Table 3 Risk of prevalent hypertension associated with occupational exposure status and classification of occupational noise exposure combined with BHFTA

Occupational noise status

 Non–exposed

1

1

 Exposed

1.32

1.25,1.39

< 0.001

1.50

1.42,1.58

< 0.001

Classification of occupational noise exposure combined with BHFTA

 Occupational noise non–exposed with BHFTA normal

1

1

 Occupational noise exposed with BHFTA normal

1.25

1.19,1.31

< 0.001

1.48

1.41,1.56

< 0.001

 Occupational noise exposed with BHFTA elevated

1.97

1.87,2.08

< 0.001

1.54

1.46,1.63

< 0.001