Table 4

Association between baseline occupational noise exposure and stroke incidence stratified by education and sex

Low education (n=29 479)Medium/High education (n=48 910)Males (n=38 195)Females (n=40 194)
N casesHR (95% CI)N casesHR (95% CI)N casesHR (95% CI)N casesHR (95% CI)
Occupational noise
 <70 dB(A)1551Reference2975Reference2399Reference2127Reference
 70–74 dB(A)7181.02 (0.94 to 1.12)7370.98 (0.91 to 1.07)8691.04 (0.96 to 1.12)5860.97 (0.88 to 1.06)
 75–79 dB(A)4430.97 (0.87 to 1.08)3751.07 (0.96 to 1.20)6491.01 (0.92 to 1.11)1691.07 (0.92 to 1.26)
 80–84 dB(A)3450.97 (0.86 to 1.10)1721.03 (0.88 to 1.21)4391.03 (0.93 to 1.15)780.90 (0.72 to 1.13)
 ≥85 dB(A)2580.92 (0.80 to 1.06)2031.13 (0.97 to 1.31)4281.02 (0.91 to 1.14)331.05 (0.74 to 1.48)
  • *Adjusted for age, sex and calendar year at baseline (5-year period), marital status (married/cohabiting, single), area-income (quartiles), smoking status (never, former, current) and physical activity (low, medium, high).