Critical Care Research: Part 1Reliability of Cough Effort Intensity Assessment by NursesHanneman, Sandra K. PhD, RN, FAAN; Cozart, Huberta T. MS, RN; Swank, Paul PhDAuthor Information Associate Dean for Research and Evaluation, School of Nursing, The University of Texas Health Science Center–Houston, Houston, Texas (Hanneman) Instructor, Prairie View A&M University College of Nursing, Houston, Texas (Cozart) Advanced Quantitative Methodologist, Center for Nursing Research, School of Nursing, The University of Texas Health Science Center–Houston, Houston, Texas (Swank) This study was funded with the Texas Woman's University Research Enhancement Award and the College of Nursing Parry Scholar Research Award. Critical Care Nursing Quarterly: February 2002 - Volume 24 - Issue 4 - p 1-13 Buy Abstract This study examines the dependability of naïve nursing assessments of cough effort intensity (CEI) in unstable, but realistic, clinical situations. Sixty-two medical and surgical patients were recruited while on mechanical ventilation and studied on 3 consecutive days. Each day, three nurses measured two CEI ratings 3 minutes apart. Using a generalizability theory approach, the researchers estimated multiple sources of error in the measurement of CEI. Patient and day of measurement represented systematic variance, planned to increase variability in CEI. Time of assessment and nurse rater represented random sources of error. The design accounted for all sources of measurement error in the model. Variability in CEI was accounted for by individual patient differences and raters nested within patient day. The dependability coefficient was .39. Thus, the investigators concluded that naïve nurse assessments of CEI are undependable in clinical situations. Copyright © 2002 by Aspen Publishers, Inc.