Table 2.
Comparisons of heart rate and blood pressure of workers in the case and control groups
| Groups | Sound pressure level (dB) | Parameters | Heart rate (bpm) | Systolic blood pressure (mmHg) | Diastolic blood pressure (mmHg) |
|---|---|---|---|---|---|
| Unexposed group (controls) | 53 | Start time | 75.19 ± 1.56 | 115.91 ± 0.70 | 76.92 ± 0.73 |
| Mid-shift | 76.94 ± 1.18 | 116.39 ± 0.79 | 77.11 ± 0.63 | ||
| P (paired t-test) | < 0.001 | 0.280 | 0.026 | ||
| Exposed group (cases) | 85-108 | Start time | 74.38 ± 1.20 | 115.63 ± 0.99 | 76.17 ± 0.84 |
| Mid-shift | 88.96 ± 6.80 | 127.31 ± 5.92 | 85.44 ± 3.74 | ||
| P (paired t-test) | < 0.001 | < 0.001 | < 0.001 |