Table 2:

Adjusted odds of delayed presentation to the emergency department (i.e., presentation more than six hours after onset of chest pain) among 4403 patients with acute myocardial infarction (AMI)

Predictor variable	Adjusted OR (95% CI)	p value
Marital status (reference = single)
Married or common law	0.46 (0.30–0.71)	< 0.001
Separated or divorced	0.90 (0.53–1.52)	0.69
Widowed	0.65 (0.41–1.03)	0.07
Age (per decade increase)	1.20 (1.15–1.26)	< 0.001
Male sex	1.05 (0.84–1.32)	0.67
Ethnic origin (reference = general)
Chinese	0.61 (0.31–1.19)	0.15
South Asian	0.50 (0.32–0.78)	0.002
Income quintile (reference = quintile 1 [lowest])
Income quintile 2	0.92 (0.70–1.20)	0.53
Income quintile 3	0.97 (0.73–1.28)	0.81
Income quintile 4	0.61 (0.45–0.82)	0.001
Income quintile 5	0.66 (0.49–0.89)	0.006
Living with someone	1.47 (1.06–2.04)	0.020
Called an ambulance	0.42 (0.34–0.51)	0.001
Shortness of breath	1.14 (0.93–1.39)	0.21
Previous AMI	1.02 (0.80–1.31)	0.87
Previous PCI or CABG	0.91 (0.67–1.23)	0.54
History of hypertension	1.19 (0.97–1.46)	0.10
History of diabetes mellitus	1.19 (0.96–1.48)	0.11
History of dyslipidemia	0.84 (0.68–1.03)	0.09
Smoker (reference = current smoker)
Never	1.01 (0.78–1.31)	0.94
Former	0.85 (0.65–1.12)	0.25
History of depression	1.61 (1.18–2.20)	0.003
Weekend arrival	1.15 (0.95–1.41)	0.16
Arrival time (reference = daytime [8:01 am to 4 pm])
Evening (4:01 pm to midnight)	0.78 (0.62–0.97)	0.030
Night (12:01 am to 8 am)	0.61 (0.49–0.76)	< 0.001

Note: CABG = coronary artery bypass graft, CI = confidence interval, OR = odds ratio, PCI = percutaneous coronary intervention.