Table 3.

The odds ratios from the multivariable logistic models fitted to the prevalence of better-ear hearing disability based on Digit Triplet Test performance.

Factor		Odds ratio (95% confidence interval)
		Insufficient	Poor
Age	40–44	-	-
	45–49	1.2*** (1.1 – 1.3)	1.2 (1.0 – 1.5)
	50–54	1.5*** (1.4 – 1.7)	1.5*** (1.2 – 1.8)
	55–59	2.2*** (2.0 – 2.4)	2.4*** (1.9 – 2.9)
	60–64	3.3*** (3.1 – 3.6)	3.9*** (2.3 – 4.7)
	65–69	5.2*** (4.9 – 5.7)	7.5*** (6.2 – 9.0)
Sex	Female	-	-
	Male	0.9*** (0.8 – 0.9)	1.0 (0.9–1.1)
Ethnicity	White	-	-
	Non-white	3.2*** (3.1 – 3.4)	5.4** (4.9 – 5.9)
Socio-economic status	Medium-high socioeconomic status (>−1SD)	-	-
	Low socioeconomic status (<−1SD)†	1.5*** (1.4 – 1.6)	2.0*** (1.8 – 2.2)
Work noise exposure	No exposure	-	-
	Yes, for more than 5 years	1.5*** (1.4 – 1.6)	2.4*** (2.1 – 2.6)
	Yes, for around 1–5 years	1.3*** (1.1 – 1.4)	1.5*** (1.3 – 1.7)
	Yes, for less than a year	1.1 (1.0 – 1.1)	1.1 (1.0 – 1.4)
Music noise exposure	No exposure	-	-
	Yes, for more than 5 years	1.1* (1.0–1.2)	1.2* (1.0 – 1.4)
	Yes, for around 1–5 years	1.0 (1.0 – 1.1)	1.2 (1.0 – 1.4)
	Yes, for less than a year	1.0 (0.9 – 1.1)	1.4*** (1.2 – 1.7)

^***p < 0.001

^**p < 0.01

^*p < 0.05

^†Low socioeconomic status was defined as a Townsend deprivation index score lower than 1 standard deviation (SD) below the mean with reference to the general population of 40 to 69 year-olds; i.e. the most deprived 15% of the population.