OC Register - "DataQuick revises its entire housing history" (2-14-07)

"The changes include a broader definition of a home sale and a new way to calculate the median price. Figures back to 1988 were revamped. All told, DataQuick's remodeling didn't change its O.C. median price calculation much, with the revised prices 0.8% lower since '88 than the old numbers. More liberal acceptance of unorthodox sales bumped up sales volumes by an average of 9.1%."