INTRODUCTION 
------------

EBM Calculator is designed to calculate relevant statistics for Diagnostic studies, Prospective Studies,
Case Control Studies, and Randomized Control Trials (RCT). This is a palm version of the Stats Calculator.

EBM Calculator uses a shared library called "MathLib". It is needed to perform calculations
that requires more complex functions.

	MathLib is a free shared library that can be used by any OS 2.0+
	Pilot program that needs IEEE 754 double precision math functions.
	It's distributed under the terms of the GNU Library General Public
	License, and is freely available with full source code and documentation
	at the MathLib Information web page (http://www.probe.net/~rhuebner/mathlib.html).
	It is not a part of the EBM Calculator program, and you're not paying
	anything for its use; a copy is simply included in this archive for your
	convenience.


INSTALLATION INTRUCTIONS:
-------------------------

1.  Backup all your information (Synchronize all information to your pc) before proceeding
2.  Unzip the file (ebm.zip) using Winzip

	- you should get three files:  ebmcal.prc, mathlib.prc, and readme.txt
	- ebmcal.prc is the EBM Calculator
	- mathlib.prc is the shared library that EBM Calculator uses
	- readme.txt

3.  Use your install tool or equivalent (HotSync) to load the program and the shared library
    (if you do not already have it installed) in your palm


MANUAL
------

Main Form:  At the startup of the EBM Calculator, you will see four options; Diagnostic Test,
			Prospective Study, Case Control Study, and RCT.  Each option brings you to a different
			form.  The functions of the four forms listed above are exactly the same except for
			Diagnostic Test.

Common Push Button Functions:

Clear Table:
- clears the four values at the top of the form

Get Results:
- calculates the results from the four values at the top and displays it at the bottom of the screen

Main:
- returns to the main form

i:
- information on the units of the form


Diagnostic Test has a extra push button which is used for graphing:  

- To calculate the statistics, enter in the values at the top four fields.
- Select the "Get Results" push button to display the results for the values that you entered.
- To graph the pre-test probability and post-test probability, press the "G" push button


Every form has a save and open/delete function under the file menu.
- Save is for saving your results after calculations has been performed.  You can use the open function to
  view the records anytime.  The record name cannot exceed 20 characters.  The record name will be appended
  with a prefix of either D, P, C, or R.

  D -- Diagnostic
  P -- Prospective
  C -- Case Control
  R -- RCT

- Open is for openning a record that was saved.  When a record is opened you will see 'view mode' at the top
  right corner, this means that you cannot change the inputs.  To perform a new calculation while in 'view mode'
  select 'clear table' and it will clear the inputs and results so you can enter in new ones.

- Delete is in the same form as the Open function.  To delete a record you need to select one and select 'delete'
  at the bottom of the form.  Once a record is deleted it cannot be undeleted.

CONVERSION FROM ODDS RATIO TO NNTs:
- In the main form, select 'Convert ORs to NNTs'
- There are two inputs, Odds Ratio (OR) and Patient's Expected Event Rate (PEER)
  - for Odds Ratio, the input cannot be equal to 1, it must be > 1 or < 1
  - for the PEER, the input cannot be 1 or 0

- Select 'Calculate' to convert ORs to NNTs


DISCLAIMER 
----------


EBM Calculator is created for your own personal use and testing purposes. EBM Calculator is to be used
as a guide only. Medical decisions should NOT be based solely on the results of this program. Although this
program has been tested thoroughly, the accuracy of the information cannot be guaranteed.


VERSION HISTORY
---------------

version v1.1a
- released on August 13, 2001
- function added:  conversion from Odds Ratio to NNTs

version 1.1
- released on June 29, 2001
- functions added:  Save, Open/Delete

version 1.0
- released on Feb. 20, 2001
- added graphing function for Diagnostic

version 1.0
- released on Feb. 15, 2001  (first release)