headneck              package:Fahrmeir              R Documentation

_H_e_a_d _a_n_d _N_e_c_k _C_a_n_c_e_r _d_a_t_a

_D_e_s_c_r_i_p_t_i_o_n:

     Data from a head and neck cancer study where time was discretized
     by  one-month intervals.

_U_s_a_g_e:

     data(headneck)

_F_o_r_m_a_t:

     A data frame with 47 observations on the following 4 variables.

     _m_o_n_t_h a numeric vector

     _a_t_r_i_s_k a numeric vector, number at risk

     _d_e_a_t_h_s a numeric vector

     _w_i_t_h_d_r_a_w_a_l_s a numeric vector

_D_e_t_a_i_l_s:

_S_o_u_r_c_e:

     Ludwig Fahrmeir, Gerhard Tutz (1994):  Multivariate Statistical
     Modelling Based on Generalized Linear Models. Springer Series in
     Statistics.  Springer Verlag. New-York  Berlin Heidelberg

_R_e_f_e_r_e_n_c_e_s:

_E_x_a_m_p_l_e_s:

     str(headneck) 
     summary(headneck)
     with(headneck, {plot(month, atrisk, type="s");
                     lines(month, deaths, type="s", col="red");
                     lines(month, withdrawals, type="S", col="green")})

