Pre-hospital delay in patients with myocardial infarction: an observational study in a tertiary care hospital of northern Bangladesh

Table 3 Characteristics associated with prolonged pre-hospital delay in patients with myocardial infarction in multivariate logistic regression

Characteristics	aOR (95% CI for aOR)	P-value
Age category
≤ 40 years Vs > 60 years^R	2.43 (0.73–8.12)	0.149
41–60 years Vs > 60 years^R	0.44 (0.21–0.93)	0.032
Family income
Lower Vs Higher^R	5.74 (0.89–37.06)	0.066
Middle Vs Higher^R	14.22 (2.15–94.17)	p < 0.001
Residence
Rural Vs Urban^R	1.78 (0.73–4.34)	0.204
Distance of primary care center
≤ 5 km Vs > 5 km^R	0.42 (0.12–0.90)	0.026
Predominant clinical symptom
Chest pain Vs Symptoms other than chest pain^R	0.15 (0.05–0.48)	p < 0.001
Behavior after onset of symptoms
Misinterpreting the nature of pain Vs Suspected as MI^R	1.46 (0.47–4.59)	0.515
Did not consider the symptoms to be serious Vs Suspected as MI^R	17.81 (5.92–53.48)	p < 0.001
First medical action after onset of symptoms
Self-medication Vs Visiting qualified doctor^R	1.50 (0.42–5.37)	0.534
Visiting non-qualified practitioner Vs Visiting qualified doctor^R	1.03 (0.43–2.48)	0.943
Mode of admission
Referred from government hospital Vs Direct admission^R	4.45 (2.03–9.74)	p < 0.001
Referred from private hospital Vs Direct admission^R	98.67 (11.87–820.34)	p < 0.001
Medical history/ risk factors
Diabetes mellitus (No Vs Yes^R)	1.02 (0.48–2.16)	0.961
Previous history of chest pain (No Vs Yes^R)	1.15 (0.53–2.47)	0.727
Family history of MI (No Vs Yes^R)	2.65 (1.24–5.71)	0.012

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