Co-morbid depression is associated with poor work outcomes in persons with cardiovascular disease (CVD): A large, nationally representative survey in the Australian population

Table 6 Ordinal logistic regression model for the relationship between workplace absenteeism and disease group (employed participants) (n = 5499)

Category of days unable to work⁺	Unadjusted	Adjusted	Jack-knife	Confidence
	OR	OR±	Standard Error	intervals 95%
Condition
Neither CVD nor MDD	1.0	1.0
MDD only	2.7*	1.8*	0.2	1.4, 2.4
CVD only	1.0	1.0	0.2	0.6, 1.6
Co-morbid MDD & CVD	4.5*	3.0*	1.2	1.4, 6.6
CVD-MDD interaction		1.8	0.8	0.7, 4.6

+ 0 = 0 days per month (reference group), 1 = 1-4 days; 2 = 5 days per month or more; ± = Adjusted for: age, sex, marital status, education, smoking, area social disadvantage, self rated mental and physical health *p < 0.05; Post-estimation tests revealed good model specificity (linktest p = 0.45), and no violation of proportion odds assumption (p = 0.36)

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