Item reduction and psychometric validation of the Oily Skin Self Assessment Scale (OSSAS) and the Oily Skin Impact Scale (OSIS).

@article{Arbuckle2009ItemRA,
  title={Item reduction and psychometric validation of the Oily Skin Self Assessment Scale (OSSAS) and the Oily Skin Impact Scale (OSIS).},
  author={Robert A Arbuckle and Marci J Clark and Jane A Harness and Nicola Bonner and Jane Anne Scott and Zoe Diana Draelos and Ronald L Rizer and Yating Yeh and Kati Copley-Merriman},
  journal={Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research},
  year={2009},
  volume={12 5},
  pages={828-37}
}
INTRODUCTION Developed using focus groups, the Oily Skin Self Assessment Scale (OSSAS) and Oily Skin Impact Scale (OSIS) are patient-reported outcome measures of oily facial skin. OBJECTIVE The aim of this study was to finalize the item-scale structure of the instruments and perform psychometric validation in adults with self-reported oily facial skin. METHODS The OSSAS and OSIS were administered to 202 adult subjects with oily facial skin in the United States. A subgroup of 152 subjects… CONTINUE READING

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