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Table 3 Blood pressure and heart rate in office workers and truck drivers

From: Effects of particulate air pollution on blood pressure in a highly exposed population in Beijing, China: a repeated-measure study

 

Office Workers

Truck Drivers

 
 

N

Mean ± SD

N

Mean ± SD

p-value

Unadjusted

     

Systolic blood pressure (mmHg)

120

115.3 ± 11.7

120

116.3 ± 13.3

0.56

Diastolic blood pressure (mmHg)

120

77.6 ± 8.3

120

80.2 ± 9.7

0.03

Mean Arterial pressure (mmHg)

120

90.2 ± 8.6

120

92.3 ± 10.5

0.10

Pulse pressure (mmHg)

120

37.7 ± 9.0

120

36.1 ± 7.4

0.13

Heart Rate (beats/min)

120

78.3 ± 10.4

120

79.3 ± 10.9

0.49

Adjusted for age, BMI, pack-years, number of cigarettes and tea consumption during the time of the study, usual alcohol drinking, work hours/week, and day of the week a

Systolic blood pressure (mmHg)

120

118.9 ± 1.7

120

115.4 ± 1.5

0.14

Diastolic blood pressure (mmHg)

120

79.9 ± 1.2

120

79.2 ± 1.1

0.70

Mean Arterial pressure (mmHg)

120

92.8 ± 1.2

120

91.2 ± 1.1

0.36

Pulse pressure (mmHg)

120

39.3 ± 1.2

120

36.3 ± 1.1

0.07

Heart Rate (beats/min)

120

78.9 ± 1.5

120

79.6 ± 1.3

0.72

  1. aOffice workers and truck drivers were matched by sex and smoking (never, former, current). Adjusted means were computed by holding covariates fixed at their average values.