Inclusion criteria
Patients must meet all of the following inclusion criteria to be eligible for inclusion in the study:
- Having definitive diagnosis code of colorectal cancer [International Classification of Diseases (ICD)-10 code: C18, C19 or C20] on the index month or within 6 months before index month [-6 month to 0 month (index month)]. An inpatient or outpatient visit assigned a diagnosis code consistent with colorectal cancer using ICD-10 coding:
- Malignant neoplasm of colon: C18
- Malignant neoplasm of rectosigmoid junction: C19
- Malignant neoplasm of rectum: C20
- Having at least one medical record between 180 days and 1 day before the index date (Day -180 to -1) and having at least one medical record prior to 181 days before the index date (Day -181 and before)
- 15 years of age or older at the index date (Day 0)
Exclusion criteria Patients meeting any of the following criteria will not be included in the study.
"Common"
- Having initial prescriptions for Bevacizumab-Pfizer biosimilar and Avastin on the same date (index date for both drugs being identical)
- Having the prescription of Other Bevacizumab Biosimilars on the same date as the earlier index date of Bevacizumab-Pfizer biosimilar or Avastin
"Haemorrhage"
- Have definitive diagnosis code of major haemorrhage between 180 days and 1 day before the index date (Day -180 to 1): between 6 months and 1 month before the month in which the index date is included (Month -6 to -1) Major haemorrhage: basic condition and any of additional conditions (2, 5 or 6). The outcome incidence date is the earliest date of the composite criteria between 180 days and 1 day before the index date (Day -180 to 1): between 6 months and 1 month before the month in which the index date is included (Month -6 to -1)
- Have diagnosis code of minor haemorrhage between 30 days and 1 day before the index date (Day -30 to -1): 1 month before the month in which the index date is included (Month -1) Minor haemorrhage: basic condition and any of additional conditions (1, 3 or 4). The outcome incidence date is the earliest date of the composite criteria between 30 days and 1 day before the index date (Day -30 to -1): 1 month before the month in which the index date is included (Month -1)
"Hypertension, hypertensive crisis" Have definitive diagnosis code of "hypertension, hypertensive crisis" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Proteinuria, nephrotic syndrome" Have definitive diagnosis code of "proteinuria, nephrotic syndrome" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Bone-marrow depression" Have definitive diagnosis code of "bone-marrow depression" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Arterial thromboembolism" Have definitive diagnosis code of "arterial thromboembolism" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Cardiac failure congestive" Have definitive diagnosis code of "cardiac failure congestive" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Wound healing delayed" Have definitive diagnosis code of "wound healing delayed" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Gastrointestinal perforation" Have definitive diagnosis code of "gastrointestinal perforation" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Venous thromboembolism" Have definitive diagnosis code of "venous thromboembolism" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Fistula" Have definitive diagnosis code of "fistula" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Shock, anaphylaxis, hypersensitivity reactions, infusion reaction" Have definitive diagnosis code of "shock, anaphylaxis, hypersensitivity reactions, infusion reaction" between 180 days and 1 day before index date (Day -180 to -1): between 6 months and 1 month before the month in which the index date is included (Month -6 to -1)
"Interstitial pneumonia" Have definitive diagnosis code of "interstitial pneumonia" before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Cardiac disorders (excluding "cardiac failure congestive" and "arterial thromboembolism")" Have definitive diagnosis code of "cardiac disorders (excluding "cardiac failure congestive" and "arterial thromboembolism") before index date (Day -1 and before): before the month in which the index date is included (Month -1 and before)
"Infections" Have a date of hospitalization due to infection and definitive diagnosis code of "infections" between 180 days and 1 day before index date (Day -180 to -1)
