Table 4.

Multinomial logistic regression models of audiometric phenotypes.

Variables	Refer to normal hearing
(OR [95% CI])	4–6 kHz sharp-notched	4–6 kHz flat-notched	3–8 kHz notched	1–8 kHz notched
Age (per years)	1.09 (1.08–1.09)	1.10 (1.09–1.10)	1.16 (1.15–1.17)	1.23 (1.22–1.25)
CNE (per dB[A])	1.01 (1.01–1.01)	1.00 (1.00–1.01)	1.02 (1.01–1.02)	1.04 (1.03–1.05)
Male sex	2.76 (2.27–3.35)	1.72 (1.44–2.05)	9.63 (6.81–13.63)	6.44 (4.25–9.75)
Hearing difficulty (self-reported yes)	0.92 (0.80–1.06)	1.06 (0.92–1.22)	0.91 (0.77–1.08)	1.36 (1.10–1.67)
Tinnitus (self-reported yes)	1.03 (0.91–1.17)	1.19 (1.04–1.35)	1.53 (1.32–1.78)	1.84 (1.51–2.24)
HPD use ≥4 h/work-day	0.84 (0.74–0.95)	0.86 (0.75–0.98)	0.77 (0.65–0.90)	0.76 (0.59–0.97)
Earphone use ≥1 h/day	0.9 (0.81–1.01)	1.10 (0.97–1.23)	1.07 (0.93–1.22)	1.01 (0.84–1.22)
Tobacco consumption ≥10 cigarettes/day	1.17 (1.03–1.32)	1.10 (0.97–1.25)	1.26 (1.09–1.45)	1.33 (1.09–1.62)
Alcohol consumption ≥50 g/day	1.51 (1.32–1.72)	1.27 (1.11–1.47)	1.54 (1.32–1.8)	1.25 (1.02–1.54)

Reference variables: Sex, females; Hearing difficulty, self-reported no; Tinnitus, self-reported no; HPD use, <4 h/work day; Earphone use, <1 h/day; Tobacco consumption, <10 cigarettes/day; Alcohol consumption, <50 g/day.

Bold type: P < 0.05.

OR, odds ratio; CI, confidence interval; BMI, body mass index; CNE, cumulative noise exposure; HPD, hearing protective device.