Fig. 9From: A strategy for optimal fitting of multiplicative and additive hazards regression modelsMartingale residual processes (solid lines) with their confidence bounds (dashed lines) in 4 strata defined according to the quartiles of age distribution obtained with an extended Aalen’s model fitted with a the exponential of age/10 and b the exponential of age/10 with a cut-off at 70 yearsBack to article page