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Figure 1 Thrombin-antithrombin complex (upper panel) and fibrinogen plasma levels (lower panel) (mean ± SEM) on days 1 and 10 and at 3 months in patients with unstable angina or acute myocardial infarction with (dashed bars) or without in-hospital angina (open bars). Also shown are values from a control group. Thrombin-antithrombin complex values at the three stages were higher in patients than they were in the control group (see text). There were significant (*) intragroup differences (ANOVA) in the two subsets as well as a trend towards intergroup differences (ANOVA, p < 0.077), mainly because of the higher values at 10 days in patients with in-hospital angina than in those without (p < 0.013). Fibrinogen levels were also higher in patients than they were in the control group and increased significantly at 10 days to a comparable extent in patients with or without in-hospital angina. Intragroup differences (ANOVA) were significant (*). ANOVA = analysis of variance.