Spanish version of the Swedish Occupational Fatigue Inventory (SOFI): Factorial replication, reliability and validity

A reliable and valid instrument for the multidimensional evaluation of work-related fatigue may be of great importance to an understanding of the origin and development of work-related disorders. This study presents the adaptation to Spanish of the SOFI, a highly promising instrument, given the lack of multidimensional instruments adapted to the Spanish language for the measurement of work-related fatigue.