Rasch analysis of the Perceived Stress Scale: Transformation from an ordinal to a linear measure

被引:24
|
作者
Medvedev, Oleg N. [1 ]
Krageloh, Christian U. [1 ]
Hill, Erin M. [2 ]
Billington, Rex [1 ]
Siegert, Richard J. [1 ]
Webster, Craig S. [3 ]
Booth, Roger J. [3 ]
Henning, Marcus A. [3 ]
机构
[1] Auckland Univ Technol, Auckland, New Zealand
[2] West Chester Univ, W Chester, PA USA
[3] Univ Auckland, Auckland, New Zealand
关键词
measurement; Perceived Stress Scale; psychometrics; Rasch analysis; stress; CONSTRUCT-VALIDITY; QUESTIONNAIRE; ADULTS; MODEL; GENDER; SCORES;
D O I
10.1177/1359105316689603
中图分类号
B849 [应用心理学];
学科分类号
040203 ;
摘要
Rasch analysis was conducted to enhance the precision of the widely used 10-item Perceived Stress Scale using two datasets (n = 450 each) randomly selected from samples of the New Zealand general population (n = 1102), New Zealand university students (n = 479) and US university students (n = 396). The best Rasch model fit (chi(2)(27) = 29.92, p = .36), good person separation reliability (.80) and coverage (98%) of the sample by the scale items were achieved when locally dependent items were combined into subtests. These findings support reliability and internal structural validity of the 10-item Perceived Stress Scale. The instrument precision can be further improved using the ordinal-to-linear conversion tables published here.
引用
收藏
页码:1070 / 1081
页数:12
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