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 |
|---|---|---|---|---|
| FEVER | None | General disorders | None | View |
| BACTEREMIA | None | Infections and infestations | None | View |
| SEPTICEMIA OR SEPTIC SHOCK | None | Infections and infestations | None | View |
| OROLINGUAL ANGIOEDEMA | None | Immune system disorders | None | View |
| ARTHRITIS | None | Musculoskeletal and connective tissue disorders | None | View |
| LOCALIZED PAIN | None | General disorders | None | View |
| SYSTEMIC HEMORRHAGE | None | Blood and lymphatic system disorders | None | View |
| FAILURE TO THRIVE | None | General disorders | None | View |
| OTHER SYSTEMIC ADVERSE EVENT OR COMPLICATION | None | General disorders | None | View |
| PNEUMONIA | None | Infections and infestations | None | View |
| ACUTE RESPIRATORY DISTRESS SYNDROME (ARDS) OR RESPIRATORY FAILURE | None | Respiratory, thoracic and mediastinal disorders | None | View |
| PULMONARY EMBOLISM | None | Vascular disorders | None | View |
| APNEA OR RESPIRATORY ARREST | None | Respiratory, thoracic and mediastinal disorders | None | View |
| RESPIRATORY INSUFFICIENCY | None | Respiratory, thoracic and mediastinal disorders | None | View |
| PLEURAL EFFUSION | None | Respiratory, thoracic and mediastinal disorders | None | View |
| SHORTNESS OF BREATH | None | Respiratory, thoracic and mediastinal disorders | None | View |
| OTHER RESPIRATORY DISORDER OR COMPLICATION | None | Respiratory, thoracic and mediastinal disorders | None | View |
| ANGINA PECTORIS (STABLE) | None | Cardiac disorders | None | View |
| ACUTE CORONARY SYNDROME - MYOCARDIAL INFARCTION | None | Cardiac disorders | None | View |
| CARDIAC ARREST | None | Cardiac disorders | None | View |
| CARDIOGENIC SHOCK | None | Cardiac disorders | None | View |
| "CONGESTIVE HEART FAILURE, PULMONARY EDEMA" | None | Cardiac disorders | None | View |
| PERIPHERAL ARTERIAL OCCLUSION | None | Cardiac disorders | None | View |
| VENTRICULAR FIBRILLATION OR TACHYCARDIA | None | Cardiac disorders | None | View |
| ATRIAL FIBRILLATION/FLUTTER | None | Cardiac disorders | None | View |
| BRADYCARDIA | None | Cardiac disorders | None | View |
| "CONDUCTION BLOCKS (ATRIO-VENTRICULAR BLOCKS, BUNDLE-BRANCH BLOCKS)" | None | Cardiac disorders | None | View |
| SUPRAVENTRICULAR ARRHYTHMIAS | None | Cardiac disorders | None | View |
| DEEP VENOUS THROMBOSIS | None | Cardiac disorders | None | View |
| ARTERIAL DISSECTION | None | Cardiac disorders | None | View |
| ARTERIAL EMBOLUS | None | Cardiac disorders | None | View |
| HYPERTENSION-NOT INTENDED | None | Vascular disorders | None | View |
| HYPOTENSION-NOT INTENDED | None | Vascular disorders | None | View |
| ACUTE CORONARY SYNDROME - UNSTABLE ANGINA | None | Cardiac disorders | None | View |
| CHEST PAIN (INCLUDING ATYPICAL) WITHOUT MENTION OF CARDIAC ORIGEN | None | Cardiac disorders | None | View |
| TROPONIN LEAK | None | Cardiac disorders | None | View |
| VALVULAR HEART DISEASE | None | Cardiac disorders | None | View |
| PRE-CEREBRAL OR CEREBRAL VASCULAR DISEASE (INCLUDING STENOSIS OR OCCLUSION) | None | Vascular disorders | None | View |
| OTHER CARDIAC ARRHYTHMIAS | None | Cardiac disorders | None | View |
| OTHER CARDIOVASCULAR DISORDER OR COMPLICATION | None | Cardiac disorders | None | View |
| ABDOMINAL PAIN | None | Gastrointestinal disorders | None | View |
| GASTRIC OR DUODENAL ULCER | None | Gastrointestinal disorders | None | View |
| NAUSEA/VOMITING | None | Gastrointestinal disorders | None | View |
| GASTROINTESTINAL TRACT BLEEDING | None | Gastrointestinal disorders | None | View |
| DYSPHAGIA | None | Gastrointestinal disorders | None | View |
| PARALYTIC ILEUS/ BOWEL PSEUDO-OSTRUCTION | None | Gastrointestinal disorders | None | View |
| BOWEL OSBTRUCTION | None | Gastrointestinal disorders | None | View |
