Table 3.

Factors associated with prehospital death compared to 28-day survival.

	OR [95% CI]	p Value
Model 1: Cases aged 25–74 years, 2003–2017 (n = 9277)a
Age (cont.)	1.05 [1.04–1.06]	< 0.0001
Living alone (yes vs. no)	1.26 [1.06–1.49]	0.01
Actual smoking/nicotine abuse (yes vs. no)	1.47 [1.24–1.75]	< 0.0001
Hypertension (yes vs. no)	0.69 [0.57–0.85]	0.0003
Diabetes mellitus (yes vs. no)	1.20 [1.03–1.41]	0.02
Dyslipidaemia (yes vs. no)	0.69 [0.59–0.82]	< 0.0001
Previous MI (yes vs. no)	1.87 [1.58–2.22]	< 0.0001
Angina pectoris (yes vs. no)	4.53 [3.84–5.34]	< 0.0001
Previous stroke (yes vs. no)	2.09 [1.68–2.61]	< 0.0001
Model 2: Cases aged 75–84 years, 2009–2017 (n = 2908)b
Age (cont.)	1.17 [1.14–1.21]	< 0.0001
Obesityc (yes vs. no)	0.80 [0.64–0.99]	0.04
Actual smoking/nicotine abuse (yes vs. no)	1.65 [1.21–2.23]	0.001
Hypertension (yes vs. no)	0.53 [0.40–0.71]	< 0.0001
Previous MI (yes vs. no)	2.28 [1.90–2.73]	< 0.0001
Angina pectoris (yes vs. no)	3.21 [2.68–3.86]	< 0.0001
Previous stroke (yes vs. no)	2.03 [1.64–2.51]	< 0.0001
COPD (yes vs. no)	2.20 [1.69–2.85]	< 0.0001

MI myocardial infarction, COPD chronic obstructive pulmonary disease.

^a1794 observations (n = 854 prehospital death cases; n = 940 cases of 28-day survivors) were deleted due to missing values for the explanatory variables. COPD was not included in this model as information was not available up to 2008.

^bNote: 768 observations (n = 359 prehospital death cases; n = 409 cases of 28-day survivors) were deleted due to missing values for the explanatory variables.

^cObesity reported by last treating physicians (fatal cases) or defined as body mass index >  = 30 kg/m² (non-fatal cases).