heart               package:nonbinROC               R Documentation

_H_e_a_r_t _d_a_m_a_g_e _d_i_a_g_n_o_s_i_s _a_f_t_e_r _m_y_o_c_a_r_d_i_a_l _i_n_f_a_r_c_t_i_o_n

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

     A data frame giving a series of ordinal measurements of the
     positron emission tomography and magnetic resonance imaging scans
     for the heart tissues of 241 fictitious  patients after myocardial
     infarctions.

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

     data(heart)

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

     This data frame contains the following 2 variables:

     '_P_E_T' gold standard for evaluating the most damage part of the
          heart  (1 = normal, 2 = ischemic, 3 = hibernating, and 4 =
          necrotic)

     '_M_R_I' amount of scarring in the most damaged part of the heart (0
          = normal,  1 = 1-24%, 2 = 25-49%, 3 = 50-74%, 4 = 75-99%, and
          5 = 100% scarring)

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

     Obuchowski, N. A. (2005) Estimating and comparing diagnostic
     tests' accuracy when the gold  standard is not binary. _Academic
     Radiology_, 12, 1198-1204.

