Association between total fibrinogen levels and fibrinogen γ′ levels. Levels were measured in units per deciliter. n = 471 control subjects. Regression coefficients were β_HxHx (1.12; 95% CI, 1.01-1.23), β_H2Hx (1.05; 95% CI, 0.96-1.14), β_H2H2 (0.92; 95% CI, 0.56-1.27), and β_all (1.13; 95% CI, 1.00-1.22). Correlation coefficients were R_HxHx 0.78, R_H2Hx 0.85, R_H2H2 0.72, and R_all 0.74. ♦ (dashed line) indicates FGG HxHx; □ (dotted line) FGG H2Hx; ▴ (dash/dot line), FGG H2H2; (solid line), all.