| OTHER DIGESTIVE DISORDER OR COMPLICATION | None | Gastrointestinal disorders | None | View |
| HYPOGLYCEMIA | None | Metabolism and nutrition disorders | None | View |
| HYPERGLYCEMIA | None | Metabolism and nutrition disorders | None | View |
| HYPONATREMIA | None | Metabolism and nutrition disorders | None | View |
| HYPOCALCEMIA | None | Metabolism and nutrition disorders | None | View |
| DEHYDRATION | None | Metabolism and nutrition disorders | None | View |
| OTHER ENDOCRINE OR METABOLIC DISORDER OR COMPLICATION | None | Metabolism and nutrition disorders | None | View |
| NON-CEREBRAL HEMORRHAGE | None | Blood and lymphatic system disorders | None | View |
| COAGULOPATHY | None | Blood and lymphatic system disorders | None | View |
| ANEMIA | None | Blood and lymphatic system disorders | None | View |
| THROMBOCYTOPENIA | None | Blood and lymphatic system disorders | None | View |
| THROMBOTIC THROMBOCYTOPENIC PURPURA | None | Blood and lymphatic system disorders | None | View |
| RECURRENT STROKE NOT SPECIFIED AS HEMORRHAGE OR INFARCTION | None | Nervous system disorders | None | View |
| DEPRESSION OF CONSCIOUSNESS | None | Nervous system disorders | None | View |
| BRAIN ABSCESS OR ENCEPHALITIS | None | Nervous system disorders | None | View |
| MENINGITIS OR VENTRICULITIS | None | Nervous system disorders | None | View |
| SYMPTOMATIC INTRACRANIAL HEMORRHAGE | None | Blood and lymphatic system disorders | None | View |
| ASYMPTOMATIC INTRACRANIAL HEMORRHAGE | None | Blood and lymphatic system disorders | None | View |
| TRANSIENT ISCHEMIC ATTACK | None | Nervous system disorders | None | View |
| CEREBRAL INFARCTION | None | Nervous system disorders | None | View |
| CEREBRAL EDEMA | None | Nervous system disorders | None | View |
| SEIZURE | None | Nervous system disorders | None | View |
| CONFUSION/ENCEPHALOPATHY/DELIRIUM | None | Nervous system disorders | None | View |
| ANXIETY | None | Nervous system disorders | None | View |
| HEADACHE | None | Nervous system disorders | None | View |
| INCREASED INTRA-CRANIAL PRESSURE | None | Nervous system disorders | None | View |
| PROGRESSION OF STROKE | None | Nervous system disorders | None | View |
| SYNCOPE OR PRE-SYNCOPE | None | Vascular disorders | None | View |
| OTHER NEUROLOGICAL DISORDER OR COMPLICATION | None | Nervous system disorders | None | View |
| URINARY TRACT INFECTION | None | Infections and infestations | None | View |
| HEMATURIA | None | Renal and urinary disorders | None | View |
| RENAL INSUFFICIENCY | None | Renal and urinary disorders | None | View |
| RENAL FAILURE | None | Renal and urinary disorders | None | View |
| URINARY RETENTION | None | Renal and urinary disorders | None | View |
| OTHER UROGENITAL DISORDER OR COMPLICATION | None | Renal and urinary disorders | None | View |
| FRACTURE | None | Musculoskeletal and connective tissue disorders | None | View |
| SURGICAL SITE INFECTION | None | Infections and infestations | None | View |
| SURGICAL WOUND HEMATOMA | None | Injury, poisoning and procedural complications | None | View |
| OTHER NON-INFECTIOUS SURGICAL WOUND COMPLICATION | None | Injury, poisoning and procedural complications | None | View |
| DECUBITUS ULCERS/PRESSURE SORES | None | Skin and subcutaneous tissue disorders | None | View |
| MALIGNANT NEOPLASM (EXCEPT SKIN) | None | Neoplasms benign, malignant and unspecified (incl cysts and polyps) | None | View |
| PSYCHIATRIC DEPRESSION | None | Psychiatric disorders | None | View |
| FALL | None | Injury, poisoning and procedural complications | None | View |
| "HEMATOMA, NOT OTHERWISE SPECIFIED" | None | Vascular disorders | None | View |
| PSYCHIATRIC DISORDER | None | Psychiatric disorders | None | View |
| CELLULITIS/NON-SURGICAL SKIN INFECTION | None | Infections and infestations | None | View |
