In DCCT MS7exf10, what do the “half-point” codes used in changex2 and globalx2?
A. For ratings that seem to fall between categories, a plus (+) sign is used to indicate that the rating is closer to the next higher category (somewhat impaired) and a minus (-) is used to indicate that the rating is` closer to the next lower category (somewhat less impaired). To accommodate these intermediate ratings, the following “extended scale” is used in the final dataset: 1=’1′; 2=’1+’; 3=’2-‘; 4=’2′; 5=’2+’; 6= ‘3-‘; 7=’3′; 8=’3+’; 9=’4=4-‘; 10=’4′; 11=’4+’; 12=’5-‘; 13=’5′; 14=’5+’; 15=6-‘; 16=’6′; 17=’6+’; 18=’7′.
