wesdr                  package:gss                  R Documentation

_P_r_o_g_r_e_s_s_i_o_n _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:

     Data derived from the Wisconsin Epidemiological Study of Diabetic
     Retinopathy.

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

     data(wesdr)

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

     A data frame containing 669 observations on the following
     variables.

       `dur'  Duration of diabetes at baseline, in years.
       `gly'  Percent of glycosylated hemoglobin at baseline.
       `bmi'  Body mass index at baseline.
       `ret'  Binary indicator of retinopathy progression at first follow-up.

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

     Wang, Y. (1997), GRKPACK: Fitting smoothing spline ANOVA models
     for exponential families.  Communications in Statistics -
     Simulations and Computation, 26, 765-782.

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

     Klein, R., Klein, B. E. K., Moss, S. E., Davis, M. D., and DeMets,
     D. L. (1988), Glycosylated hemoglobin predicts the incidence and
     progression of diabetic retinopathy.  Journal of the American
     Medical Association, 260, 2864-2871.

     Klein, R., Klein, B. E. K., Moss, S. E., Davis, M. D., and DeMets,
     D. L. (1989), The Wisconsin Epidemiologic Study of Diabetic
     Retinopathy. X. Four incidence and progression of diabetic
     retinopathy when age at diagnosis is 30 or more years. Archive
     Ophthalmology, 107, 244-249.

     Wahba, G., Wang, Y., Gu, C., Klein, R., and Klein, B. E. K.
     (1995), Smoothing spline ANOVA for exponential families, with
     application to the Wisconsin Epidemiological Study of Diabetic
     Retinopathy. The Annals of Statistics, 23, 1865-1895.

