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Do different scales measure the same construct? Three Sense of Coherence scales.

  • Martin Bergström
  • Jan Gassne
  • Kjell Hansson
Publiceringsår: 2009
Språk: Engelska
Sidor: 166-167
Publikation/Tidskrift/Serie: Journal of Epidemiology and Community Health
Volym: 63
Nummer: 2
Dokumenttyp: Artikel i tidskrift
Förlag: BMJ Publishing Group

Abstract english

Background: Different scales claim to measure the

construct ‘‘Sense of Coherence’’. Results from these

scales have been compared without knowing whether

they measure the same construct. This article compares

two versions of Antonovsky’s original scale (SOC-13 and

SOC-29), translated into Swedish, and a three-item scale

(SOC-3) that claims to measure Sense of Coherence.

Methods: The data were analysed in a cross-sectional

setting. The study consisted of university students

studying social work (n=395.

Results: The original scales had no distribution problems

in differentiating Sense of Coherence. The SOC-3 had

severe distribution problems. The two versions of the

original Sense of Coherence scale had an acceptable

reliability (Cronbach’s a; SOC-29=0.93, SOC-13=0.89).

The SOC-3 scale did not have an acceptable reliability

(Cronbach’s a=0.39). SOC-29 and SOC-13 had a high

intercorrelation (r=0.96, p,0.001). The SOC-3 significantly

correlated with SOC-29 (r=20.72, p,0.001) and

SOC-13 (r=20.67, p,0.001), but the magnitude was

significantly lower than the intercorrelation between SOC-

29 and SOC-13 (Fisher’s z-transformation, p,0.001.

Conclusions: Because scales that claim to measure the

same construct are not always interchangeable,

researchers should make sure they compare results from

studies that use the same scales.


  • Public Health, Global Health, Social Medicine and Epidemiology
  • sense of coherence
  • sense of coherence scales


  • ISSN: 1470-2738
Jan Gassne. Foto: Patrik Hekkala
E-post: jan [dot] gassne [at] soch [dot] lu [dot] se



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