The Comparative Safety and Effectiveness of Warfarin and Dabigatran Prescribed in the Non-valvular Atrial Fibrillation Population With Humana Healthcare Coverage

Ischemic Stroke (Primary Analysis)

This outcome measure describes the incidence of ischemic stroke for dabigatran and warfarin in the primary analysis. Ischemic stroke includes: Occlusion and stenosis of precerebral arteries with cerebral infarction, Occlusion of cerebral arteries with cerebral infarction and Acute, but ill-defined, cerebrovascular disease but excludes above diagnosis if hospitalization lasted less than 48 hours and was accompanied by carotid endarterectomy. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Ischemic Stroke (Post-hoc Analysis)

This outcome measure describes the incidence of ischemic stroke for dabigatran and warfarin in the post-hoc analysis. Ischemic stroke includes: Occlusion and stenosis of precerebral arteries with cerebral infarction, Occlusion of cerebral arteries with cerebral infarction and Acute, but ill-defined, cerebrovascular disease but excludes above diagnosis if hospitalization lasted less than 48 hours and was accompanied by carotid endarterectomy. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Hemorrhagic Stroke (Primary Analysis)

This outcome measure describes the incidence of hemorrhagic stroke for dabigatran and warfarin in the primary analysis. Hemorrhagic stroke includes: subarachnoid hemorrhage, intracerebral hemorrhage but excludes these codes if "traumatic brain injury" or "rehabilitation care" as primary code is present. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Hemorrhagic Stroke (Post-hoc Analysis)

This outcome measure describes the incidence of hemorrhagic stroke for dabigatran and warfarin in the post-hoc analysis. Hemorrhagic stroke includes: Subarachnoid hemorrhage and intracerebral hemorrhage but excludes these codes if "traumatic brain injury" or "rehabilitation care" as primary code is present. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Intracranial Bleeding (Primary Analysis)

This outcome measure describes the incidence of major intracranial bleeding for dabigatran and warfarin in the primary analysis. Major intracranial bleeding includes: Subarachnoid hemorrhage, intracerebral hemorrhage, other and unspecified intracranial hemorrhage, subarachnoid, subdural or extradural hemorrhage following injury without mention of open intracranial wound other and unspecified intracranial hemorrhage following injury without mention of open intracranial wound but excludes these codes if concomitant discharge diagnosis of major trauma was present. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Intracranial Bleeding (Post-hoc Analysis)

This outcome measure describes the incidence of major intracranial bleeding for dabigatran and warfarin in the post-hoc analysis. Major intracranial bleeding includes: Subarachnoid hemorrhage, intracerebral hemorrhage, other and unspecified intracranial hemorrhage, subarachnoid, subdural or extradural hemorrhage following injury without mention of open intracranial wound other and unspecified intracranial hemorrhage following injury without mention of open intracranial wound but excludes these codes if concomitant discharge diagnosis of major trauma was present. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Extracranial Bleeding (Primary Analysis)

This outcome measure describes the incidence of major extracranial bleeding for dabigatran and warfarin in the primary analysis. Major extracranial bleeding includes: major gastrointestinal (GI) bleeding, major urogenital bleeding and major other bleeding. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Extracranial Bleeding (Post-hoc Analysis)

This outcome measure describes the incidence of major extracranial bleeding for dabigatran and warfarin in the post-hoc analysis. Major extracranial bleeding includes: major gastrointestinal (GI) bleeding, major urogenital bleeding and major other bleeding. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major GI Bleeding (Primary Analysis)

This outcome measure describes the incidence of major GI bleeding for dabigatran and warfarin in the primary analysis. Major GI bleeding includes major upper GI bleeding and major lower GI bleeding. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major GI Bleeding (Post-hoc Analysis)

This outcome measure describes the incidence of major GI bleeding for dabigatran and warfarin in the post-hoc analysis. Major GI bleeding includes major upper GI bleeding and major lower GI bleeding. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Upper GI Bleeding (Primary Analysis)

This outcome measure describes the incidence of major upper GI bleeding for dabigatran and warfarin in the primary analysis. Major upper GI bleeding includes acute gastric ulcer, chronic or unspecified gastric ulcer, acute duodenal ulcer, chronic or unspecified duodenal ulcer, acute, chronic or unspecified peptic ulcer, acute gastrojejunal ulcer, chronic or unspecified gastrojejunal ulcer with hemorrhage with/without obstruction and with hemorrhage and perforation with/without obstruction, hematemesis, endoscopic control of gastric or duodenal bleeding, upper gastrointestinal endoscopy including esophagus, stomach, and either the duodenum and/or jejunum as appropriate with control of bleeding, any method. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Upper GI Bleeding (Post-hoc Analysis)

This outcome measure describes the incidence of major upper GI bleeding for dabigatran and warfarin in the post-hoc analysis. Major upper GI bleeding includes acute, chronic or unspecified gastric ulcer, acute duodenal ulcer, chronic or unspecified duodenal ulcer, acute, chronic or unspecified peptic ulcer, acute, chronic or unspecified gastrojejunal ulcer with hemorrhage with/without (w/wo) obstruction and with hemorrhage and perforation w/wo obstruction, hematemesis, endoscopic control of gastric or duodenal bleeding, upper gastrointestinal endoscopy including esophagus, stomach, and either the duodenum and/or jejunum as appropriate with control of bleeding, any method. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. This was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Lower GI Bleeding (Primary Analysis)

