Daniel Cushman1, Zachary McCormick1, Ellen Casey1, Christopher T Plastaras2. 1. The Rehabilitation Institute of Chicago/Northwestern McGaw Medical Center, Department of Physical Medicine and Rehabilitation, Chicago, Illinois. 2. Hospital of the University of Pennsylvania, Department of Physical Medicine and Rehabilitation, Philadelphia, Pennsylvania, USA.
Abstract
OBJECTIVE: Pain intensity is commonly rated on an 11-point Numerical Pain Rating Scale which can be expressed as a calculated percentage pain reduction (CPPR), or by patient-reported percentage pain reduction (PRPPR). We aimed to determine the agreement between CPPR and PRPPR in quantifying musculoskeletal pain improvement at short-term follow-up after a corticosteroid injection. DESIGN: Retrospective cohort study. SETTING: Urban, academic, physical medicine, and rehabilitation outpatient interventional musculoskeletal and spine center. METHODS: The agreement between CPPR and PRPPR was determined by concordance correlation coefficient (CCC) in subjects who had experienced improvement in musculoskeletal or radicular pain 3 weeks after a first-time injection at our clinic. Subjects who experienced unchanged pain (PRPPR = 0) were compared to CPPR with paired t-test. RESULTS: We examined 197 subjects with greater than 3/10 pain who underwent first-time fluoroscopic-guided corticosteroid injections. Ninety-three subjects reported higher PRPPR than CPPR values, and 41 subjects reported higher CPPR values. The CCC between CPPR and PRPPR was 0.44 (95% CI 0.35-0.54), with a precision of 0.54 and an accuracy of 0.81, and 95% limits of agreement ranging between -41% and +73%. Values for CCC, precision, and accuracy were higher for males compared to females and were highest in the youngest age group (18-40) and lowest in the middle age group (41-60). CONCLUSIONS: PRPPR may not agree with CPPR at 3 week follow-up, as these individuals tend to report a higher estimated percentage improvement compared to the value calculated from their pain scores. Wiley Periodicals, Inc.
OBJECTIVE:Pain intensity is commonly rated on an 11-point Numerical Pain Rating Scale which can be expressed as a calculated percentage pain reduction (CPPR), or by patient-reported percentage pain reduction (PRPPR). We aimed to determine the agreement between CPPR and PRPPR in quantifying musculoskeletal pain improvement at short-term follow-up after a corticosteroid injection. DESIGN: Retrospective cohort study. SETTING: Urban, academic, physical medicine, and rehabilitation outpatient interventional musculoskeletal and spine center. METHODS: The agreement between CPPR and PRPPR was determined by concordance correlation coefficient (CCC) in subjects who had experienced improvement in musculoskeletal or radicular pain 3 weeks after a first-time injection at our clinic. Subjects who experienced unchanged pain (PRPPR = 0) were compared to CPPR with paired t-test. RESULTS: We examined 197 subjects with greater than 3/10 pain who underwent first-time fluoroscopic-guided corticosteroid injections. Ninety-three subjects reported higher PRPPR than CPPR values, and 41 subjects reported higher CPPR values. The CCC between CPPR and PRPPR was 0.44 (95% CI 0.35-0.54), with a precision of 0.54 and an accuracy of 0.81, and 95% limits of agreement ranging between -41% and +73%. Values for CCC, precision, and accuracy were higher for males compared to females and were highest in the youngest age group (18-40) and lowest in the middle age group (41-60). CONCLUSIONS: PRPPR may not agree with CPPR at 3 week follow-up, as these individuals tend to report a higher estimated percentage improvement compared to the value calculated from their pain scores. Wiley Periodicals, Inc.
Authors: Zachary McCormick; Daniel Cushman; Mary Caldwell; Benjamin Marshall; Leda Ghannad; Christine Eng; Jaymin Patel; Steven Makovitch; Samuel K Chu; Ashwin N Babu; David R Walega; Christina Marciniak; Joel Press; David J Kennedy; Christopher Plastaras Journal: J Nat Sci Date: 2015-08
Authors: Timothy R Deer; Steven M Falowski; Gregory A Moore; J Kelby Hutcheson; Isaac Peña; Kenneth Candido; Eric G Cornidez; von Und Zu Fraunberg; Bram Blomme; Robyn A Capobianco Journal: Spine (Phila Pa 1976) Date: 2022-04-01 Impact factor: 3.468