IGF                   package:nlme                   R Documentation

Radioimmunoassay of IGF-I Protein

Description:

     The 'IGF' data frame has 237 rows and 3 columns.

Format:

     This data frame contains the following columns:

     Lot an ordered factor giving the radioactive tracer lot.

     age a numeric vector giving the age (in days) of the radioactive
          tracer.

     conc a numeric vector giving the estimated concentration of IGF-I
          protein (ng/ml)

Details:

     Davidian and Giltinan (1995) describe data obtained during quality
     control radioimmunoassays for ten different lots of radioactive
     tracer used to calibrate the Insulin-like Growth Factor (IGF-I)
     protein concentration measurements.

Source:

     Davidian, M. and Giltinan, D. M. (1995), _Nonlinear Models for
     Repeated Measurement Data_,  Chapman and Hall, London.

     Pinheiro, J. C. and Bates, D. M. (2000), _Mixed-Effects Models in
     S and S-PLUS_, Springer, New York.  (Appendix A.11)

Examples:

     data(IGF)