This outcome measure describes the incidence of major lower GI bleeding for dabigatran and warfarin in the primary analysis. Major lower GI bleeding includes diverticulosis or diverticulitis of small intestine or of colon with hemorrhage, hemorrhage of rectum and anus, angiodysplasia of intestine with hemorrhage, blood in stool and hemorrhage of GI tract (unspecified). Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Lower GI Bleeding (Post-hoc Analysis)

This outcome measure describes the incidence of major lower GI bleeding for dabigatran and warfarin in the post-hoc analysis. Major lower GI bleeding includes diverticulosis or diverticulitis of small intestine or of colon with hemorrhage, hemorrhage of rectum and anus, angiodysplasia of intestine with hemorrhage, blood in stool and hemorrhage of GI tract (unspecified). A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Urogenital Bleeding (Primary Analysis)

This outcome measure describes the incidence of major urogenital bleeding for dabigatran and warfarin in the primary analysis. Major urogenital bleeding includes hematuria and excessive/frequent menstruation and secondary diagnosis indicating acute bleeding (anemia). Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Major Urogenital Bleeding (Post-hoc Analysis)

This outcome measure describes the incidence of major urogenital bleeding for dabigatran and warfarin in the post-hoc analysis. Major urogenital bleeding includes hematuria and excessive/frequent menstruation and secondary diagnosis indicating acute bleeding (anemia). A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Other Major Bleeds (Primary Analysis)

This outcome measure describes the incidence of other major bleeds for dabigatran and warfarin in the primary analysis. Other major bleeds includes hemarthrosis, hemopericardium, hemoptysis, epistaxis, hemorrhage (not specified) and acute posthemorrhagic anemia. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Other Major Bleeds (Post-hoc Analysis)

This outcome measure describes the incidence of other major bleeds for dabigatran and warfarin in the post-hoc analysis. Other major bleeds includes hemarthrosis, hemopericardium, hemoptysis, epistaxis, hemorrhage (not specified) and acute posthemorrhagic anemia. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Transient Ischemic Attack (TIA) (Primary Analysis)

This outcome measure describes the incidence of TIA for dabigatran and warfarin in the primary analysis. TIA includes transient cerebral ischemia as the principal (primary) discharge diagnosis. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

TIA (Post-hoc Analysis)

This outcome measure describes the incidence of TIA for dabigatran and warfarin in the post-hoc analysis. TIA includes transient cerebral ischemia as the principal (primary) discharge diagnosis. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Myocardial Infarction (MI) (Primary Analysis)

This outcome measure describes the incidence of MI for dabigatran and warfarin in the primary analysis. MI includes the acute myocardial infarction. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

MI (Post-hoc Analysis)

This outcome measure describes the incidence of MI for dabigatran and warfarin in the post-hoc analysis. MI includes the acute myocardial infarction. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Venous Thromboembolism (Primary Analysis)

This outcome measure describes the incidence of venous thromboembolism for dabigatran and warfarin in the primary analysis. Venous thromboembolism includes the deep vein thrombosis and the pulmonary embolism. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Venous Thromboembolism (Post-hoc Analysis)

This outcome measure describes the incidence of venous thromboembolism for dabigatran and warfarin in the post-hoc analysis. Venous thromboembolism includes the deep vein thrombosis and the pulmonary embolism. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Deep Vein Thrombosis (Primary Analysis)

This outcome measure describes the incidence of deep vein thrombosis for dabigatran and warfarin in the primary analysis. Deep vein thrombosis includes phlebitis and thrombophlebitis and other venous embolism and thrombosis. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Deep Vein Thrombosis (Post-hoc Analysis)

This outcome measure describes the incidence of deep vein thrombosis for dabigatran and warfarin in the post-hoc analysis. Deep vein thrombosis includes phlebitis and thrombophlebitis and other venous embolism and thrombosis. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Pulmonary Embolism (Primary Analysis)

This outcome measure describes the incidence of pulmonary embolism for dabigatran and warfarin in the primary analysis. Pulmonary embolism includes acute pulmonary heart disease. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

Pulmonary Embolism (Post-hoc Analysis)

This outcome measure describes the incidence of pulmonary embolism for dabigatran and warfarin in the post-hoc analysis. Pulmonary embolism includes acute pulmonary heart disease. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

All-cause Death (Primary Analysis)

This outcome measure describes the incidence of death for dabigatran and warfarin in the primary analysis. Study outcomes for this analysis were identified using either the admitting diagnoses or on any of the service lines associated with an inpatient hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)

All-cause Death (Post-hoc Analysis)

This outcome measure describes the incidence of death for dabigatran and warfarin in the post-hoc analysis. A post-hoc analysis was conducted that measured outcomes using an algorithm to define the principal diagnosis. The principal diagnosis was defined as the primary diagnosis on the first room and board charge record within a hospital admission. This method results in identification of a single outcome for a hospitalization.

Time frame: From 1 October 2010 to 30 April 2013 identified with index date (first prescription of dabigatran or warfarin) plus a follow-up period of 12 months (up to 42 months)