The Incidence and Risk Factors of Acute Myocardial Infarction Among Patients with Gastrointestinal bleeding: A Retrospective Study

Figures & data

Table 1 Patient Demographic Characteristics

Characteristic	AMI Group	Non-AMI Group	P value
Age (years, n, %)			0.000
≥70	28 (75.7)	391 (31.3)
<70	9 (24.3)	859 (68.7)
Male sex (n, %)	30 (81.1)	854 (68.3)	0.099
Co-morbidities (n, %)
Hypertension	22 (59.5)	447 (35.8)	0.003
Coronary heart disease	13 (35.1)	166 (13.3)	0.000
Diabetes	9 (24.3)	172 (13.8)	0.069
Peptic ulcers	4 (10.8)	124 (10.0	0.858
Cerebral infarction	2 (5.4)	105 (8.4)	0.227
Chronic liver disease	6 (16.2)	216 (17.3)	0.866
Chronic kidney disease	3 (8.1)	24 (1.9)	0.010
Recent medication history before admission (n, %)
Aspirin	13 (35.1)	193 (15.4)	0.001
Clopidogrel	5 (13.5)	74 (5.9)	0.058
Warfarin	0 (0.00)	26 (2.1)	0.375

Notes: <, less than; ≥, no less than; %, percentage; n, number.

Abbreviation: AMI, acute myocardial infarction.

Figure 1 ROC curve of HB on admission.

Table 2 Logistic Regression Analysis of Risk Factors for AMI

Variables	OR(95% CI)	P value
Age ≥70 (years)	4.372 (1.917–9.970)	0.000
Hypertension	1.091 (0.501–2.373)	0.826
Coronary heart disease	2.927 (1.336–6.414)	0.007
Chronic kidney disease	2.153 (0.547–8.474)	0.273
Aspirin	1.287 (0.567–2.919)	0.546
HB<76.5g/L	4.909 (2.262–10.656)	0.000

Notes: <, less than; ≥, no less than.

Abbreviations: OR, odds ratio; 95% CI, 95% confidence interval; HB, hemoglobin.

Table 3 The Basic Clinical Data of the Survival Group and Death Group

Characteristic	Survivors (n=1203)	Deaths (n=84)	P value
Age (years, n, %)			0.109
≥70	385 (32.0)	34 (40.5)
<70	818 (68.0)	50 (59.5)
Male sex (n, %)	824 (68.5)	60 (71.4)	0.575
Co-morbidities (n, %)
Hypertension	435 (36.2)	34 (40.5)	0.427
Coronary heart disease	164 (13.6)	10 (11.9)	0.654
Diabetes	170 (14.1)	11 (13.1)	0.792
Peptic ulcers	124 (10.3)	5 (6.0)	0.199
Cerebral infarction	101 (8.4)	6 (7.1)	0.688
Chronic liver disease	246 (20.4)	40 (47.6)	0.000
Chronic kidney disease	22 (1.8)	4 (4.8)	0.284
Recent medication history before admission (n, %)
Aspirin	196 (16.3)	9 (10.7)	0.177
Clopidogrel	50 (4.2)	3 (3.6)	0.794
Warfarin	24 (2.0)	2 (2.4)	0.808
HB<76.5g/L (n, %)	416 (34.6)	55 (65.5)	0.000

Notes: <, less than; ≥, no less than; %, percentage; n, number.

Abbreviations: HB, hemoglobin; AMI, acute myocardial infarction.