Automatic Prediction of Recurrence of Major Cardiovascular Events: A Text Mining Study Using Chest X-Ray Reports

Table 1

Characteristics of the patients.

Characteristics	Total n = 5603
Age, years, mean (SD)	56.2 (12.5)
Female sex, n (%)	1926 (34.4)
Current smoker, n (%)	1549 (27.6)
History of
, n (%)	2166 (38.7)
Stroke, n (%)	1076 (19.2)
, n (%)	631 (11.3)
, n (%)	306 (5.5)
Years since first diagnosis of CVD, median (IQR)	0 (0–4)
Risk factors for CVD
Diabetes mellitus, n (%)	1047 (18.7)
Hypertension, n (%)	2353 (42.0)
Dyslipidemia, n (%)	432 (7.7)
, kg/m^2 (mean (SD))	26.8 (4.3)
, mmHg (mean (SD))	140 (21)
, mmHg (mean (SD))	83 (13)
Total cholesterol, mmol/L (mean (SD))	5.14 (1.38)
-cholesterol, mmol/L (mean (SD))	3.1 (1.16)
-cholesterol, mmol/L (mean (SD)	1.27 (0.38)
Triglycerides, mmol/L (median (IQR))	1.7 (1.2–2.5)
, ml/min/1.73 m^2 (median (IQR))	80 (68–91)
HbA1, mmol/mol (median (IQR))	5.7 (5.4–6.1)
Glucose, mmol/L (median (IQR))	5.7 (2.6–6.4)
Hemoglobin, mmol/L (mean (SD))	6.0 (2.04)
Creatinine, mol/L (median (IQR))	84 (73–97)
, mg/L (median (IQR))	1.95 (0.90–4.20)
, mU/l (mean (SD))	0.9 (0.09)
during follow-up, n (%)	1385 (24.7)

CVD: cardiovascular disease; CHD: coronary heart disease; PAD: peripheral arterial disease; AAA: abdominal aortic aneurysm; BMI: body mass index; SBP: systolic blood pressure; DBP: diastolic blood pressure; LDL: low-density lipoprotein; HDL: high-density lipoprotein; MDRD: modification of diet in renal disease; HbA1c: hemoglobin; A1c CRP: C-reactive protein; TSH: thyroid-stimulating hormone; MACE: major cardiovascular events.