anchor: The means of maintaining the database and the details that it contained had changed as the number of reported incidents at the university had grown--from 3 or 4 a month in 1993 to between 50 and 60 a month in early 1997--and as the database's value as a management tool became more apparent.
positive: The university had more incidents in 1997 than in 1993.
negative: The university had the same number of incidents in 1993 and 1997.