Chest pain in the ambulance; prevalence, causes and outcome - a retrospective cohort study

Table 3 Predictors of mortality and discharge with an acute cardiac diagnosis in all chest pain patients

		30-day mortality			Acute cardiac diagnosis during index admission
	Total^a	Risk Ratio (95% CI)	P-value	Deaths, n(%)	Risk Ratio (95% CI)	P-value	Acute cardiac diagnoses, n(%)
Total	7635			160 (2%)			1140 (15%)
Gender
Female	3485	1.0 (ref.)		74 (2%)	1.0 (ref.)		375 (11%)
Male	4150	1.06 (0.78;1.44)	0.721	86 (2%)	1.77 (1.58;1.99)	< 0.001	765 (18%)
Age-group
< 30	344	1.0 (ref.)		2 (1%)	1.0 (ref.)		6 (2%)
30–49	1344	0.12 (0.01;1.37)	0.089	1 (%)	4.71 (2.09;10.62)	< 0.001	109 (8%)
50–59	1373	0.24 (0.03;1.68)	0.149	2 (%)	9.05 (4.05;20.21)	< 0.001	208 (15%)
60–69	1691	1.94 (0.46;8.23)	0.369	22 (1%)	11.77 (5.29;26.18)	< 0.001	326 (19%)
> =70	2883	6.33 (1.56;25.61)	0.010	133 (5%)	11.39 (5.13;25.32)	< 0.001	491 (17%)
Acute Myocardial Infarction (AMI)
No prior AMI	6785	1.0 (ref.)		132 (2%)	1.0 (ref.)		1005 (15%)
Prior AMI	850	0.96 (0.63;1.46)	0.835	28 (3%)	0.96 (0.81;1.14)	0.677	135 (16%)
Diabetes (DM)
No DM	6812	1.0 (ref.)		131 (2%)	1.0 (ref.)		1013 (15%)
DM	823	1.11 (0.74;1.66)	0.618	29 (4%)	0.97 (0.82;1.15)	0.758	127 (15%)
Congestive heart disease (CHD)
No CHD	7003	1.0 (ref.)		128 (2%)	1.0 (ref.)		1065 (15%)
CHD	632	1.33 (0.88;2.02)	0.178	32 (5%)	0.69 (0.55;0.87)	0.002	75 (12%)
Chronic pulmonary disease (CPD)
No CPD	6757	1.0 (ref.)		114 (2%)	1.0 (ref.)		1053 (16%)
CPD	878	1.9 (1.35;2.68)	< 0.001	46 (5%)	0.59 (0.48;0.72)	< 0.001	87 (10%)
Renal disease (RD)
No or mild RD	7325	1.0 (ref.)		139 (2%)	1.0 (ref.)		1097 (15%)
Moderate to severe RD	310	1.7 (1.06;2.71)	0.027	21 (7%)	0.9 (0.68;1.2)	0.466	43 (14%)

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