I need to analyse some data collected using the SF-12 Version 1 with the UK adaptation of 1 extra category for 'Social Function' (6 instead of 5) compared to the original US version.
Following extensive reading and literature searching I am unable to find the scoring algorithm for this UK SF-12 Version 1. I have found the US algorithm from Ware et al, 1995, but this only has 4 SF categories (and corresponding coefficients) where I need 5.
Through the literature search I identified a paper from 1997 by Jenkinson, C. Development and testing of the UK SF-12 (short form health survey). Journal Health Services Research Policy 2(1) 14-18. From the abstract available online it looks as though this might provide the coefficients for the adapted UK version. However, it is not available in our university library system so I have requested through inter-library loan - but I am not sure how long this will take and I need to complete this work within the next week.
If anyone can direct me to the appropriate algorithm, with the correct number of coefficients or link me to this article it would be much appreciated.
Many thanks and kind regards
Jenny
Dr. Jenny Patterson Midwife and Research Fellow School of Health and Social Care Edinburgh Napier University