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B16I FREE COMMUNICATION/POSTER CARDIAC AND PULMONARY TOPICS

PRELIMINARY RELIABILITY ESTIMATES OF A HEART DISEASE RISK PERCEPTION INSTRUMENT

Green, J S. FACSM1; Grant, M1; Brizzolara, J1; Belmont, B1

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Medicine & Science in Sports & Exercise: May 2001 - Volume 33 - Issue 5 - p S62
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The purpose of this investigation was to document the reliability of a newly constructed instrument designed to measure the perception of heart disease risk in a population of college-age men and women. Subjects were 484 men and women ( age = 21.0 ± 4.0) enrolled in physical fitness or business classes at four-year universities. It should be noted that the physical fitness classes were composed of students of numerous majors, precluding a “fitness” sampling bias. The perception instrument was composed of a series of 40 questions in which the subjects were asked to rate their perception of causality between contemporary heart disease risk markers and a heart attack. Items on the instrument also measured the perception of causality between risk markers thought to be causally related. Subjects were instructed to rate the strength of causality of each relationship on a 10-point scale with 10 indicating the strongest causality. If they did not understand a term used in the question or were unfamiliar with a particular causal relationship, they were instructed to mark an “X” in the rating blank as opposed to making a guess. Reliability analysis was conducted using Chronbach's α, a technique that represents a mean of the Pearson correlations for all possible “halves” of the instrument. Results showed Chronbach's α for the instrument to be .943, indicating good reliability.

©2001The American College of Sports Medicine