wesdr                 package:assist                 R Documentation

_W_i_s_c_o_n_s_i_n _E_p_i_d_e_m_i_o_l_o_g_i_c_a_l _S_t_u_d_y _o_f _D_i_a_b_e_t_i_c _R_e_t_i_n_o_p_a_t_h_y

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

     The 'wesdr' data frame has 669 rows and 5 columns of data from an
     ongoing epidemiological study of a cohort of patients receiving
     their medical care in an 11-country area in southern Wisconsin.

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

     data(wesdr)

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

     The progression of diabetic retinopathy was assessed together with
     a number of medical, demographic, ocular and other covariates and
     the retinopathy scores.

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

     This data frame contains the following columns:

     num a numeric vector giving IDs for individuals.

     dur a numeric vector of duration of at baseline in year.

     gly a numeric vector of glycosylated hemoglobin, a measuer of
     hyperglycemia.

     bmi a numeric vecttor of body mass index, weight in kg/(height in
     meter)^2.

     prg a vector of 0 or 1's representing disease progression for each
     individual.

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

     Klein, R., Klein, B. E. K., Moss, S. E., Davis, M. D. and Demets,
     D. L. (1989a). The Wisconsin epidemiologic study of diabetic
     retinopathy. IX. Four year incidence and progression of diabetic
     retinopathy when age at diagnosis is less than 30 years. Arch.
     Ophthalmal. 107, 237-243.

     Klein, R., Klein, B. E. K., Moss, S. E., Davis, M. D. and Demets,
     D. L. (1989b). The Wisconsin epidemiologic study of diabetic
     retinopathy. X. Four year incidence and progression of diabetic
     retinopathy when age at diagnosis is less than 30 years. Arch.
     Ophthalmal. 107, 244-249.

