Table 4 Subgroup analysis by sex for the associations between the prevalence of hypertension and occupational exposure status and classification of occupational noise exposure combined with BHFTA

Occupational noise status

0.358

Male

 Non–exposed

1

1

 Exposed

1.29

1.22,1.37

< 0.001

1.51

1.42,1.60

< 0.001

Female

 Non–exposed

1

1

 Exposed

1.28

1.15,1.41

< 0.001

1.49

1.34,1.67

< 0.001

Classification of occupational noise exposure combined with BHFTA

0.003

Male

 Occupational noise non–exposed

 with BHFTA normal

1

1

 Occupational noise exposed

 with BHFTA normal

1.22

1.15,1.29

< 0.001

1.49

1.41,1.59

< 0.001

 Occupational noise exposed

 with BHFTA elevated

1.86

1.74,1.97

< 0.001

1.57

1.48,1.68

< 0.001

Female

 Occupational noise non–exposed

 with BHFTA normal

1

1

 Occupational noise exposed

 with BHFTA normal

1.25

1.13,1.39

< 0.001

1.49

1.34,1.66

< 0.001

 Occupational noise exposed

 with BHFTA elevated

1.87

1.66,2.11

< 0.001

1.59

1.40,1.80

< 0.001