Data and source file for applying our newly developed parametric additive hazard model in an examplary application and in a theoretical simulation. The data is taken from the HALLUCA study (see Bollmann, A., Blankenburg, T., Haerting, J., Kuss, O., Schütte, W., Dunst, J., & Neef, H. (2004). Survival of patients in clinical stages I–IIIb of non-small-cell lung cancer treated with radiation therapy alone. Strahlentherapie und Onkologie, 180(8), 488-496.), but has been fully anonymised and has been reduced to provide only the minimum information necessary to apply the parametric additive hazard model. The files with the extension .R is the source file for use with the open statistical software R (The R Foundation of Scientific Computing), the one with the extension .sas is the source file for the statistical software SAS, accordingly.