| OTHER UNCLASSIFIED ADVERSE EVENT | None | General disorders | None | View |
| Term | Type | Organ System | Vocab | View |
|---|---|---|---|---|
| FEVER | None | General disorders | None | View |
| BACTEREMIA | None | Infections and infestations | None | View |
| ALLERGIC REACTION TO STUDY DRUG | None | Immune system disorders | None | View |
| ARTHRITIS | None | Musculoskeletal and connective tissue disorders | None | View |
| LOCALIZED PAIN | None | General disorders | None | View |
| GENERALIZED PAIN | None | General disorders | None | View |
| CRAMPING | None | Reproductive system and breast disorders | None | View |
| SYSTEMIC HEMORRHAGE | None | Blood and lymphatic system disorders | None | View |
| FATIGUE | None | General disorders | None | View |
| DIZZINESS | None | Nervous system disorders | None | View |
| OTHER SYSTEMIC ADVERSE EVENT OR COMPLICATION | None | General disorders | None | View |
| PNEUMONIA | None | Infections and infestations | None | View |
| ACUTE RESPIRATORY DISTRESS SYNDROME (ARDS) OR RESPIRATORY FAILURE | None | Respiratory, thoracic and mediastinal disorders | None | View |
| PULMONARY EMBOLISM | None | Vascular disorders | None | View |
| BRONCHOSPASM | None | Respiratory, thoracic and mediastinal disorders | None | View |
| HYPOXEMIA | None | Respiratory, thoracic and mediastinal disorders | None | View |
| HYPERCARBIA | None | Respiratory, thoracic and mediastinal disorders | None | View |
| CRACKLES/RALES | None | Respiratory, thoracic and mediastinal disorders | None | View |
| APNEA OR RESPIRATORY ARREST | None | Respiratory, thoracic and mediastinal disorders | None | View |
| TACHYPNEA | None | Respiratory, thoracic and mediastinal disorders | None | View |
| RESPIRATORY INSUFFICIENCY | None | Respiratory, thoracic and mediastinal disorders | None | View |
| PLEURAL EFFUSION | None | Respiratory, thoracic and mediastinal disorders | None | View |
| SHORTNESS OF BREATH | None | Respiratory, thoracic and mediastinal disorders | None | View |
| UPPER REPIRATORY INFECTION | None | Infections and infestations | None | View |
| COUGH | None | Respiratory, thoracic and mediastinal disorders | None | View |
| BRONCHITIS | None | Infections and infestations | None | View |
| OTHER RESPIRATORY DISORDER OR COMPLICATION | None | Respiratory, thoracic and mediastinal disorders | None | View |
| ANGINA PECTORIS (STABLE) | None | Cardiac disorders | None | View |
| ACUTE CORONARY SYNDROME - MYOCARDIAL INFARCTION | None | Cardiac disorders | None | View |
| "CONGESTIVE HEART FAILURE, PULMONARY EDEMA" | None | Cardiac disorders | None | View |
| VENTRICULAR FIBRILLATION OR TACHYCARDIA | None | Cardiac disorders | None | View |
| ATRIAL FIBRILLATION/FLUTTER | None | Cardiac disorders | None | View |
| BRADYCARDIA | None | Cardiac disorders | None | View |
| TACHYCARDIA | None | Cardiac disorders | None | View |
| "CONDUCTION BLOCKS (ATRIO-VENTRICULAR BLOCKS, BUNDLE-BRANCH BLOCKS)" | None | Cardiac disorders | None | View |
| SUPRAVENTRICULAR ARRHYTHMIAS | None | Cardiac disorders | None | View |
| DEEP VENOUS THROMBOSIS | None | Vascular disorders | None | View |
| SUPERFICIAL VENOUS THROMBOSIS | None | Vascular disorders | None | View |
| ARTERIAL DISSECTION | None | Injury, poisoning and procedural complications | None | View |
| ARTERIAL THROMBOSIS | None | Vascular disorders | None | View |
| HYPERTENSION-NOT INTENDED | None | Vascular disorders | None | View |
| HYPOTENSION-NOT INTENDED | None | Vascular disorders | None | View |
| CHEST PAIN (INCLUDING ATYPICAL) WITHOUT MENTION OF CARDIAC ORIGEN | None | Cardiac disorders | None | View |
| TROPONIN LEAK | None | Cardiac disorders | None | View |
| VALVULAR HEART DISEASE | None | Cardiac disorders | None | View |
| EKG ABNORMALITIES | None | Investigations | None | View |
| PHLEBITIS | None | Infections and infestations | None | View |
