Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài:A randomised comparison of a four- and a five-point scale version of the Norwegian Function Assessment Scale | BioMed Central Health and Quality of Life Outcomes Research A randomised comparison of a four- and a five-point scale version of the Norwegian Function Assessment Scale Nina 0sterâs 1 Pâl Gulbrandsen2 3 Andrew Garratt4 Jurate Saltyte Benth2 3 Fredrik A Dahl2 Bârd Natvig1 and Soren Brage1 Open Access Address 1Section of Occupational Health and Social Insurance Medicine Institute of General Practice and Community Health Faculty of Medicine University of Oslo Norway 2Helse 0st Health Services Research Centre Akershus University Hospital Norway 3Faculty of Medicine University of Oslo Norway and institute of Health Management and Health Economics University of Oslo Norway Email Nina 0sterâs - Pâl Gulbrandsen - Andrew Garratt - Jurate Saltyte Benth - jurate@ Fredrik A Dahl - Bârd Natvig - Soren Brage - Corresponding author Published 15 February 2008 Received 4 October 2007 Health and Quality of Life Outcomes 2008 6 14 doi l477-7525-6-l4 Accepted 15 February 2008 This article is available from http content 6 l l4 2008 Osterảs et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract__ Background There is variation in the number of response alternatives used within health-related questionnaires. This study compared a four-and a five-point scale version of the Norwegian Function Assessment Scale NFAS by evaluating data quality internal consistency and validity. Methods All inhabitants in seven birth cohorts in the Ullensaker municipality of Norway were .
