wesdr dataset

Progression of Diabetic Retinopathy

Data derived from the Wisconsin Epidemiological Study of Diabetic Retinopathy.

data(wesdr)

Format

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.

Source

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

References

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.