From: Road traffic noise frequency and prevalent hypertension in Taichung, Taiwan: A cross-sectional study
Frequency component | Categorical exposure | Median | Model 1a | Model 2b | Model 3c | Model 4d | Model 5e |
---|---|---|---|---|---|---|---|
OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |||
31.5 Hz | HEG vs. LEG | 27 dB | 1.33 (0.73-2.43) | 1.17 (0.61-2.27) | 1.08 (0.55-2.12) | 0.52 (0.22-1.21) | 1.05 (0.52-2.12) |
63 Hz | HEG vs. LEG | 41 dB | 1.82 (0.97-3.42) | 2.20 (1.10-4.39)f | 2.14 (1.06-4.31)f | 1.19 (0.41-3.43) | 2.77 (1.17-6.52)f |
125 Hz | HEG vs. LEG | 49 dB | 2.09 (1.08-4.02)f | 2.53 (1.24-5.18)f | 2.51 (1.21-5.21)f | 1.73 (0.67-4.49) | 4.08 (1.57-10.63)f |
250 Hz | HEG vs. LEG | 54 dB | 1.48 (0.80-2.74) | 1.56 (0.79-3.05) | 1.50 (0.75-2.98) | 0.70 (0.27-1.78) | 1.52 (0.73-3.16) |
500 Hz | HEG vs. LEG | 58 dB | 1.32 (0.73-2.39) | 1.42 (0.73-2.75) | 1.36 (0.69-2.67) | 0.72 (0.31-1.67) | 1.34 (0.68-2.66) |
1000 Hz | HEG vs. LEG | 61 dB | 1.73 (0.95-3.15) | 2.08 (1.06-4.06)f | 1.99 (1.01-3.93)f | 1.40 (0.64-3.05) | 1.98 (1.00-3.92)f |
2000 Hz | HEG vs. LEG | 59 dB | 1.52 (0.84-2.76) | 1.76 (0.91-3.41) | 1.73 (0.89-3.39) | 1.17 (0.54-2.56) | 1.73 (0.87-3.43) |
4000 Hz | HEG vs. LEG | 56 dB | 1.67 (0.88-3.18) | 1.75 (0.87-3.51) | 1.74 (0.85-3.56) | 1.22 (0.55-2.71) | 1.73 (0.84-3.57) |
8000 Hz | HEG vs. LEG | 49 dB | 1.63 (0.88-3.01) | 1.68 (0.86-3.29) | 1.71 (0.86-3.39) | 1.52 (0.75-3.04) | 1.72 (0.87-3.42) |