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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: J Occup Environ Med. 2018 Jul;60(7):e349–e355. doi: 10.1097/JOM.0000000000001319

Table 4.

Biologic Outcomes

Test Company Driver
N=218		 Independent Driver
N=48		 p-value
Systolic blood pressure (mmHg; mean, (std dev); median, range) 134.3 (14.4); 132 (110, 190) 138.3 (18.0); 139 (98, 190) 0.16
Diastolic blood pressure (mmHg; mean, (std dev); median, range) 85.8 (9.7); 86 (62, 120) 84.1 (12.7); 84 (58, 110) 0.40
BMI (mean, (std dev); median, range) 32.7 (5.9); 32 (19, 50) 33.0 (6.0); 33 (23, 55) 0.77
Total cholesterol (mg/dL; mean, (std dev); median, range) 167 (37); 161 (100, 272) 174.0 (38); 172 (100, 259) 0.25
HgbA1C (%; mean, (std dev); median, range) 6.1 (0.8); 6.0 (4.4, 9.3) 6.1 (1.1); 5.8 (5.0, 9.7) 0.91
Number (%) Number (%) P-value
Hepatitis C antibody
Positive 7 (3.2) 0 0.36
Negative 211 (96.8) 48 (100)
Hepatitis B surface antigen
Positive 1 (0.5) 0 >0.99
Negative 217 (99.5) 48