Table 3.

Keyword monograms and bigrams found in (selected) heart disease apps.

Store		Keywords
Apple App Store
	Monograms	drug, beat, race, heart, cardiovascular, block, rapid, cardiac
	Bigrams	chest pain, cardiac arrest, heart attack, short breath, supraventricular tachycardia, valvular heart, skip beat, irregular heartbeat
Google Play Store
	Monograms	heart, blood, pain, cardiovascular attack, chest, short, cardiac
	Bigrams	heart attack, chest pain, cardiac arrest, irregular heartbeat, chest discomfort, valvular heart, supraventricular tachycardia, rapid heartbeat