RT Journal Article SR Electronic T1 Generic patient self-report and investigator report instruments of therapeutic safety and tolerability. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2033 OP 2036 VO 32 IS 10 A1 Marissa N D Lassere A1 Kent R Johnson A1 Susanne Van Santen A1 Kerri Carlton A1 Joy Rappo A1 Rachel Michael A1 John R Kirwan A1 John P Edmonds YR 2005 UL http://www.jrheum.org/content/32/10/2033.abstract AB A patient self-report instrument was designed as a patient event index that maps to a parallel investigator instrument. Event importance (a composite of severity, frequency, and duration) was reported, but attribution was not required. The patient instrument used a checklist but also allowed for spontaneous reporting for new or unusual events. The investigator instrument (also a checklist) includes all events reported by the patient, as well as events such as signs, investigations, and diagnoses that would not generally be known to the patient. Presently, both patient and investigator instruments are to be used alongside current methods of adverse event reporting in clinical trials. The patient instrument would serve as a safety/tolerability index, whereas the investigator instrument would be a fully quantifiable (appropriately weighted), standardized adverse event index. As in many methodological projects in medicine, the overriding problem was the tradeoff between validity (comprehensiveness and accuracy) and feasibility (clarity and short administration time) in instrument development. A summary of pilot studies and results of instrument reliability and validity are presented.