Table 2 Odds ratios (95% CI) of hearing loss in the exposure group.

From: Hearing loss in humans drinking tube well water with high levels of iron in arsenic–polluted area

 

Hearing loss

1 kHz

4 kHz

8 kHz

12 kHz

(≥10 dB)

(≥10 dB)

(≥25 dB)

(≥40 dB)

Model 1

Control

Reference

Reference

Reference

Reference

Exposure

1.646 (0.619, 4.380)

7.592*** (2.745, 20.994)

13.800*** (4.548, 41.875)

13.109*** (4.696, 36.593)

P value

0.318

<0.001

<0.001

<0.001

Model 2

Control

Reference

Reference

Reference

Reference

Exposure

0.854 (0.243, 2.994)

3.236 (0.962, 10.893)

6.994** (1.959, 24.974)

8.574** (2.507, 29.327)

P value

0.805

0.058

0.003

<0.001

  1. Abbreviation: CI, confidence interval.
  2. Reference: OR = 1.
  3. Model 1: preliminary model without adjustment.
  4. Model 2: adjustments for age, gender, smoking, and BMI, which have been reported to affect hearing.
  5. P value was determined by binary logistic regression analysis, **P < 0.01, ***P < 0.001.
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