploma and lower | *165 | **83.7 | |
| Associate degree | *27 | **13.7 | ||
| Bachelor’s degree and higher | *5 | **2.5 | ||
| (dB)Leg | 87.32 | 2.35 | 83.45 | 94.31 |
| PSI | 2.55 | 0.65 | 1.28 | 4.25 |
| WBGT | 27.91 | 4.07 | 21.5 | 37.5 |
[i] * Number.
** Percentage.
Table 2
The correlation between the demographic variables and work ability index.
| Variable | Work ability | *P-Value | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Weak | Moderate | Good | Outstanding | |||||||
| Frequency | Percent | Frequency | Percent | Frequency | Percent | Frequency | Percent | |||
| Marital status | Married | 30 | 18.8 | 86 | 53.8 | 37 | 23.1 | 7 | 4.4 | 0.163 |
| Single | 5 | 13.5 | 17 | 45.9 | 10 | 27 | 5 | 13.5 | ||
| Age | 28–20 | 1 | 1.8 | 18 | 32.1 | 26 | 465.4 | 11 | 16.9 | 0.0001 |
| 37–29 | 23 | 22.8 | 60 | 59.4 | 17 | 16.8 | 1 | 1 | ||
| 46–38 | 11 | 28.2 | 24 | 61.5 | 4 | 10.3 | 0 | 0 | ||
| Employment status | Permanent contract | 23 | 88.5 | – | – | – | – | 3 | 11.5 | 0.05 |
| Fixed-term contract | 115 | 67.3 | – | – | – | – | 56 | 32.7 | ||
| Education | Diploma and lower | 29 | 17.6 | 85 | 51.5 | 40 | 24.2 | 11 | 6.7 | 0.078 |
| Associate degree and higher | 6 | 18.8 | 18 | 56.4 | 7 | 21.9 | 1 | 3.1 | ||
| Exercising | Yes | 9 | 8 | 57 | 50.4 | 37 | 32.7 | 10 | 8.8 | 0.0001 |
| No | 26 | 31 | 46 | 54.8 | 10 | 11.9 | 2 | 2.4 | ||
[i] * The Chi-square test.
Table 3
The correlation between the studied variables and work ability index.
| Variables | WAI | |
|---|---|---|
| The correlation coefficient | P-Value | |
| BMI | –0.128 | 0.078 |
| Dosimetric index | –0.402 | 0.001 |
| PSI | –0258 | 0.001 |
Table 4
Factors affecting work ability using the linear regression model in the studied subjects (n = 197).
| Variables | B | Std- Error | Beta | T | Sig |
|---|---|---|---|---|---|
| Age | –0.629 | –0.074 | –0.545 | –8.514 | 0.000 |
| Exercising time | 0.549 | 0.125 | 0.244 | 4.383 | 0.000 |
| Leq | –0.630 | 0.151 | –0.229 | –4.165 | 0.000 |
| PSI | –2.141 | 0.544 | –0.218 | –3.939 | 0.000 |
| Employment status | –2.527 | 1.267 | –0.132 | –0.934 | 0.048 |