C:/Documents and Settings/Stephen/Desktop/Biostatistics Library and Program/Biostatistics/McNemarsGroupsCollection.cs

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using System;
using System.Collections.Generic;

namespace StephenAshley.Biostatistics
{
   using NUMBER = Decimal;

   public class McNemarsGroupsCollection : GroupsCollection
   {
      #region *** constructors ***
      public McNemarsGroupsCollection()
         : base()
      {
      }

      // <summary>
      // Creates a <see cref="GroupsCollection"/> with a given capacity.
      // </summary>
      // <param name="capacity">The capacity of the <see cref="GroupsCollection"/>.</param>
      //public McNemarsGroupsCollection(Int32 capacity)
      //   : base(capacity)
      //{
      //}

      public McNemarsGroupsCollection(List<Group> lstGroups)
         : base(lstGroups)
      { }
      #endregion
      #region *** properties ***
      public NUMBER ChiSquared()
      {
         NUMBER decA = groupsArray[0][0];
            NUMBER decB = groupsArray[1][0];
            NUMBER decC = groupsArray[0][1];
            NUMBER decD = groupsArray[1][1];
            NUMBER decX, decY;
            if ((decX = decB + decC) == 0)
               throw new BiostatisticsException(
                  "b + c cannot equal 0.");
            decY = DecMath.Abs(decB - decC) - 1.0m;
            return decY * decY / decX;
      }

      public NUMBER ChiSquaredUnadjusted()
      {
         NUMBER decA = groupsArray[0][0];
            NUMBER decB = groupsArray[1][0];
            NUMBER decC = groupsArray[0][1];
            NUMBER decD = groupsArray[1][1];
            NUMBER decX, decY;
            if ((decX = decB + decC) == 0)
            throw new BiostatisticsException(
               "b + c cannot equal 0.");
            decY = DecMath.Abs(decB - decC);
            return decY * decY / decX;
      }

      public NUMBER p()
      {
         return Convert.ToDecimal(Distributions.ProbabilityChiSq(
               Convert.ToDouble(ChiSquared()), 1));
      }

      public NUMBER pUnadjusted()
      {
         return Convert.ToDecimal(Distributions.ProbabilityChiSq(
                Convert.ToDouble(ChiSquaredUnadjusted()), 1));
      }
      #endregion
   }
}

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