Non-interventional, Retrospective Cohort Study to Explore OAC Treatment in Korea

Event rate was defined as number of events divided by 100 participant-years. Hemorrhagic stroke, ischemic stroke and systemic embolism requiring hospitalization identified using hospital claims which had hemorrhagic, ischemic stroke or systemic embolism Korean standard classification of diseases (KCD) code, whichever came first (first occurred event used). KCD code: hemorrhagic stroke = I60-62, I690-692; ischemic stroke = G459, I63, I693; systemic embolism = I74. Hospitalization and brain CT/MRI codes were used for ischemic stroke, hemorrhagic stroke.Hospitalization and any CT/MRI codes were used for systemic embolism. Index date = the first prescription date of study drugs during intake duration. Participants were identified as NOAC user or Warfarin user depending on the date when they first used NOAC or Warfarin during intake duration.

Event rate was defined as number of events divided by 100 participant-years. Hemorrhagic stroke, ischemic stroke and systemic embolism requiring hospitalization identified using hospital claims which had hemorrhagic, ischemic stroke or systemic embolism Korean standard classification of diseases (KCD) code, whichever came first (first occurred event used). KCD code: hemorrhagic stroke = I60-62, I690-692; ischemic stroke = G459, I63, I693; systemic embolism = I74. Hospitalization and brain CT/MRI codes were used for ischemic stroke, hemorrhagic stroke.Hospitalization and any CT/MRI codes were used for systemic embolism. Index date = the first prescription date of study drugs during intake duration.

Event rate: number of events divided by 100 participant-years. Intracranial hemorrhage (ICH), gastrointestinal (GI) bleeding and other bleeding requiring hospitalization identified using hospital claims which had ICH, GI and other bleeding KCD code whichever came first (first occurred event used). KCD code: ICH = I60-62, I690-92, S064-66, S068; GI bleeding = I850, I983, K2211, K226, K228, K250, K252, K254, K256, K260, K262, K264, K266, K270, K272, K274, K276, K280, K282, K284, K286, K290, K3181, K5521, K625, K920, K921, K922; other bleeding = D62,H448,H3572,H356,H313,H210,H113,H052,H470,H431,I312,N020-N029,N421,N831,N857,N920,N923,N930,N938-939,M250,R233,R040-042,R048-049,T792,T810,N950,R310, R311, R318, R58, T455, Y442, D683). Brain CT/MRI codes were used for ICH only. Index date= first prescription date of study drugs during intake duration. Participants were identified as NOAC user/Warfarin user depending on the date when they first used NOAC or Warfarin during intake duration.

Event rate was defined as number of events divided by 100 participant-years. Intracranial hemorrhage (ICH), gastrointestinal (GI) bleeding and other bleeding requiring hospitalization identified using hospital claims which had ICH, GI and other bleeding KCD code whichever came first (first occurred event used). KCD code: ICH = I60-62, I690-92, S064-66, S068; GI bleeding = I850, I983, K2211, K226, K228, K250, K252, K254, K256, K260, K262, K264, K266, K270, K272, K274, K276, K280, K282, K284, K286, K290, K3181, K5521, K625, K920, K921, K922; other bleeding = D62, H448, H3572, H356, H313, H210, H113, H052, H470, H431, I312, N020-N029, N421, N831, N857, N920, N923, N930, N938-939, M250, R233, R040-042, R048-049, T792, T810, N950, R310, R311, R318, R58, T455, Y442, D683). Brain CT/MRI codes were used for ICH only. Index date = the first prescription date of study drugs during intake duration.

