Table 4.

Odds ratio of CV event risk to occupational factors

CV event risk	Unadjusted		Adjusted*
	OR	95% CI	OR	95% CI
Medium
Shift pattern (double vs alternative)	0.86	(0.52-1.42)	0.83	(0.53-1.38)
PDA ratio (<0.5 vs ≥0.5)	1.28	(0.85-1.94)	1.31	(0.86-1.98)
High
Shift pattern (double vs alternative)	2.87	(1.50-5.51)	2.58	(1.33-5.00)
PDAR (<0.5 vs ≥0.5)	2.44	(1.32-4.58)	2.18	(1.15-4.14)

*Backward stepwise multinominal logistic regression, adjusted for employed type, shift duty pattern and PDAR.

PDAR, professional driving duration/age ratio.