Related Experiment Video
Updated: Aug 11, 2026
Objective Nociceptive Assessment in Ventilated ICU Patients: A Feasibility Study Using Pupillometry and the Nociceptive Flexion Reflex
Published on: July 4, 2018
The revised FLACC observational pain tool: improved reliability and validity for pain assessment in children with
Shobha Malviya1, Terri Voepel-Lewis, Constance Burke
1Department of Anesthesiology, Section of Pediatrics, University of Michigan Health Systems, Ann Arbor, MI 48109-0211, USA. smalviya@umich.edu
Background:
Difficulty with pain assessment in individuals who cannot self-report their pain poses a significant barrier to effective pain management. However, available assessment tools lack consistent reliability as pain measures in children with cognitive impairment (CI). This study evaluated the validity and reliability of the revised and individualized Face Legs Activity Cry and Consolability (FLACC) behavioral pain assessment tool in children with CI.
Methods:
Children with CI scheduled for elective surgery were studied. The FLACC was revised to include specific descriptors and parent-identified, unique behaviors for individual children. The child's ability to self-report pain was evaluated. Postoperatively, two nurses scored pain using the revised FLACC scale before and after analgesic administration, and, children self-reported a pain score, if able. Observations were videotaped and later viewed by experienced nurses blinded to analgesic administration.
Results:
Eighty observations were recorded in 52 children aged 4-19 years. Twenty-one parents added individualized pain behaviors to the revised FLACC. Interrater reliability was supported by excellent intraclass correlation coefficients (ICC, ranging from 0.76 to 0.90) and adequate kappa statistics (0.44-0.57). Criterion validity was supported by the correlations between FLACC, parent, and child scores (rho = 0.65-0.87; P < 0.001). Construct validity was demonstrated by the decrease in FLACC scores following analgesic administration (6.1 +/- 2.6 vs 1.9 +/- 2.7; P < 0.001).
Conclusions:
Findings support the reliability and validity of the FLACC as a measure of pain in children with CI.
