logistic regression(explained)
TRANSCRIPT
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7/31/2019 Logistic Regression(Explained)
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0 42 .0
0 42 100.0
50.0
Observed
.00
1.00
IMPROVE
Overall Percentage
Step 0
.00 1.00
IMPROVE Percentage
Correct
Predicted
Constant is included in the model.a.
The cut value is .500b.
.000 .218 .000 1 1.000 1.000ConstantStep 0
B S.E. Wald df Sig. Exp(B)
4.613 1 .032
10.720 1 .001
16.797 2 .000
SEX(1)
TREAT(1)
Variables
Overall Statistics
Step
0
Score df Sig.
10.962 1 .001
10.962 1 .001
10.962 1 .0017.266 1 .007
18.227 2 .000
18.227 2 .000
Step
Block
ModelStep
Block
Model
Step 1
Step 2
Chi-square df Sig.
Number of people whose health was
improved irrespective of having the
treatment or just taking the placebo.
This is a score test that is used to predict whether or not anindependent variable would be significant in the model. Pearson chi-
square values of sex and treatment are given to show that they are both
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Step number: 1
Observed Groups and Predicted Probabilities
80 F R 60 E Q U 1 E 40 1 1 N 1 1 C 0 1
Y
0 1
20 0 1 0 0 0 0 0 0 Predicted
Prob: 0 .25 .5 .75 1Group: 000000000000000000000000000000111111111111111111111111111111
Predicted Probability is of Membership for 1.00The Cut Value is .50Symbols: 0 - .00
1 - 1.00
Each Symbol Represents 5 Cases.
Step number: 2
Observed Groups and Predicted Probabilities
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1 1 1 F 1 1 R 24 1 1 E 1 1 Q 0 1
U
0 1
E 16 0 1 N 0 1 1 C 1 0 1 1
Y 0 0 1 1 8 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0 Predicted
Prob: 0 .25 .5 .75 1Group: 000000000000000000000000000000111111111111111111111111111111
Predicted Probability is of Membership for 1.00The Cut Value is .50Symbols: 0 - .00
1 - 1.00Each Symbol Represents 2 Cases.