Federal data sets covering district court and appellate court civil cases for cases terminating in fiscal years 1988 through 2000 are analyzed. Appeals are filed in 10.9 percent of filed cases, and 21.0 percent of cases if one limits the sample to cases with a definitive judgment for plaintiff or defendant. The appeal rate is 39.6 percent in tried cases compared to 10.0 percent of nontried cases. For cases with definitive judgments, the appeal filing rate is 19.0 percent in nontried cases and 40.9 percent in tried cases. Tried cases with definitive judgments are appealed to a conclusion on the merits in 22.7 percent of concluded trials compared to 10.2 percent of concluded nontried cases. Appellate courts affirm and reverse at different rat...