DMconv                  package:Epi                  R Documentation

_C_o_n_v_e_r_s_i_o_n _t_o _d_i_a_b_e_t_e_s

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

     Data from a randomized intervention study ("Addition") where
     persons with prediabetic conditions are followed up for conversion
     to diabetes (DM). Conversion dates are interval censored. Original
     data are not published yet, so id-numbers have been changed and
     all dates have been randomly perturbed.

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

     data(DMconv)

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

     A data frame with 1519 observations on the following 6 variables.

     '_i_d' Person identifier

     '_d_o_e' Date of entry, i.e. first visit.

     '_d_l_w' Date last seen well, i.e. last visit without DM.

     '_d_f_i' Date first seen ill, i.e. first visit with DM.

     '_g_t_o_l' Glucose tolerance. Factor with levels: 1="IFG" (impaired
          fasting glucose), 2="IGT" (impaired glucose tolerance).

     '_g_r_p' Randomization. Factor with levels: 1="Intervention",
          2="Control".

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

     Signe Saetre Rasmussen, Steno Diabetes Center. The Addition Study.

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

     data(DMconv)
     str(DMconv)
     head(DMconv)

