Table 3 Fasting blood glucose and relative risk of hyperglycaemia in the study group.

From: Occupational noise exposure and its association with incident hyperglycaemia: a retrospective cohort study

Noise exposure group

n

FBG, mg/dl, mean (SD)

HG cases, n

Person-years

Incident rate

Crude RR (95% CI)

P value

Low (< 70 dBA)

364

90.9 ± 9.5

47

3149.7

1.49 × 10−2

1.00

—

Medium (70–85 dBA)

433

89.4 ± 12.1

51

2695.3

1.89 × 10−2

1.36(0.81–2.30)

0.246

High (>= 85 dBA)

108

92.9 ± 13.2b

21

965.9

2.17 × 10−2

1.44(0.96–2.16)

0.078

  

P = 0.001a

     
  1. CI, confidence interval; FBG, fasting blood glucose; HG, hyperglycaemia; RR, relative risk; SD, standard deviation. aKruskal-Wallis test between the three groups. bWilcoxon rank-sum test (p < 0.050) with the medium-exposure group.
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