1.   Also, compare operating ratios with comparable statistics from Robert Morris studies, and thoroughly review assets and liabilities including uncollected bills and pending law suits.

2.   He also compares the ratios with those of other companies in the same industry to make sure he is not overpaying.

3.   Its price-to-earnings ratio is high compared to other small drugmakers, he said.

4.   The index compares a ratio of advancing and declining issues to a ratio of total trading for advancers and decliners.