Table 4.
Regression results and OR for prediction systolic hypertension in study groups in the presence and absence of the meaningful confounding variables (age and regular exercise of participants)*
| Variable | B | SE | p-value | OR | 95% CI for OR | ||
|---|---|---|---|---|---|---|---|
| Lower | Upper | ||||||
| Systolic hypertension | Group 1 | 0.271 | |||||
| Group 2 | 0.096 | 1.071 | 0.928 | 1.101 | 0.135 | 8.976 | |
| Group 3 | 0.256 | 1.248 | 0.828 | 0.774 | 0.067 | 8.938 | |
| Group 4 | 0.734 | 1.046 | 0.483 | 2.083 | 0.268 | 16.169 | |
| Systolic | Group 1 | 0.037 | |||||
| hypertension | Group 2 | 0.782 | 1.108 | 0.480 | 2.187 | 0.249 | 19.180 |
| Group 3 | 0.149 | 1.290 | 0.908 | 1.160 | 0.093 | 14.543 | |
| Group 4 | 1.710 | 1.104 | 0.121 | 5.528 | 0.635 | 48.127 | |
| Age | 0.100 | 0.026 | 0.001 | 1.106 | 1.050 | 1.164 | |
| Regular exercise | 0.447 | 0.526 | 0.395 | 0.639 | 0.228 | 1.791 | |
CI: confidence interval; OR: Odds ratio; SE: standard error
*
Non-smokers exposed to noise <85 DB (Group 1); Smokers exposed to noise <85 DB (Group 2); non-smokers exposed to noise ≥85 DB (Group 3); smokers exposed to noise ≥85 DB (Group 4)