Nield M, Kim M J
Sharp Memorial Hospital, San Diego, CA.
Nurs Res. 1991 Jan-Feb;40(1):17-9.
The reliability of magnitude estimation with an open scale was evaluated in a physiologically stable population of adults with chronic respiratory disease who experienced chronic dyspnea. Magnitude estimation was used to measure one dimension of dyspnea, perceptual sensitivity. The relationship between external inspiratory resistive loads (stimuli) and numbers that reflected the perceived intensity of the breathing effort (response) as expressed by a power function was measured on three visits 3 to 5 days apart. The correlations of the exponent of the power function between visits were high and stable.
在患有慢性呼吸困难的生理稳定的成年慢性呼吸道疾病患者群体中，评估了使用开放量表进行量级估计的可靠性。量级估计用于测量呼吸困难的一个维度，即感知敏感性。在相隔3至5天的三次就诊中，测量了外部吸气阻力负荷（刺激）与反映呼吸努力感知强度的数字（反应）之间的关系，该关系由幂函数表示。就诊之间幂函数指数的相关性高且稳定。
