For researchers submitting trial data to ClinicalTrials.gov, the Adverse Events module is one of four mandatory results sections. It requires reporting in three primary categories: All-Cause Mortality: A table tracking all deaths that occurred during the study, regardless of cause. Serious Adverse Events (SAEs): A tabular summary of events resulting in death, life-threatening conditions, hospitalization, or significant disability. Other Adverse Events: A table for non-serious events that exceed a specific frequency threshold, such as 5% within any study arm.
Adverse Events Module path is as follows:
Study -> Results Section -> Adverse Events Module -> Event Groups
Study -> Results Section -> Adverse Events Module -> Serious Events
Study -> Results Section -> Adverse Events Module -> Other Events
| Term | Type | Organ System | Vocab | View |
|---|---|---|---|---|
| ACCIDENT CEREBROVASCULAR | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| ALLERGIC REACTION | SYSTEMATIC_ASSESSMENT | Immune system disorders | COSTART, CTCAE 3.0 | View |
| ANEMIA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| ANOREXIA | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| BELL'S PALSY | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| CARDIAC ARREST | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| CELLULITIS | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| CHEST PAIN | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| CHILLS | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| CONFUSION | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| CONGESTIVE HEART FAILURE | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| CONSTIPATION | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| DEHYDRATION | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| DIARRHEA | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| DISTRESS RESPIRATORY | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| DIZZINESS | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| EDEMA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| EFFUSION PLEURAL | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| EMBOLISM PULMONARY | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| EMBOLUS PULMONARY | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| FEBRILE NEUTROPENIA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| FEVER | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| BRAIN METASTASES | SYSTEMATIC_ASSESSMENT | Neoplasms benign, malignant and unspecified (incl cysts and polyps) | COSTART, CTCAE 3.0 | View |
| DEATH SUDDEN (NOS) | SYSTEMATIC_ASSESSMENT | Investigations | COSTART, CTCAE 3.0 | View |
| DISEASE PROGRESSION | SYSTEMATIC_ASSESSMENT | Investigations | COSTART, CTCAE 3.0 | View |
| FIBRILLATION ATRIAL | SYSTEMATIC_ASSESSMENT | Cardiac disorders | COSTART, CTCAE 3.0 | View |
| FLUTTER ATRIAL | SYSTEMATIC_ASSESSMENT | Cardiac disorders | COSTART, CTCAE 3.0 | View |
| FRACTURE PATHOLOGICAL | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| GASTROINTESTINAL BLEEDING | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| GI HEMORRHAGE | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| HEMATURIA | SYSTEMATIC_ASSESSMENT | Renal and urinary disorders | COSTART, CTCAE 3.0 | View |
| HYDRONEPHROSIS | SYSTEMATIC_ASSESSMENT | Renal and urinary disorders | COSTART, CTCAE 3.0 | View |
| HYPOKALAEMIA | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| HYPOTENSION | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| INFECTION BACTERIAL | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| INFECTION BLADDER | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| INFECTION VIRAL | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| ISCHEMIA MYOCARDIAL | SYSTEMATIC_ASSESSMENT | Cardiac disorders | COSTART, CTCAE 3.0 | View |
| MENTAL DEFICIENCY | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| MENTAL DETERIORATION | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| MOOD ALTERED | SYSTEMATIC_ASSESSMENT | Psychiatric disorders | COSTART, CTCAE 3.0 | View |
| MULTIPLE ORGAN FAILURE | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| MUSCLE WEAKNESS | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| MYALGIA | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| MYOCARDIAL INFARCTION | SYSTEMATIC_ASSESSMENT | Cardiac disorders | COSTART, CTCAE 3.0 | View |
| NAUSEA | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| NEUTROPENIA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| NOSEBLEED | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| PAIN | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| PAIN BACK | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| PAIN PELVIC | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| PAIN SACROILIAC | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| PHLEBITIS | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| PLEURAL EFFUSION | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| PNEUMONIA | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| PROSTATIC DISORDER | SYSTEMATIC_ASSESSMENT | Endocrine disorders | COSTART, CTCAE 3.0 | View |
| RECTAL BLEEDING | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| RECTAL DISORDER | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| RECTAL PAIN | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| RENAL FAILURE | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| RESPIRATORY FAILURE | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| SHORTNESS OF BREATH | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| SPINAL CORD COMPRESSION | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| STROKE | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| SYNCOPE | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| TACHYCARDIA | SYSTEMATIC_ASSESSMENT | Cardiac disorders | COSTART, CTCAE 3.0 | View |