| PRE-CEREBRAL OR CEREBRAL VASCULAR DISEASE (INCLUDING STENOSIS OR OCCLUSION) | None | Vascular disorders | None | View |
| FLUID OVERLOAD ALONE | None | Metabolism and nutrition disorders | None | View |
| OTHER CARDIAC ARRHYTHMIAS | None | Cardiac disorders | None | View |
| OTHER CARDIOVASCULAR DISORDER OR COMPLICATION | None | Cardiac disorders | None | View |
| ABDOMINAL PAIN | None | Gastrointestinal disorders | None | View |
| GASTRIC OR DUODENAL ULCER | None | Gastrointestinal disorders | None | View |
| NAUSEA/VOMITING | None | Gastrointestinal disorders | None | View |
| GASTROINTESTINAL TRACT BLEEDING | None | Gastrointestinal disorders | None | View |
| "HEPATITIS, JAUNDICE, OR LIVER FAILURE" | None | Hepatobiliary disorders | None | View |
| DIARRHEA | None | Gastrointestinal disorders | None | View |
| CONSTIPATION | None | Gastrointestinal disorders | None | View |
| FECAL INCONTINENCE | None | Gastrointestinal disorders | None | View |
| LIVER ENZYMES ELEVATION | None | Investigations | None | View |
| DYSPHAGIA | None | Gastrointestinal disorders | None | View |
| PARALYTIC ILEUS/ BOWEL PSEUDO-OSTRUCTION | None | Gastrointestinal disorders | None | View |
| BOWEL OSBTRUCTION | None | Gastrointestinal disorders | None | View |
| OTHER DIGESTIVE DISORDER OR COMPLICATION | None | Gastrointestinal disorders | None | View |
| HYPOGLYCEMIA | None | Metabolism and nutrition disorders | None | View |
| HYPERGLYCEMIA | None | Metabolism and nutrition disorders | None | View |
| DIABETES INSIPIDUS | None | Metabolism and nutrition disorders | None | View |
| DIABETES MELLITUS | None | Metabolism and nutrition disorders | None | View |
| HYPONATREMIA | None | Metabolism and nutrition disorders | None | View |
| HYPERNATREMIA | None | Metabolism and nutrition disorders | None | View |
| HYPOKALEMIA | None | Metabolism and nutrition disorders | None | View |
| HYPERKALEMIA | None | Metabolism and nutrition disorders | None | View |
| HYPERLIPIDEMIA | None | Metabolism and nutrition disorders | None | View |
| HYPOCALCEMIA | None | Metabolism and nutrition disorders | None | View |
| HYPERCALCEMIA | None | Metabolism and nutrition disorders | None | View |
| HYPOMAGNESEMIA | None | Metabolism and nutrition disorders | None | View |
| DEHYDRATION | None | Metabolism and nutrition disorders | None | View |
| ACID-BASE IMBALANCE | None | Metabolism and nutrition disorders | None | View |
| HYPOCHLOREMIA | None | Metabolism and nutrition disorders | None | View |
| HYPERCHLOREMIA | None | Metabolism and nutrition disorders | None | View |
| OTHER ENDOCRINE OR METABOLIC DISORDER OR COMPLICATION | None | Metabolism and nutrition disorders | None | View |
| NON-CEREBRAL HEMORRHAGE | None | Blood and lymphatic system disorders | None | View |
| ECCHYMOSIS | None | Skin and subcutaneous tissue disorders | None | View |
| COAGULOPATHY | None | Blood and lymphatic system disorders | None | View |
| ANEMIA | None | Blood and lymphatic system disorders | None | View |
| POLYCYTEMIA | None | Blood and lymphatic system disorders | None | View |
| THROMBOCYTOPENIA | None | Blood and lymphatic system disorders | None | View |
| LEUKOPENIA | None | Blood and lymphatic system disorders | None | View |
| LEUKOCYTOSIS | None | Blood and lymphatic system disorders | None | View |
| TROMBOCYTOSIS | None | Blood and lymphatic system disorders | None | View |
| OTHER COAGULATION OR HEMATOLOGIC DISORDER OR COMPLICATION | None | Blood and lymphatic system disorders | None | View |
| RECURRENT STROKE NOT SPECIFIED AS HEMORRHAGE OR INFARCTION | None | Blood and lymphatic system disorders | None | View |
| DEPRESSION OF CONSCIOUSNESS | None | Nervous system disorders | None | View |
| SYMPTOMATIC INTRACRANIAL HEMORRHAGE | None | Blood and lymphatic system disorders | None | View |
