NAME:	Calcium, inorganic phosphorus and alkaline phosphatase levels in elderly patients	
TYPE:	Retrospective chart review
SIZE:	178 records by 8 variables

DESCRIPTIVE ABSTRACT:
Each record contains the results of a laboratory analysis of calcium, 
inorganic phosphorous, and alkaline phosphatase.  The variable cammol 
is measured as millimoles per liter.  Phosmol is inorganic phosphorous 
in millimoles per liter.  Alkphos is meauring alkaline phosphatase in 
international units per liter.  The purpose of the study was to 
determine if significant gender differences exist in the mean values 
of calcium, inorganic phosphorus, and alkaline phosphatase in 
subjects over age 65.  A second purpose was to determine if analytical 
variation between laboratoreis would affect the mean values of the study variables.  


DATA SOURCE:
Used with permission from Joan Boyd, Maria Delost, and John Holcomb (1998).  Boyd and Delost
conducted the retrospective chart review for subjects tested in the greater
Youngstown, OH area.    

DATASET LAYOUT:

Calciumgood.dat

Columns  Variable		Comment
9-11     OBSNO  		Patient Observation Number
20-22    AGE    		Years
32-33    SEX                    1=Male, 2=Female 	             
42-44    ALKPHOS		Alkaline Phosphatase International Units/Liter
54-55    Lab                    Lab:  1=Metpath; 2=Deyor; 3=St. Elizabeth's; 
                                      4=CB Rouche; 5=YOH; 6=Horizon
62-66    CAMMOL			Calcium mmol/L
74-77    PHOS			Inorganic Phosphorus mmol/L
88       AGEGROUP		Age group 1=65-69; 2=70-74; 3=75-79; 4=80-84; 5=85-89 
				Years



PEDAGOGICAL NOTES:
Note this data contains the corrected values from calcium.dat.  
A full description of how to use this data can be found in the 
"Datasets and Stories" article "Teaching Students to Use Summary Statistics and 
Graphics to Clean and Analyze Data" To utilize the grid for obtaining 
psuedo patient records to learn the correct data values, click on 
http://academic.csuohio.edu/holcombj/outlier/bigtable.htm

REFERENCES:
Boyd, J., Delost, M., and Holcomb, J., (1998). "Calcium, phosphorus, 
and alkaline phosphatase laboratory values of elderly subjects,"
Clinical Laboratory Science, 11, 223-227.

SUBMITTED BY:

John P. Holcomb, Jr. 
Cleveland State University
2121 Euclid Ave., RT 1515
Cleveland, OH, 44115-2214
j.p.holcomb@csuohio.edu

Angela Spalsbury
Youngstown State University
One University Plaza
Youngstown, OH 4455
angie@math.ysu.edu