Table 8. The logistic regression analysis of baseline factors on time distribution in major vs. minor event incidence of STEMI.

Baseline factors	Hourly distribution, 03:31–04:30 vs. 07:31–08:30		Monthly distribution, November vs. April		Seasonal distribution, Autumn vs. Spring
	OR(95% CI)	p-value	OR(95% CI)	p-value	OR(95% CI)	p-value
Age, years	0.774(0.475–1.261)	0.303	0.980(0.764–1.256)	0.871	0.956(0.825–1.107)	0.546
Sex	0.871(0.219–3.456)	0.844	1.099(0.488–2.476)	0.820	0.744(0.487–1.137)	0.172
Body temperature, °C	1.045(0.643–1.699)	0.859	0.920(0.723–1.171)	0.500	0.812(0.698–0.944)	0.007
Heart rate, beats/minute	0.763(0.490–1.189)	0.233	0.933(0.731–1.191)	0.578	0.929(0.806–1.070)	0.306
Systolic blood pressure, mmHg	1.265(0.599–2.669)	0.537	1.075(0.739–1.565)	0.704	1.165(0.949–1.431)	0.145
Diastolic blood pressure, mmHg	0.870(0.424–1.784)	0.870	1.153(0.808–1.646)	0.432	1.041(0.851–1.273)	0.696
Respiratory rate, breaths/min	1.734(0.595–5.053)	0.313	1.390(0.797–2.425)	0.246	0.904(0.658–1.242)	0.532
Anterior-wall AMI	0.000	0.999	0.416(0.044–3.927)	0.444	0.601(0.251–1.441)	0.254
Inferior-wall AMI	0.000	0.999	0.315(0.033–3.007)	0.316	0.607(0.249–1.475)	0.270
Hypertension	2.160(0.735–6.343)	0.161	1.137(0.651–1.985)	0.651	1.296(0.937–1.793)	0.117
Diabetes mellitus	0.913(0.318–2.617)	0.865	1.325(0.695–2.525)	0.393	0.922(0.633–1.342)	0.671
Current smoker	0.770(0.242–2.446)	0.657	0.917(0.500–1.680)	0.778	0.796(0.561–1.130)	0.202