unit KappaUnit; {$mode objfpc}{$H+} interface uses Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs, StdCtrls, ExtCtrls, Buttons, MainUnit, Globals, OutputUnit, FunctionsLib, DictionaryUnit, DataProcs, MatrixLib, ContextHelpUnit; type { TWeightedKappaFrm } TWeightedKappaFrm = class(TForm) Bevel1: TBevel; HelpBtn: TButton; ResetBtn: TButton; ComputeBtn: TButton; CloseBtn: TButton; ObsChk: TCheckBox; ExpChk: TCheckBox; PropChk: TCheckBox; ChiChk: TCheckBox; YatesChk: TCheckBox; SaveChk: TCheckBox; OptionsGroup: TGroupBox; NCasesEdit: TEdit; NCasesLbl: TLabel; RowIn: TBitBtn; RowOut: TBitBtn; ColIn: TBitBtn; ColOut: TBitBtn; DepIn: TBitBtn; DepOut: TBitBtn; RaterAEdit: TEdit; RaterBEdit: TEdit; DepEdit: TEdit; Label1: TLabel; Label2: TLabel; Label3: TLabel; DepLbl: TLabel; VarList: TListBox; InputGroup: TRadioGroup; procedure ColInClick(Sender: TObject); procedure ColOutClick(Sender: TObject); procedure ComputeBtnClick(Sender: TObject); procedure DepInClick(Sender: TObject); procedure DepOutClick(Sender: TObject); procedure FormActivate(Sender: TObject); procedure FormCreate(Sender: TObject); procedure FormShow(Sender: TObject); procedure HelpBtnClick(Sender: TObject); procedure InputGroupClick(Sender: TObject); procedure ResetBtnClick(Sender: TObject); procedure RowInClick(Sender: TObject); procedure RowOutClick(Sender: TObject); procedure VarListSelectionChange(Sender: TObject; User: boolean); private { private declarations } FAutoSized: Boolean; procedure UpdateBtnStates; public { public declarations } end; var WeightedKappaFrm: TWeightedKappaFrm; implementation uses Math; { TWeightedKappaFrm } procedure TWeightedKappaFrm.ResetBtnClick(Sender: TObject); var i: integer; begin RaterAEdit.Text := ''; RaterBEdit.Text := ''; DepEdit.Text := ''; NCasesEdit.Text := ''; InputGroup.ItemIndex := 0; VarList.Clear; for i := 1 to NoVariables do VarList.Items.Add(OS3MainFrm.DataGrid.Cells[i,0]); UpdateBtnStates; end; procedure TWeightedKappaFrm.RowInClick(Sender: TObject); var index: integer; begin index := VarList.ItemIndex; if (index > -1) and (RaterAEdit.Text = '') then begin RaterAEdit.Text := VarList.Items[index]; VarList.Items.Delete(index); end; UpdateBtnStates; end; procedure TWeightedKappaFrm.RowOutClick(Sender: TObject); begin if RaterAEdit.Text <> '' then begin VarList.Items.Add(RaterAEdit.Text); RaterAEdit.Text := ''; end; UpdateBtnStates; end; procedure TWeightedKappaFrm.FormActivate(Sender: TObject); var w: Integer; begin if FAutoSized then exit; // Autosizing is not working for whatever reason... //AutoSize := false; w := MaxValue([HelpBtn.Width, ResetBtn.Width, ComputeBtn.Width, CloseBtn.Width]); HelpBtn.Constraints.MinWidth := w; ResetBtn.Constraints.MinWidth := w; ComputeBtn.Constraints.MinWidth := w; CloseBtn.Constraints.MinWidth := w; //VarList.Constraints.MinHeight := OptionsGroup.Top + OptionsGroup.Height - NCasesEdit.Height - VarList.BorderSpacing.Bottom; Constraints.MinWidth := Width; Constraints.MinHeight := OptionsGroup.Top + OptionsGroup.Height + CloseBtn.Height + 2*CloseBtn.BorderSpacing.Bottom; FAutoSized := true; end; procedure TWeightedKappaFrm.FormCreate(Sender: TObject); begin Assert(OS3MainFrm <> nil); if DictionaryFrm = nil then Application.CreateForm(TDictionaryFrm, DictionaryFrm); end; procedure TWeightedKappaFrm.FormShow(Sender: TObject); begin ResetBtnClick(self); end; procedure TWeightedKappaFrm.HelpBtnClick(Sender: TObject); begin if ContextHelpForm = nil then Application.CreateForm(TContextHelpForm, ContextHelpForm); ContextHelpForm.HelpMessage((Sender as TButton).tag); end; procedure TWeightedKappaFrm.InputGroupClick(Sender: TObject); begin (* case InputGroup.ItemIndex of 0: begin // have to count cases in each row and col. combination NCasesEdit.Enabled := false; NCasesLbl.Enabled := false; DepEdit.Enabled := false; end; 1: begin // frequencies available for each row and column combo DepLbl.Enabled := true; NCasesLbl.Enabled := false; NCasesEdit.Enabled := false; DepEdit.Enabled := true; end; 2: begin // only proportions available - get N size DepLbl.Enabled := true; NCasesEdit.Enabled := true; NCasesLbl.Enabled := true; DepEdit.Visible := Enabled; end; end; *) UpdateBtnStates; (* if (index = 2) then // only proportions available - get N size begin DepLbl.Visible := true; NCasesEdit.Visible := true; NCasesEdit.SetFocus; DepIn.Enabled := true; DepOut.Enabled := false; DepIn.Visible := true; DepOut.Visible := true; DepEdit.Visible := true; NCasesLbl.Visible := true; end; if (index = 1) then // frequencies available for each row and column combo begin DepLbl.Visible := true; NCasesEdit.Visible := false; DepIn.Enabled := true; DepOut.Enabled := false; DepIn.Visible := true; DepOut.Visible := true; DepEdit.Visible := true; NCasesLbl.Visible := false; end; if (index = 0) then // have to count cases in each row and col. combination begin NCasesEdit.Visible := false; DepIn.Visible := false; DepOut.Visible := false; DepEdit.Visible := false; DepLbl.Visible := false; NCasesLbl.Visible := false; end; *) end; procedure TWeightedKappaFrm.ColInClick(Sender: TObject); var index: integer; begin index := VarList.ItemIndex; if (index > -1) and (RaterBEdit.Text = '') then begin RaterBEdit.Text := VarList.Items[index]; VarList.Items.Delete(index); end; UpdateBtnStates; end; procedure TWeightedKappaFrm.ColOutClick(Sender: TObject); begin if RaterBEdit.Text <> '' then begin VarList.Items.Add(RaterBEdit.Text); RaterBEdit.Text := ''; end; UpdateBtnStates; end; procedure TWeightedKappaFrm.ComputeBtnClick(Sender: TObject); var i, j, k, RowNo, ColNo, DepNo, MinRow, MaxRow, MinCol, MaxCol : integer; Row, Col, NoSelected, Ncases, Nrows, Ncols, FObs, df : integer; RowLabels, ColLabels : StrDyneVec; ColNoSelected : IntDyneVec; cellstring : string; outline : string; Freq : IntDyneMat; Prop, Expected, CellChi : DblDyneMat; PObs, ChiSquare, ProbChi, likelihood, Fval, phi : double; yates, aresult : boolean; title : string; Adjchisqr, Adjprobchi, problikelihood, pearsonr : double; pobserved, SumX, SumY, VarX, VarY, obsdiag, expdiag, expnondiag : double; pexpected, MantelHaenszel, MHprob, CoefCont, CramerV, Kappa : double; Frq : integer; weights, quadweights : DblDyneMat; lReport: TStrings; begin if RaterAEdit.Text = '' then begin MessageDlg('Rater A is not specified.', mtError, [mbOK], 0); exit; end; if RaterBEdit.Text = '' then begin MessageDlg('Rater B is not specified.', mtError, [mbOK], 0); exit; end; if InputGroup.ItemIndex > 0 then begin if DepEdit.Text = '' then begin MessageDlg('Dependent variable is not specified.', mtError, [mbOK], 0); exit; end; end; if InputGroup.ItemIndex = 2 then begin if NCasesEdit.Text = '' then begin NCasesEdit.SetFocus; MessageDlg('Total number of cases is not specified.', mtError, [mbOK], 0); exit; end; if not TryStrToInt(NCasesEdit.Text, i) then begin NCasesEdit.SetFocus; MessageDlg('Total number of cases is not a valid number.', mtError, [mbOK], 0); exit; end; end; SetLength(ColNoSelected,NoVariables); yates := false; RowNo := 0; ColNo := 0; DepNo := 0; pobserved := 0.0; pexpected := 0.0; for i := 1 to NoVariables do begin cellstring := OS3MainFrm.DataGrid.Cells[i,0]; if (cellstring = RaterAEdit.Text) then RowNo := i; if (cellstring = RaterBEdit.Text) then ColNo := i; if (cellstring = DepEdit.Text) then DepNo := i; end; (* if ((InputGroup.ItemIndex > 0) and (DepNo = 0)) then begin ShowMessage('ERROR! You must select a dependent variable.'); ColNoSelected := nil; exit; end; if ((RowNo = 0) or (ColNo = 0)) then // || (DepNo == 0)) begin ShowMessage('ERROR! A required variable has not been selected.'); ColNoSelected := nil; exit; end; *) aresult := ValidValue(RowNo,1); if not aresult then begin ColNoSelected := nil; exit; end; aresult := ValidValue(ColNo,1); if not aresult then begin ColNoSelected := nil; exit; end; ColNoSelected[0] := RowNo; ColNoSelected[1] := ColNo; NoSelected := 2; if (InputGroup.ItemIndex > 0) then // for reading proportions or frequencies begin NoSelected := 3; ColNoSelected[2] := DepNo; end; if (InputGroup.ItemIndex = 1) then begin aresult := ValidValue(DepNo,1); if (aresult = false) then begin ColNoSelected := nil; exit; end; end; if (InputGroup.ItemIndex = 2) then begin aresult := ValidValue(DepNo,0); if (aresult = false) then begin ColNoSelected := nil; exit; end; end; // get min and max of row and col numbers MinRow := 1000; MaxRow := 0; MinCol := 1000; MaxCol := 0; for i := 1 to NoCases do begin if (not GoodRecord(i,NoSelected,ColNoSelected)) then continue; Row := round(StrToFloat(OS3MainFrm.DataGrid.Cells[RowNo,i])); Col := round(StrToFloat(OS3MainFrm.DataGrid.Cells[ColNo,i])); if (Row > MaxRow) then MaxRow := Row; if (Row < MinRow) then MinRow := Row; if (Col > MaxCol) then MaxCol := Col; if (Col < MinCol) then MinCol := Col; end; Nrows := MaxRow - MinRow + 1; Ncols := MaxCol - MinCol + 1; // allocate and initialize SetLength(Freq,Nrows+1,Ncols+1); SetLength(Prop,Nrows+1,Ncols+1); SetLength(Expected,Nrows,Ncols); SetLength(CellChi,Nrows,Ncols); SetLength(RowLabels,Nrows+1); SetLength(ColLabels,Ncols+1); for