Table 4. Univariate analyses of age and sex in the minimal hearing loss group compared to the normal hearing group.
| Age | Frequency | Weighted Frequency | Average (years) | P-value | OR | 95% CI |
| Classifications | ||||||
| Total | 15,569 | 34,282,747 | 35.16 | - | - | - |
| Normal hearing (ref) | 8,511 | 20,908,897 | 32.52 | ref | ref | ref |
| Minimal hearing loss | 7,058 | 13,373,850 | 51.62 | < 0.0001* | 1.098 | 1.093–1.102 |
| USHL | 2,443 | 5,009,016 | 46.19 | < 0.0001* | 1.074 | 1.067–1.082 |
| Slight USHL | 1,949 | 4,010,785 | 46.67 | < 0.0001* | 1.078 | 1.070–1.087 |
| Mild to profound USHL | 494 | 998,231 | 44.24 | < 0.0001* | 1.064 | 1.046–1.082 |
| BSHL | 3,426 | 5,724,301 | 57.91 | < 0.0001* | 1.135 | 1.124–1.146 |
| Minimal BSHL | 1,868 | 3,323,898 | 54.36 | < 0.0001* | 1.120 | 1.109–1.131 |
| Mild BSHL | 1,558 | 2,400,402 | 62.81 | < 0.0001* | 1.180 | 1.158–1.203 |
| HFSHL | 1,189 | 2,640,533 | 48.3 | < 0.0001* | 1.096 | 1.089–1.104 |
| Unilateral HFSHL | 528 | 1,130,163 | 51.19 | < 0.0001* | 1.114 | 1.102–1.126 |
| Bilateral HFSHL | 661 | 1,510,370 | 46.14 | < 0.0001* | 1.08 | 1.071–1.090 |
| Sex | Frequency | Weighted Frequency | Weighted Percent (%) | P-value | OR | 95% CI |
| Classifications | ||||||
| Total | ||||||
| male | 6,751 | 17,226,420 | 50.25 | - | - | - |
| female | 8,818 | 17,056,327 | 49.75 | |||
| Normal hearing (ref) | ||||||
| male | 3,310 | 9,798,698 | 46.86 | ref | ref | ref |
| female | 5,201 | 11,110,198 | 53.14 | |||
| Minimal hearing loss | ||||||
| male (ref) | 3,441 | 7,427,722 | 55.54 | < 0.0001* | 1.416 | 1.307–1.534 |
| female | 3,617 | 5,946,128 | 44.46 | |||
| USHL | ||||||
| male (ref) | 1,059 | 2,495,340 | 49.82 | 0.1479 | 1.126 | 0.975–1.299 |
| female | 1,384 | 2,513,676 | 50.18 | |||
| Slight USHL | ||||||
| male (ref) | 861 | 2,045,206 | 50.99 | 0.0516 | 1.18 | 1.000–1.392 |
| female | 1,088 | 1,965,579 | 49.01 | |||
| Mild to profound USHL | ||||||
| male (ref) | 198 | 450,134 | 45.09 | 1.000 | 0.931 | 0.659–1.316 |
| female | 296 | 548,097 | 54.91 | |||
| BSHL | ||||||
| male (ref) | 1,472 | 2,740,396 | 47.87 | 1.000 | 1.041 | 0.923–1.175 |
| female | 1,954 | 2,983,904 | 52.13 | |||
| Minimal BSHL | ||||||
| male (ref) | 792 | 1,615,053 | 9.01 | 1.000 | 1.072 | 0.900–1.276 |
| female | 1,076 | 1,708,845 | 9.57 | |||
| Mild BSHL | ||||||
| male (ref) | 680 | 1,125,343 | 6.28 | 1.000 | 1.001 | 0.831–1.206 |
| female | 878 | 1,275,059 | 7.14 | |||
| HFSHL | ||||||
| male (ref) | 910 | 2,191,985 | 83.01 | < 0.0001* | 5.541 | 4.478–6.857 |
| female | 279 | 448,548 | 16.99 | |||
| Unilateral HFSHL | ||||||
| male (ref) | 436 | 984,304 | 87.09 | < 0.0001* | 7.651 | 5.138–11.392 |
| female | 92 | 145,859 | 12.91 | |||
| Bilateral HFSHL | ||||||
| male (ref) | 474 | 1,207,681 | 79.96 | < 0.0001* | 4.524 | 3.396–6.027 |
| female | 187 | 302,689 | 20.04 | |||
An asterisk (*) indicates a significant difference (P < 0.05).
USHL, unilateral sensorineural hearing loss; BSHL, bilateral sensorineural hearing loss; HFSHL, high-frequency sensorineural hearing loss; CI, confidence interval; OR, odds ratio