Table 1.

Distribution of Classes Across the Entire Dataset

Manufacturer	Nominal Model	n	Model Group	n
Pacemaker (n = 1,213)
Biotronik	Actros	20	Actros/Philos	40
	Philos	20
	Cyclos	27	Cyclos	27
	Evia	28	Evia	28
Boston Scientific	Altrua	20	Altrua/Insignia	40
	Insignia	20
	Contak Renewal TR2	40	Contak Renewal TR2	40
	Contak TR	10	Contak TR/Discovery/Meridian/Pulsar Max	40
	Discovery	10
	Meridian	10
	Pulsar Max	10
	Ingenio	40	Ingenio	40
	Proponent	40	Proponent	40
	Visionist	40	Visionist	40
Medtronic	Adapta	10	Adapta/Kappa/Sensia/Versa	40
	Kappa	10
	Sensia	10
	Versa	10
	Advisa	40	Advisa	40
	AT500	38	AT500	38
	Azure	40	Azure	40
	C20	20	C20/T20	40
	T20	20
	C60	40	C60	40
	Enrhythm	40	Enrhythm	40
	Insync III	40	Insync III	40
	Sigma	40	Sigma	40
	Syncra	40	Syncra	40
	Vita II	29	Vita II	29
Sorin	Elect	40	Elect	40
	Elect XS Plus	30	Elect XS Plus	30
	MiniSwing	28	MiniSwing	28
	Neway	37	Neway	37
	Reply	40	Reply	40
	Rhapsody	20	Rhapsody/Symphony	40
	Symphony	20
	Thesis	36	Thesis	36
St. Jude	Accent	40	Accent	40
	Allure Quadra	40	Allure Quadra	40
	Identity	40	Identity	40
	Victory	40	Victory	40
	Zephyr	40	Zephyr	40
ICD (n = 415)
Boston Scientific	Autogen	10	Autogen/Cognis/Energen/Teligen	40
	Cognis	10
	Energen	10
	Teligen	10
	Contak Renewal 4	40	Contak Renewal 4	40
	Emblem	40	Emblem	40
	Ventak Prizm	33	Ventak Prizm	40
	Vitality	40	Vitality	40
Medtronic	Claria	13	Claria/Evera/Viva	40
	Evera	13
	Viva	14
	Concerto	8	Concerto/Consulta/Maximo/Protecta/Secura	40
	Consulta	8
	Maximo	8
	Protecta	8
	Secura	8
	Maximo	30	Maximo	30
Sorin	Ovatio	25	Ovatio	25
St. Jude	Ellipse	40	Ellipse	40
	Quadra Assura	40	Quadra Assura	40
Loop recorders (n = 58)				58
Medtronic	Reveal	26	Reveal	26
	Reveal Linq	32	Reveal Linq	32

Distribution of classes across the entire dataset is divided into device type, manufacturer, and model. Visually identical model names (middle column) are merged into “model groups” (right column). ICD = implantable cardioverter-defibrillator.