Event rate was number of events divided by 100 participant-years for first occurrence of hemorrhagic stroke events after index date was reported. Hemorrhagic stroke requiring hospitalization was identified using hospital claims which had a hemorrhagic stroke KCD code (I60-62, I690-692). For hemorrhagic stroke, hospitalization and brain CT or MRI codes were also required. Index date = the first prescription date of study drugs during intake duration. Participants were identified as NOAC user or Warfarin user depending on the date when they first used NOAC or Warfarin during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of hemorrhagic stroke events after index date was reported. Hemorrhagic stroke requiring hospitalization was identified using hospital claims which had a hemorrhagic stroke KCD code (I60-62, I690-692). For hemorrhagic stroke, hospitalization and brain CT or MRI codes were also required. Index date = the first prescription date of study drugs during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of ischemic stroke events after index date was reported. Ischemic stroke requiring hospitalization was identified using hospital claims which had ischemic stroke KCD code (G459, I63, and I693). For ischemic stroke, hospitalization and brain CT or MRI codes were also required. Index date = the first prescription date of study drugs during intake duration. Participants were identified as NOAC user or Warfarin user depending on the date when they first used NOAC or Warfarin during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of ischemic stroke events after index date was reported. Ischemic stroke requiring hospitalization was identified using hospital claims which had ischemic stroke KCD code (G459, I63, and I693). For ischemic stroke, hospitalization and brain CT or MRI codes were also required. Index date = the first prescription date of study drugs during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of systemic embolism. Systemic embolism requiring hospitalization was identified using hospital claims which had systemic embolism KCD code = I74. For systemic embolism, hospitalization and any CT or MRI codes was used. Index date = the first prescription date of study drugs during intake duration. Participants were identified as NOAC user or Warfarin user depending on the date when they first used NOAC or Warfarin during intake duration

Event rate was defined as number of events divided by 100 participant-years for first occurrence of systemic embolism. Systemic embolism requiring hospitalization was identified using hospital claims which had systemic embolism KCD code = I74. For systemic embolism, hospitalization and any CT or MRI codes was used. Index date= the first prescription date of study drugs during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of GI bleeding events after index date was reported. GI bleeding requiring hospitalization was identified using hospital claims which had a GI bleeding KCD code (I850, I983, K2211, K226, K228, K250, K252, K254, K256, K260, K262, K264, K266, K270, K272, K274, K276, K280, K282, K284, K286, K290, K3181, K5521, K625, K920, K921, K922). Index date = the first prescription date of study drugs during intake duration. Participants were identified as NOAC user or Warfarin user depending on the date when they first used NOAC or Warfarin during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of GI bleeding events after index date was reported. GI bleeding requiring hospitalization was identified using hospital claims which had a GI bleeding KCD code (I850, I983, K2211, K226, K228, K250, K252, K254, K256, K260, K262, K264, K266, K270, K272, K274, K276, K280, K282, K284, K286, K290, K3181, K5521, K625, K920, K921, K922). Index date = the first prescription date of study drugs during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of intracranial hemorrhage events after index date was reported. Intracranial hemorrhage requiring hospitalization was identified using hospital claims which had an intracranial hemorrhage KCD code (I60, I61, I62, I690, I691, I692, S064, S065, S066, and S068) and brain CT or MRI codes. Index date = the first prescription date of study drugs during intake duration. Participants were identified as NOAC user or Warfarin user depending on the date when they first used NOAC or Warfarin during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of intracranial hemorrhage events after index date was reported. Intracranial hemorrhage requiring hospitalization was identified using hospital claims which had an intracranial hemorrhage KCD code (I60, I61, I62, I690, I691, I692, S064, S065, S066, and S068) and brain CT or MRI codes. Index date = the first prescription date of study drugs during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of other bleeding events after index date was reported. Other bleeding requiring hospitalization was identified using hospital claims which had other bleeding KCD code (D62, H448, H3572, H356, H313, H210, H113, H052, H470, H431, I312, N020-N029, N421, N831, N857, N920, N923, N930, N938, N939, M250, R233, R040, R041, R042, R048, R049, T792, T810, N950, R310, R311, R318, R58, T455, Y442, D683). Index date = the first prescription date of study drugs during intake duration. Participants were identified as NOAC user or Warfarin user depending on the date when they first used NOAC or Warfarin during intake duration.

Event rate was defined as number of events divided by 100 participant-years for first occurrence of other bleeding events after index date was reported. Other bleeding requiring hospitalization was identified using hospital claims which had other bleeding KCD code (D62, H448, H3572, H356, H313, H210, H113, H052, H470, H431, I312, N020-N029, N421, N831, N857, N920, N923, N930, N938, N939, M250, R233, R040, R041, R042, R048, R049, T792, T810, N950, R310, R311, R318, R58, T455, Y442, D683). Index date = the first prescription date of study drugs during intake duration.