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Table 5 Classification of adverse events by cause and relatedness to study intervention

From: Adverse events among high-risk participants in a home-based walking study: a descriptive study

  Study Related Non-study Related  
Category, Freq: n (%) Serious Non-Serious Minor-Moderate Serious Non-Serious Minor-Moderate Total
Cardiovascular 2 (1.4) 4 (2.6) 23 (15.8) 45 (30.8) 74 (50.6)
Musculoskeletal 0 (0.0) 9 (6.2) 3 (2.1) 15 (10.3) 27 (18.6)
Metabolic-Endocrine 0 (0.0) 0 (0.0) 6 (4.1) 4 (2.6) 10 (6.7)
Infectious Disease 0 (0.0) 3 (2.1) 4 (2.7) 8 (5.5) 15 (10.3)
Psycho-Neurological 0 (0.0) 1 (0.7) 4 (2.7) 3 (2.1) 8 (5.5)
Gastrointestinal 0 (0.0) 0 (0.0) 0 (0.0) 3 (2.1) 3 (2.1)
Motor Vehicle Accident 0 (0.0) 0 (0.0) 2 (1.4) 1 (0.7) 3 (2.1)
Surgical 0 (0.0) 0 (0.0) 4 (2.7) 2 (1.4) 6 (4.1)
Total 2 (1.4) 17 (11.6) 46 (31.5) 81 (55.5) 146 (100.0)
  1. Note. Serious AE's were defined consistent with most IRB definitions as a 1) death; 2) a life threatening experience; 3) hospitalization or prolongation of hospitalization; 4) persistent significant disability or incapacity; or 5) an event that jeopardizes the subject and may require medical or surgical treatment to prevent one of the preceding outcomes. Non-serious AE's consisted of both minor and moderately serious AE's. Moderately serious AE's were defined as concerning new medical symptoms (not imminently life threatening) or acute events that either required suspension until clearance by a physician to rule out potential for Serious AE's (cardiopulmonary dysfunction) and insure optimal patient self-care (e.g., medication, blood pressure, or blood sugar regulation) or, events causing voluntary cessation of walking by the participant until the aggravating event passed (e.g., illness, serious musculoskeletal injury, motor vehicle accident). Minor AE's were defined as events not necessitating study suspension and causing minor discomfort or inconvenience to the participant as a result of study participation (e.g., sore muscles, blisters, equipment malfunction).