MEDAR <MDXR> CHANGES FISCAL YEAR Medar Inc said it changed the end of its fiscal year to December 31 from March 31. The company, in reporting its annual results, said the change was made to bring its financial reporting in phase with the order cycle of its major customers. Medar earlier said it lost 558,800 dlrs in its final 1986 quarter, compared to a loss of 469,200 dlrs in the same 1985 quarter.