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Question1: Regression - What factors predict duration of dyspnea in elders with heart failure?
Note: gender is coded 0 = male, 1 = female [Clue: To answer this question, examine the coefficients table]
Descriptive statistics
mean
Std. Deviation
N
dysLN
4.0562
1.84562
66
HFSPSTOT
20.32
8.64
Age
76.12
7.796
gender_dummy
0.5
0.504
Correlations
gender dummy
pearson
1
0.304
0.034
0.22
-0.112
-0.037
-0.341
Sig(1- tailed)
-
0.007
0.394
0.038
0.185
0.384
'-
0.003
Variables Entered/ Removed
Model
variables entered
variables removed
method
Gender_dumy, HFSPSTOT, Age
Enter
Model summary
R
R square
Adjusted R square
Std error of the estimate
0.414a
0.171
0.131
1.72052
1. Predictors: ( constant), gender_dummy, HFSPSTOT, age
ANOVA b
Sum of squares
df
mean square
F
Sig
regression
37.878
3
12.626
4.265
0.008 a
residual
183.531
62
2.96
total
221.409
65
2. Dependent variable : dysLN
Coefficients
unstandardized coefficients
standardized coefficients
t
sig
B
Std.Error
Beta
( constant)
0.987
2.454
-0.402
0.689
0.071
0.025
0.334
2.86
0.006
0.04
0.029
0.17
1.37
0.176
1.063
0.452
0.29
2.352
0.022
1. Dependent variable : dysLN
Statistics
Dyspdur
valid
77
68
missing
0
9
19.57
194.6793
median
19
72
mode
24
336
std. Deviation
8.469
359.6012
Question2: What percent variance in dyspnea duration is explained by this model? (Hint: To answer this question, examine the model summary table) dyspnea in elders with heart failure?
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