i := 1 to Nrows + 1 do for j := 1 to Ncols + 1 do Freq[i-1,j-1] := 0; for i := 1 to Nrows do RowLabels[i-1] := Format('Row %d', [i]); RowLabels[Nrows] := 'Total'; for j := 1 to Ncols do ColLabels[j-1] := Format('COL. %d', [j]); ColLabels[Ncols] := 'Total'; // get cell data Ncases := 0; if (InputGroup.ItemIndex = 0) then begin // count number of cases in each row and column combination for i := 1 to NoCases do begin if (not GoodRecord(i,NoSelected,ColNoSelected)) then continue; Ncases := Ncases + 1; Row := round(StrToFloat(OS3MainFrm.DataGrid.Cells[RowNo,i])); Col := round(StrToFloat(OS3MainFrm.DataGrid.Cells[ColNo,i])); Row := Row - MinRow + 1; Col := Col - MinCol + 1; Freq[Row-1,Col-1] := Freq[Row-1,Col-1] + 1; end; end; if (InputGroup.ItemIndex = 1) then // read frequencies data from grid begin for i := 1 to NoCases do begin if (not GoodRecord(i,NoSelected,ColNoSelected)) then continue; Row := round(StrToFloat(OS3MainFrm.DataGrid.Cells[RowNo,i])); Col := round(StrToFloat(OS3MainFrm.DataGrid.Cells[ColNo,i])); Row := Row - MinRow + 1; Col := Col - MinCol + 1; FObs := round(StrToFloat(OS3MainFrm.DataGrid.Cells[DepNo,i])); Freq[Row-1,Col-1] := Freq[Row-1,Col-1] + FObs; Ncases := Ncases + FObs; end; end; if (InputGroup.ItemIndex = 2) then // get no. of cases and proportions for each cell begin Ncases := StrToInt(NCasesEdit.Text); for i := 1 to NoCases do begin if (not GoodRecord(i,NoSelected,ColNoSelected)) then continue; Row := round(StrToFloat(OS3MainFrm.DataGrid.Cells[RowNo,i])); Col := round(StrToFloat(OS3MainFrm.DataGrid.Cells[ColNo,i])); Row := Row - MinRow + 1; Col := Col - MinCol + 1; PObs := round(StrToFloat(OS3MainFrm.DataGrid.Cells[DepNo,i])); Frq := round(PObs * Ncases); Fval := PObs * Ncases; if (Fval - Frq < 0.5) then Frq := round(Fval) else Frq := ceil(Fval); Freq[Row-1,Col-1] := Freq[Row-1,Col-1] + Frq; end; end; Freq[Nrows,Ncols] := Ncases; // Now, calculate expected values // Get row totals first for i := 1 to Nrows do begin for j := 1 to Ncols do begin Freq[i-1,Ncols] := Freq[i-1,Ncols] + Freq[i-1,j-1]; end; end; // Get col totals next for j := 1 to Ncols do begin for i := 1 to Nrows do begin Freq[Nrows,j-1] := Freq[Nrows,j-1] + Freq[i-1,j-1]; end; end; // Then get expected values and cell chi-squares ChiSquare := 0.0; Adjchisqr := 0.0; if ((YatesChk.Checked) and (Nrows = 2) and (Ncols = 2)) then yates := true; for i := 1 to Nrows do begin for j := 1 to Ncols do begin Expected[i-1,j-1] := Freq[Nrows,j-1] * Freq[i-1,Ncols] / Ncases; if (Expected[i-1,j-1] > 0.0) then CellChi[i-1,j-1] := sqr(Freq[i-1,j-1] - Expected[i-1,j-1]) / Expected[i-1,j-1] else begin MessageDlg('Zero expected value found.', mtError, [mbOK], 0); CellChi[i-1,j-1] := 0.0; end; ChiSquare := ChiSquare + CellChi[i-1,j-1]; end; end; df := (Nrows - 1) * (Ncols - 1); if (yates = true) then // 2 x 2 corrected chi-square begin Adjchisqr := abs((Freq[0,0] * Freq[1,1]) - (Freq[0,1] * Freq[1,0])); Adjchisqr := sqr(Adjchisqr - Ncases / 2.0) * Ncases; // numerator Adjchisqr := Adjchisqr / (Freq[0,2] * Freq[1,2] * Freq[2,0] * Freq[2,1]); Adjprobchi := 1.0 - chisquaredprob(Adjchisqr,df); end; ProbChi := 1.0 - chisquaredprob(ChiSquare,df); // prob. larger chi //Print results to output form lReport := TStringList.Create; try lReport.Add('CHI-SQUARE ANALYSIS RESULTS FOR ' + RaterAEdit.Text + ' AND ' + RaterBEdit.Text); lReport.Add('No. of Cases = %d', [Ncases]); lReport.Add(''); // print tables requested by use if (ObsChk.Checked) then begin IntArrayPrint(Freq, Nrows+1, Ncols+1, 'Frequencies', RowLabels, ColLabels, 'OBSERVED FREQUENCIES', lReport); lReport.Add('------------------------------------------------------------------------------'); lReport.Add(''); end; if (ExpChk.Checked) then begin outline := 'EXPECTED FREQUENCIES'; MatPrint(Expected, Nrows, Ncols, outline, RowLabels, ColLabels, NoCases, lReport); lReport.Add('------------------------------------------------------------------------------'); lReport.Add(''); end; if (PropChk.Checked) then begin outline := 'ROW PROPORTIONS'; for i := 1 to Nrows + 1 do begin for j := 1 to Ncols do begin if (Freq[i-1,Ncols] > 0.0) then Prop[i-1,j-1] := Freq[i-1,j-1] / Freq[i-1,Ncols] else Prop[i-1,j-1] := 0.0; end; if (Freq[i-1,Ncols] > 0.0) then Prop[i-1,Ncols] := 1.0 else Prop[i-1][Ncols] := 0.0; end; MatPrint(Prop, Nrows+1, Ncols+1, outline, RowLabels, ColLabels, NoCases, lReport); lReport.Add('------------------------------------------------------------------------------'); lReport.Add(''); outline := 'COLUMN PROPORTIONS'; for j := 1 to Ncols + 1 do begin for i := 1 to Nrows do begin if (Freq[Nrows,j-1] > 0.0) then Prop[i-1,j-1] := Freq[i-1,j-1] / Freq[Nrows,j-1] else Prop[i-1,j-1] := 0.0; end; if (Freq[Nrows,j-1] > 0.0) then Prop[Nrows][j-1] := 1.0 else Prop[Nrows,j-1] := 0.0; end; MatPrint(Prop, Nrows+1, Ncols+1, outline, RowLabels, ColLabels, NoCases, lReport); lReport.Add('------------------------------------------------------------------------------'); lReport.Add(''); outline := 'PROPORTIONS OF TOTAL N'; for i := 1 to Nrows + 1 do for j := 1 to Ncols + 1 do Prop[i-1,j-1] := Freq[i-1,j-1] / Ncases; Prop[Nrows,Ncols] := 1.0; MatPrint(Prop, Nrows+1, Ncols+1, outline, RowLabels, ColLabels, NoCases, lReport); lReport.Add('------------------------------------------------------------------------------'); lReport.Add(''); end; if (ChiChk.Checked) then begin outline := 'CHI-SQUARED VALUE FOR CELLS'; MatPrint(CellChi, Nrows, Ncols, outline, RowLabels, ColLabels, NoCases, lReport); lReport.Add('------------------------------------------------------------------------------'); lReport.Add(''); end; lReport.Add(''); lReport.Add('Chi-square: %.3f with D.F. %d. Prob. > value %.3f', [ChiSquare, df, ProbChi]); lReport.Add(''); if yates then lReport.Add('Chi-square using Yates correction %.3f and Prob > value %.3f', [Adjchisqr, Adjprobchi]); likelihood := 0.0; for i := 0 to Nrows - 1 do for j := 0 to