Table 2.
The univariate analysis of comparison of variables in low-frequency and high-frequency PTA groups.
| Variable | N (%)/Mean ± SD | Low-frequency PTA | High-frequency PTA | ||
|---|---|---|---|---|---|
| β (95% CI) | P value | β (95% CI) | P value | ||
| Sex (female) | 427 (50.29%) | − 0.13 (− 1.25, 0.98) | 0.8138 | − 7.38 (− 9.32, − 5.44) | < 0.0001 |
| Age (years) | 43.06 ± 14.04 | 0.25 (0.21, 0.29) | < 0.0001 | 0.58 (0.51, 0.64) | < 0.0001 |
| BMI (kg/m2) | 28.99 ± 6.94 | 0.05 (− 0.03, 0.14) | 0.2143 | 0.21 (0.06, 0.37) | 0.0073 |
| Education level (above high school) | 521 (61.37%) | − 3.63 (− 5.19, − 2.07) | < 0.0001 | − 7.33 (− 10.15, − 4.51) | < 0.0001 |
| Firearm noise exposure | 297 (34.98%) | 0.04 (− 1.08, 1.17) | 0.9388 | 3.64 (1.63, 5.64) | 0.0004 |
| Occupational noise exposure | 278 (32.74%) | 1.70 (0.51, 2.88) | 0.0052 | 5.27 (3.16, 7.37) | < 0.0001 |
| Recreational noise exposure | 105 (12.37%) | 2.19 (0.59, 3.78) | 0.0073 | 9.27 (6.47, 12.07) | < 0.0001 |
| Cotinine (≥ 10 ng/mL) | 205 (24.15%) | 2.18 (0.88, 3.47) | 0.0010 | 3.06 (0.73, 5.38) | 0.0101 |
| Diabetes | 94 (11.07%) | 3.14 (0.99, 5.30) | 0.0044 | 8.38 (4.53, 12.23) | < 0.0001 |
| Hypertension | 262 (30.86%) | 2.16 (0.92, 3.41) | 0.0007 | 6.36 (4.16, 8.57) | < 0.0001 |
| 3U (umol/L) | 0.95 ± 2.27 | 0.11 (− 0.12, 0.34) | 0.3524 | 0.55 (0.14, 0.95) | 0.0089 |
| 7U (umol/L) | 23.20 ± 41.96 | 0.01 (− 0.00, 0.02) | 0.0689 | 0.04 (0.01, 0.06) | 0.0019 |
| 137U (umol/L) | 2.91 ± 4.08 | 0.17 (0.04, 0.31) | 0.0100 | 0.26 (0.02, 0.49) | 0.0364 |
| 17X (umol/L) | 27.31 ± 30.28 | 0.03 (0.01, 0.05) | 0.0036 | 0.07 (0.04, 0.11) | < 0.0001 |
| 137X (umol/L) | 7.02 ± 9.04 | 0.10 (0.04, 0.16) | 0.0011 | 0.20 (0.09, 0.31) | 0.0003 |
| AAMU (umol/L) | 101.60 ± 140.28 | 0.00 (0.00, 0.01) | 0.0105 | 0.01 (0.01, 0.02) | 0.0004 |