Stability of the 13-item sense of coherence (SOC) scale: a longitudinal prospective study in women treated for breast cancer

Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation
Carina LindbladAnn Langius-Eklöf

Abstract

To test the stability of the SOC scale over time and to test the stability of the latent construct in 417 breast cancer patients at the time of diagnosis, after 1 year and in a subsample (n = 80) also 2 and 3 years later. The 13-item SOC scale was firstly tested with mean values and ICC over time and secondly explored with cross-sectional factor analysis, separately for two time points (baseline and after 1 year), followed by a longitudinal factor analyses. Our results provide support for the stability over time (ICC 0.68, effect size 0.06). The cross-sectional factor analysis revealed a modified three-factor and a second-order factor model meeting criteria for goodness of fit. The longitudinal modified second-order factor model confirmed the construct stability character of the SOC scale with an acceptable goodness-of-fit criteria; X (2)/df = 2.91; GFI = 0.87; RMSEA = 0.07; CFI = 0.84; AIC = 962.3. The proportion of variance (R (2)) was 0.42. The SOC scale is stable over time when applied to women with breast cancer. The longitudinal factor analysis gives support of a stable latent construct in the second-order factor model, allowing for merging all items to one scale reflecting the theoretical construct of SOC. Measurement er...Continue Reading

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Citations

Nov 18, 2018·Aging & Mental Health·Ulrich Wiesmann, Hans-Joachim Hannich
Oct 23, 2020·Supportive Care in Cancer : Official Journal of the Multinational Association of Supportive Care in Cancer·Fatemeh LashaniMalihe Nasiri

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