Ncols - 1 do likelihood := likelihood + Freq[i,j] * (ln(Expected[i,j] / Freq[i,j])); likelihood := -2.0 * likelihood; problikelihood := 1.0 - chisquaredprob(likelihood,df); lReport.Add('Likelihood Ratio %.3f with prob. > value %.4f', [likelihood, problikelihood]); lReport.Add(''); phi := sqrt(ChiSquare / Ncases); lReport.Add('phi correlation: %.4f', [phi]); lReport.Add(''); pearsonr := 0.0; SumX := 0.0; SumY := 0.0; VarX := 0.0; VarY := 0.0; for i := 0 to Nrows - 1 do SumX := SumX + ( (i+1) * Freq[i,Ncols] ); for j := 0 to Ncols - 1 do SumY := SumY + ( (j+1) * Freq[Nrows,j] ); for i := 0 to Nrows - 1 do VarX := VarX + ( ((i+1)*(i+1)) * Freq[i,Ncols] ); for j := 0 to Ncols - 1 do VarY := VarY + ( ((j+1)*(j+1)) * Freq[Nrows,j] ); VarX := VarX - ((SumX * SumX) / Ncases); VarY := VarY - ((SumY * SumY) / Ncases); for i := 0 to Nrows - 1 do for j := 0 to Ncols - 1 do pearsonr := pearsonr + ((i+1)*(j+1) * Freq[i,j]); pearsonr := pearsonr - (SumX * SumY / Ncases); pearsonr := pearsonr / sqrt(VarX * VarY); lReport.Add('Pearson Correlation r = %6.4f', [pearsonr]); lReport.Add(''); MantelHaenszel := (Ncases-1) * (pearsonr * pearsonr); MHprob := 1.0 - chisquaredprob(MantelHaenszel,1); lReport.Add('Mantel-Haenszel Test of Linear Association: %.3f with probability > value = %.4f', [MantelHaenszel, MHprob]); lReport.Add(''); CoefCont := sqrt(ChiSquare / (ChiSquare + Ncases)); lReport.Add('The coefficient of contingency: %.3f', [CoefCont]); lReport.Add(''); if (Nrows < Ncols) then CramerV := sqrt(ChiSquare / (Ncases * ((Nrows-1)))) else CramerV := sqrt(ChiSquare / (Ncases * ((Ncols-1)))); lReport.Add('Cramers V: %.3f', [CramerV]); // kappa if (Nrows = Ncols) then begin obsdiag := 0.0; expdiag := 0.0; for i := 0 to Nrows - 1 do begin obsdiag := obsdiag + Freq[i,i]; expdiag := expdiag + Expected[i,i]; end; expnondiag := Ncases - expdiag; Kappa := (obsdiag - expdiag) / expnondiag; lReport.Add(''); lReport.Add('Unweighted Kappa: %.4f', [Kappa]); // get linear weights SetLength(weights,Nrows,Ncols); SetLength(quadweights,Nrows,Ncols); for i := 0 to Nrows - 1 do begin for j := 0 to Ncols - 1 do begin weights[i,j] := 0.0; quadweights[i,j] := 0.0; end; end; for i := 0 to Nrows - 1 do begin for j := 0 to Ncols - 1 do begin weights[i,j] := 1.0 - (abs((i-j)) / (Nrows-1)); quadweights[i,j] := 1.0 - ( abs((i-j)*(i-j)) / ((Nrows-1)*(Nrows-1)) ); end; end; outline := 'Observed Linear Weights'; MatPrint(weights, Nrows, Ncols, outline, RowLabels, ColLabels, NoCases, lReport); lReport.Add('------------------------------------------------------------------------------'); lReport.Add(''); outline := 'Observed Quadratic Weights'; MatPrint(quadweights, Nrows, Ncols, outline, RowLabels, ColLabels, NoCases, lReport); lReport.Add('------------------------------------------------------------------------------'); lReport.Add(''); for i := 0 to Nrows - 1 do begin for j := 0 to Ncols - 1 do begin pobserved := pobserved + (Freq[i][j] / Ncases) * weights[i,j]; pexpected := pexpected + (Expected[i,j] / Ncases) * weights[i,j]; end; end; Kappa := (pobserved - pexpected) / (1.0 - pexpected); lReport.Add('Linear Weighted Kappa: %.4f', [Kappa]); pobserved := 0.0; pexpected := 0.0; for i := 0 to Nrows - 1 do begin for j := 0 to Ncols - 1 do begin pobserved := pobserved + (Freq[i,j] / Ncases) * quadweights[i,j]; pexpected := pexpected + (Expected[i,j] / Ncases) * quadweights[i,j]; end; end; Kappa := (pobserved - pexpected) / (1.0 - pexpected); lReport.Add('Quadratic Weighted Kappa: %.4f', [Kappa]); quadweights := nil; weights := nil; end; DisplayReport(lReport); finally lReport.Free; end; // save frequency data file if elected if ((SaveChk.Checked) and (InputGroup.ItemIndex = 0)) then begin ClearGrid; for i := 1 to 3 do DictionaryFrm.NewVar(i); DictionaryFrm.DictGrid.Cells[1,1] := 'ROW'; DictionaryFrm.DictGrid.Cells[1,2] := 'COL'; DictionaryFrm.DictGrid.Cells[1,3] := 'FREQ.'; OS3MainFrm.DataGrid.Cells[1,0] := 'ROW'; OS3MainFrm.DataGrid.Cells[2,0] := 'COL'; OS3MainFrm.DataGrid.Cells[3,0] := 'Freq.'; k := 1; for i := 1 to Nrows do begin for j := 1 to Ncols do begin OS3MainFrm.DataGrid.RowCount := k + 1; OS3MainFrm.DataGrid.Cells[1,k] := IntToStr(i); OS3MainFrm.DataGrid.Cells[2,k] := IntToStr(j); OS3MainFrm.DataGrid.Cells[3,k] := IntToStr(Freq[i-1,j-1]); k := k + 1; end; end; for i := 1 to k - 1 do begin title := 'CASE ' + IntToStr(i); OS3MainFrm.DataGrid.Cells[0,i] := title; end; title := InputBox('FILE:','File Name:','Frequencies.LAZ'); OS3MainFrm.FileNameEdit.Text := title; OS3MainFrm.NoVarsEdit.Text := IntToStr(3); OS3MainFrm.NoCasesEdit.Text := IntToStr(k-1); NoVariables := 3; NoCases := k-1; SaveOS2File; end; //clean up ColLabels := nil; RowLabels := nil; CellChi := nil; Expected := nil; Prop := nil; Freq := nil; ColNoSelected := nil; end; procedure TWeightedKappaFrm.DepInClick(Sender: TObject); var index: integer; begin index := VarList.ItemIndex; if (index > -1) and (DepEdit.Text = '') then begin DepEdit.Text := VarList.Items[index]; VarList.Items.Delete(index); end; UpdateBtnStates; end; procedure TWeightedKappaFrm.DepOutClick(Sender: TObject); begin if DepEdit.Text <> '' then begin VarList.Items.Add(DepEdit.Text); DepEdit.Text := ''; end; UpdateBtnStates; end; procedure TWeightedKappaFrm.UpdateBtnStates; begin RowIn.Enabled := (VarList.ItemIndex > -1) and (RaterAEdit.Text = ''); RowOut.Enabled := (RaterAEdit.Text <> ''); ColIn.Enabled := (VarList.ItemIndex > -1) and (RaterBEdit.Text = ''); ColOut.Enabled := (RaterBEdit.Text <> ''); DepIn.Enabled := (InputGroup.ItemIndex > 0) and (VarList.ItemIndex > -1) and (DepEdit.Text = ''); DepOut.Enabled := (InputGroup.ItemIndex > 0) and (DepEdit.Text <> ''); DepEdit.Enabled := (InputGroup.ItemIndex > 0); DepLbl.Enabled := DepEdit.Enabled; NCasesEdit.Enabled := (InputGroup.ItemIndex = 2); NCasesLbl.Enabled := NCasesEdit.Enabled; end; procedure TWeightedKappaFrm.VarListSelectionChange(Sender: TObject; User: boolean); begin UpdateBtnStates; end; initialization {$I kappaunit.lrs} end.