Table 3.

Association between HAV exposure and VPT: increase of VPT (dB) per 10-fold increase in exposure (hour·m/s²)

Frequency	Dominant second finger (n=104)	Dominant fifth finger (n=102)	Non-dominant second finger (n=102)	Non-dominant fifth finger (n=103)
Hz	Unstandardised coefficient B (95% CI)	Unstandardised coefficient B (95% CI)	Unstandardised coefficient B (95% CI)	Unstandardised coefficient B (95% CI)
8	1.42 (0.57 to 2.27)*	1.47 (0.61 to 2.32)*	0.85 (0.02 to 1.67)*	0.97 (0.12 to 1.82)*
16	1.28 (0.53 to 2.03)*	1.40 (0.57 to 2.23)*	0.98 (0.08 to 1.87)*	0.94 (0.06 to 1.81)*
32	1.11 (0.37 to 1.84)*	1.14 (0.27 to 2.01)*	0.99 (0.14 to 1.84)*	0.53 (−0.40 to 1.46)
64	1.52 (0.50 to 2.55)*	1.83 (0.78 to 2.88)*	1.38 (0.31 to 2.45)*	1.10 (−0.06 to 2.26)
125	1.64 (0.59 to 2.69)*	2.16 (0.72 to 3.59)*	1.63 (0.35 to 2.91)*	1.59 (0.08 to 3.09)*
250	2.40 (1.09 to 3.61)*	2.39 (0.57 to 4.21)*	1.99 (0.46 to 3.51)*	2.26 (0.56 to 3.96)*
500	1.99 (0.56 to 3.43)*	2.76 (1.03 to 4.48)*	2.16 (0.42 to 3.90)*	2.07 (0.36 to 3.77)*

All associations were age adjusted, using categories of age <60 and ages 60–69 years.

*P≤0.05.

HAV, hand–arm vibration; VPT, vibration perception threshold.