urine: Urine Analysis Data
In SMPracticals: Practicals for Use with Davison (2003) Statistical Models
urine R Documentation
Urine Analysis Data
Description
The 'urine' data frame has 79 rows and 7 columns.
79 urine specimens were analyzed in an effort to determine if
certain physical characteristics of the urine might be related to
the formation of calcium oxalate crystals. Cases 1 and 55 have
missing covariates.
Usage
data(urine)
Format
This data frame contains the following columns:
- r
Indicator of the presence of calcium oxalate crystals.
- gravity
The specific gravity of the urine.
- ph
The pH reading of the urine.
- osmo
The osmolarity of the urine. Osmolarity is proportional to
the concentration of molecules in solution.
- cond
The conductivity of the urine. Conductivity is
proportional to the concentration of charged ions in
solution.
- urea
The urea concentration in millimoles per litre.
- calc
The calcium concentration in millimoles per litre.
Source
Andrews, D.F. and Herzberg, A.M. (1985) Data: A Collection of
Problems from Many Fields for the Student and Research Worker.
Springer-Verlag. Pages 249–251.
Examples
data(urine)
glm(r~gravity+ph+osmo+cond+urea+calc,binomial,data=urine,subset=-c(1,55))
SMPracticals documentation built on May 29, 2024, 12:19 p.m.
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Urine Analysis Data
Description
The 'urine' data frame has 79 rows and 7 columns.
79 urine specimens were analyzed in an effort to determine if certain physical characteristics of the urine might be related to the formation of calcium oxalate crystals. Cases 1 and 55 have missing covariates.
Usage
data(urine)Format
This data frame contains the following columns:
- r
Indicator of the presence of calcium oxalate crystals.
- gravity
The specific gravity of the urine.
- ph
The pH reading of the urine.
- osmo
The osmolarity of the urine. Osmolarity is proportional to the concentration of molecules in solution.
- cond
The conductivity of the urine. Conductivity is proportional to the concentration of charged ions in solution.
- urea
The urea concentration in millimoles per litre.
- calc
The calcium concentration in millimoles per litre.
Source
Andrews, D.F. and Herzberg, A.M. (1985) Data: A Collection of Problems from Many Fields for the Student and Research Worker. Springer-Verlag. Pages 249–251.
Examples
data(urine)
glm(r~gravity+ph+osmo+cond+urea+calc,binomial,data=urine,subset=-c(1,55))
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