| THROMBOSIS | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| TRACHEOBRONCHITIS | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| URINARY BLADDER OBSTRUCTION | SYSTEMATIC_ASSESSMENT | Renal and urinary disorders | COSTART, CTCAE 3.0 | View |
| URINARY INCONTINENCE | SYSTEMATIC_ASSESSMENT | Renal and urinary disorders | COSTART, CTCAE 3.0 | View |
| URINARY RETENTION | SYSTEMATIC_ASSESSMENT | Renal and urinary disorders | COSTART, CTCAE 3.0 | View |
| VOMITING | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| WEAKNESS | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| Term | Type | Organ System | Vocab | View |
|---|---|---|---|---|
| CONSTIPATION | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| DIARRHEA | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| EDEMA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| VOMITING | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| DIZZINESS | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| HYPOKALAEMIA | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| COUGH | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| SHORTNESS OF BREATH | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| INFECTION BACTERIAL | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| PAIN BACK | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| MUCOSITIS | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| WEAKNESS | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| FEVER | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| GASTROESOPHAGEAL REFLUX | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| ALLERGIC REACTION | SYSTEMATIC_ASSESSMENT | Immune system disorders | COSTART, CTCAE 3.0 | View |
| HYPERGLYCEMIA | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| INFECTION UPPER RESPIRATORY | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| INSOMNIA | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| MYALGIA | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| WEIGHT LOSS | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| HEADACHE | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| DEHYDRATION | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| NEUROPATHY | SYSTEMATIC_ASSESSMENT | Nervous system disorders | COSTART, CTCAE 3.0 | View |
| HEMATURIA | SYSTEMATIC_ASSESSMENT | Renal and urinary disorders | COSTART, CTCAE 3.0 | View |
| HYPOCALCEMIA | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| CHILLS | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| CONJUNCTIVITIS | SYSTEMATIC_ASSESSMENT | Eye disorders | COSTART, CTCAE 3.0 | View |
| INFECTION FUNGAL | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| LYMPHOPENIA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| MUSCLE WEAKNESS | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| NAIL DISORDER | SYSTEMATIC_ASSESSMENT | Skin and subcutaneous tissue disorders | COSTART, CTCAE 3.0 | View |
| ABDOMINAL PAIN | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| ALKALINE PHOSPHASTASE SERUM INCREASE | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| ALOPECIA | SYSTEMATIC_ASSESSMENT | Skin and subcutaneous tissue disorders | COSTART, CTCAE 3.0 | View |
| INFECTION BLADDER | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| CELLULITIS | SYSTEMATIC_ASSESSMENT | Infections and infestations | COSTART, CTCAE 3.0 | View |
| URINARY URGENCY/FREQUENCY | SYSTEMATIC_ASSESSMENT | Renal and urinary disorders | COSTART, CTCAE 3.0 | View |
| ANXIETY | SYSTEMATIC_ASSESSMENT | Psychiatric disorders | COSTART, CTCAE 3.0 | View |
| CHEST PAIN | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| EPIPHORA | SYSTEMATIC_ASSESSMENT | Eye disorders | COSTART, CTCAE 3.0 | View |
| GLUCOSE BLOOD INCREASED | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| PHARYNGITIS | SYSTEMATIC_ASSESSMENT | Respiratory, thoracic and mediastinal disorders | COSTART, CTCAE 3.0 | View |
| ARTHRALGIA | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| ALT INCREASED | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| AST INCREASED | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| CREATININE SERUM INCREASED | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| SHOULDER PAIN | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| HYPOTENSION | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| THROMBOSIS | SYSTEMATIC_ASSESSMENT | Vascular disorders | COSTART, CTCAE 3.0 | View |
| CARDIAC INSUFFICIENCY | SYSTEMATIC_ASSESSMENT | Cardiac disorders | COSTART, CTCAE 3.0 | View |
| DYSGUESIA | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| DRY MOUTH | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| HYPERKALEMIA | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| RECTAL BLEEDING | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| BRUISE | SYSTEMATIC_ASSESSMENT | Musculoskeletal and connective tissue disorders | COSTART, CTCAE 3.0 | View |
| URINARY INCONTINENCE | SYSTEMATIC_ASSESSMENT | Renal and urinary disorders | COSTART, CTCAE 3.0 | View |
| NEUTROPENIA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| FATIGUE | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| LEUCOPENIA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| RASH | SYSTEMATIC_ASSESSMENT | Skin and subcutaneous tissue disorders | COSTART, CTCAE 3.0 | View |
| ANEMIA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| PAIN | SYSTEMATIC_ASSESSMENT | General disorders | COSTART, CTCAE 3.0 | View |
| HYPOMAGNESAEMIA | SYSTEMATIC_ASSESSMENT | Metabolism and nutrition disorders | COSTART, CTCAE 3.0 | View |
| NAUSEA | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| ANOREXIA | SYSTEMATIC_ASSESSMENT | Gastrointestinal disorders | COSTART, CTCAE 3.0 | View |
| THROMBOCYTOPENIA | SYSTEMATIC_ASSESSMENT | Blood and lymphatic system disorders | COSTART, CTCAE 3.0 | View |
| DRY SKIN | SYSTEMATIC_ASSESSMENT | Skin and subcutaneous tissue disorders | COSTART, CTCAE 3.0 | View |