| ASYMPTOMATIC INTRACRANIAL HEMORRHAGE | None | Blood and lymphatic system disorders | None | View |
| CRANIAL NERVE INJURY | None | Injury, poisoning and procedural complications | None | View |
| TRANSIENT ISCHEMIC ATTACK | None | Vascular disorders | None | View |
| CEREBRAL INFARCTION | None | Nervous system disorders | None | View |
| CEREBRAL EDEMA | None | Nervous system disorders | None | View |
| SEIZURE | None | Nervous system disorders | None | View |
| CONFUSION/ENCEPHALOPATHY/DELIRIUM | None | Psychiatric disorders | None | View |
| ANXIETY | None | Psychiatric disorders | None | View |
| HEADACHE | None | Nervous system disorders | None | View |
| AGITATION | None | Nervous system disorders | None | View |
| APHASIA | None | Psychiatric disorders | None | View |
| INCREASED INTRA-CRANIAL PRESSURE | None | Nervous system disorders | None | View |
| PROGRESSION OF STROKE | None | Nervous system disorders | None | View |
| RETINAL VASCULAR ACCIDENT | None | Eye disorders | None | View |
| SYNCOPE OR PRE-SYNCOPE | None | Vascular disorders | None | View |
| OTHER NEUROLOGICAL DISORDER OR COMPLICATION | None | Nervous system disorders | None | View |
| URINARY TRACT INFECTION | None | Infections and infestations | None | View |
| HEMATURIA | None | Renal and urinary disorders | None | View |
| RENAL INSUFFICIENCY | None | Renal and urinary disorders | None | View |
| RENAL FAILURE | None | Renal and urinary disorders | None | View |
| UROGENITAL INCONTINENCE (WAS 410) | None | Renal and urinary disorders | None | View |
| URINARY RETENTION | None | Renal and urinary disorders | None | View |
| OTHER UROGENITAL DISORDER OR COMPLICATION | None | Renal and urinary disorders | None | View |
| FRACTURE | None | Injury, poisoning and procedural complications | None | View |
| INFILTRATION OF IV SITE | None | Injury, poisoning and procedural complications | None | View |
| SURGICAL SITE INFECTION | None | Injury, poisoning and procedural complications | None | View |
| SURGICAL WOUND HEMATOMA | None | Injury, poisoning and procedural complications | None | View |
| OTHER NON-INFECTIOUS SURGICAL WOUND COMPLICATION | None | Injury, poisoning and procedural complications | None | View |
| DECUBITUS ULCERS/PRESSURE SORES | None | Skin and subcutaneous tissue disorders | None | View |
| BLISTER | None | Injury, poisoning and procedural complications | None | View |
| MALIGNANT NEOPLASM (EXCEPT SKIN) | None | Neoplasms benign, malignant and unspecified (incl cysts and polyps) | None | View |
| MALIGNANT NEOPLASM (SKIN) | None | Neoplasms benign, malignant and unspecified (incl cysts and polyps) | None | View |
| ACCIDENTAL TRAUMA | None | Injury, poisoning and procedural complications | None | View |
| PSYCHIATRIC DEPRESSION | None | Psychiatric disorders | None | View |
| FALL | None | Injury, poisoning and procedural complications | None | View |
| PERIPHERAL EDEMA | None | General disorders | None | View |
| OTHER ENZYME/S ELEVATION | None | Investigations | None | View |
| INSOMNIA | None | Psychiatric disorders | None | View |
| "HEMATOMA, NOT OTHERWISE SPECIFIED" | None | Vascular disorders | None | View |
| DERMATITIS | None | Skin and subcutaneous tissue disorders | None | View |
| PSYCHIATRIC DISORDER | None | Psychiatric disorders | None | View |
| CELLULITIS/NON-SURGICAL SKIN INFECTION | None | Infections and infestations | None | View |
| OTHER UNCLASSIFIED ADVERSE EVENT | None | General disorders | None | View |
| SEPTICEMIA OR SEPTIC SHOCK | None | Blood and lymphatic system disorders | None | View |
| OROLINGUAL ANGIOEDEMA | None | Immune system disorders | None | View |
| RASH | None | Skin and subcutaneous tissue disorders | None | View |
| ITCHING | None | Skin and subcutaneous tissue disorders | None | View |
| GASTRITIS/ ESOPHAGITIS/GERD | None | Gastrointestinal disorders | None | View |