Validity and reliability of the Polish adaptation of the Health-Related Hardiness Scale – the first confirmatory factor analysis results for a commonly used scale

BackgroundThe Health-Related Hardiness Scale (HRHS) developed by Pollock is one of the most widely used measures to assess the construct of hardiness in chronic diseases. However, the original structure of the scale has been investigated only with exploratory factor analysis, and there have been no studies investigating the structure of the scale using a confirmatory approach, so significant doubts about the validity of the scale could be raised.Participants and procedureA total of 450 participants took part in the study, with the majority suffering from chronic diseases. A Polish ver-sion of the HRHS, the Sense of Coherence questionnaire (SOC-29), the Resiliency Assessment Scale (SPP-25), …