Table 1.

The ten most important words found in 30 bootstrapping experiments based on ranking metric and coefficient metric with TF-IDF and LR

Code	No. of words	Top ten words (ranking metric)	Top ten words (coefficient metric)
I21	90	nstemi, myocardi, mi, thrombu, infarct	nstemi, myocardi, mi, infarct, thrombu
		stemi, stent, plavix, jayden, bracken	stemi, stent, plavix, jayden, xarelto
I25	65	coronari, cad, arteri, nativ, mi	coronari, cad, arteri, nativ, mi
		angina, plavix, cabg, stent, lad	angina, plavix, cabg, stent, lad
I27	80	pulmonari, hypertens, sildenafil, ph, revatio	pulmonary, hypertens, sildenafil, ph, revatio
		echo, diastol, flolan, ex, shah	echo, diastol, ex, vinicio, fpah
I42	79	cardiomyopathi, carvedilol, coreg, ef	cardiomyopathi, carvedilol, coreg, ef, lv
		hypertroph, hcm, hocm, echo, icd	hypertroph, hcm, hocm, echo, icd
I48	71	fibril, atrial, fib, afib, coumadin, af	fibril, atrial, fib, afib, coumadin, af
		irregular, paroxysm, xarelto, digoxin	irregular, paroxysm, xarelto, digoxin
I50	91	failur, chf, heart, lasix, congest	failur, chf, heart, lasix, congest
		diastol, systol, bnp, coreg, spironolacton	diastol, systol, bnp, coreg, spironolacton
I70	94	atherosclerosi, aorta, arteri, vascular, peripher	atherosclerosi, aorta, arteri, vascular, peripher
		stenosi, dystroph, claudic, nail, renal	claudic, stenosi, dystroph, nail, renal
I85	63	cirrhosi, varic, liver, transplant, ascit	cirrhosi, varic, liver, transplant, ascit
		portal, esophag, lutchman, propranolol, hepat	portal, esophag, lutchman, propranolol, hepat

The ranking metric ranks the important words by the sum of the rankings of the word importance in bootstrapping experiments, and the coefficient metric ranks the important words by the sum of LR coefficients in bootstrapping experiments. The words are shown after stemming.