Table 1 Demographic characteristics of the study population

Sample size

52^a

 Morning and afternoon

29

 Afternoon and evening

23

Age (years)

40.91 ± 12.22

Welding time (hours/month)

33.06 ± 25.51

BMI (kg/m²)

28.43 ± 5.41

Weight (kg)

89.53 ± 17.89

Height (m)

1.77 ± 0.08

 Male

50

 Female

1

 Caucasian

43

 African American

4

 Asian

2

 Hispanic

2

 Yes

21

 No

30

 Diabetes

4

 High blood pressure

5

 Irregular heart arrhythmia

2

 High cholesterol hyperlipidemia

7