Figure 5.
Relationship between size of region at risk and size of MI. Graph shows individual values and linear regression lines for 4 groups. In all groups, infarct size was positively and linearly related to risk region size. Linear regression equations and R values were as follows: group I, y=0.026+0.56x, R=0.80; group II, y=–0.087+0.43x, R=0.83; group III, y=–0.047+0.67x, R=0.92; group IV, y=–0.087+0.39x, R=0.79. ANCOVA demonstrated that regression line for group II was significantly different from that of groups I and III and that regression line for group IV was significantly different from that of groups I and III, respectively (P<,0.05 for each comparison).