

tccov(event)                                 R Documentation

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_c_e_s_s

_U_s_a_g_e_:

     tccov(y, x, id)

_A_r_g_u_m_e_n_t_s_:

       y: Vector of times.

       x: Vector covariate.

      id: Vector of corresponding individual identifiers for
          who had which sequence of times.

_V_a_l_u_e_:

     `tccov' creates a vector of length `sum(y)' of time-
     constant covariates for use with `ehr'. `id' must be
     numbered consecutively. `x' must have one value for
     each distinct `id',

_A_u_t_h_o_r_(_s_)_:

     J.K. Lindsey

_S_e_e _A_l_s_o_:

     `bp', `ehr', `ident', `pp', `tpast', `ttime', `tvcov'.

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

     y <- c(5,3,2,4)
     id <- c(1,1,2,2)
     x <- c(5.2,3.1)
     xcov <- tccov(y, x, id)
     xcov

