print.aareg             package:survival             R Documentation

_P_r_i_n_t _a_n _a_a_r_e_g _o_b_j_e_c_t

_D_e_s_c_r_i_p_t_i_o_n:

     Print out a fit of Aalen's additive regression model

_U_s_a_g_e:

     ## S3 method for class 'aareg':
     print(x, maxtime, test=c("aalen", "nrisk"),scale=1,...)

_A_r_g_u_m_e_n_t_s:

       x: the result of a call to the 'aareg' function 

 maxtime: the upper time point to be used in the test for non-zero
          slope 

    test: the weighting to be used in the test for non-zero slope. The
          default weights are based on the variance of each
          coefficient, as a function of time.  The alternative weight
          is proportional to the number of subjects still at risk at
          each time point. 

   scale: scales the coefficients.   For some data sets, the
          coefficients of the Aalen model will be very small (10-4);
          this simply multiplies the printed values by a constant, say
          1e6, to make the printout easier to read.

     ...: for future methods

_D_e_t_a_i_l_s:

     The estimated increments in the coefficient estimates can become
     quite unstable near the end of follow-up, due to the small number
     of observations still at risk in a data set. Thus, the test for
     slope will sometimes be more powerful if this last `tail' is
     excluded.

_V_a_l_u_e:

     the calling argument is returned.

_S_i_d_e _E_f_f_e_c_t_s:

     the results of the fit are displayed.

_R_e_f_e_r_e_n_c_e_s:

     Aalen, O.O. (1989). A linear regression model for the analysis of
     life times. Statistics in Medicine, 8:907-925.

_S_e_e _A_l_s_o:

     aareg

