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Western Journal of Nursing Research
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Time Series Analysis of Physiological Response During ICU Visitation

Joseph T. Hepworth

Arizona State University, College of Nursing, Tempe, AZ

Sherry Garrett Hendrickson

University of Texas at Austin, School of Nursing, Austin, TX

Jean Lopez

Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ

Time series analysis (TSA) is an important statistical procedure for clinical nursing research. The current paucity of nursing research reports using TSA may be due to unfamiliarity with this technique. In this article, TSA is compared with the ordinary least squares regression model; validity concerns of time series designs are discussed; and concomitant and interrupted TSA of data collected on the effects of family visitation on intracranial pressure (ICP), heart rate, and blood pressure of patients in ICUs are presented. The concomitant TSA of the effect offamily on ICP suggested thatfamily presence tended to be associated with decreased ICR Interrupted TSA indicated the effect offamily on heart rate and blood pressure was not as consistent: The overall effect on blood pressure appeared to be negligible, and heart rate may increase overall. Restrictive visiting policies, once typical of intensive care units, should be reconsidered.

Western Journal of Nursing Research, Vol. 16, No. 6, 704-717 (1994)
DOI: 10.1177/019394599401600608
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