Rasch analysis of the Perceived Stress Scale: Transformation from an ordinal to a linear measure.
J Health Psychol
; 24(8): 1070-1081, 2019 07.
Article
en En
| MEDLINE
| ID: mdl-28810395
ABSTRACT
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 (χ2(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.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Escalas de Valoración Psiquiátrica
/
Psicometría
/
Estrés Psicológico
Tipo de estudio:
Prognostic_studies
Límite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Health Psychol
Asunto de la revista:
PSICOLOGIA
Año:
2019
Tipo del documento:
Article
País de afiliación:
Nueva Zelanda