Buganza-Torio et al developed models for screening for depression in a patient with cirrhosis. One model involves logistic regression. The authors are from the University of Alberta in Edmonton.
Patient selection: cirrhosis
Parameters:
(1) concern about appearance (from Hospital Anxiety and Depression Scale)
(2) looking forward with enjoyment (from Hospital Anxiety and Depression Scale)
(3) cheerful (from Hospital Anxiety and Depression Scale)
(4) married or in common law arrangement
(5) age in years, from 20 to 80
Parameter
Finding
Points
concern about appearance
as much care as ever
0
may not take as much care as should
1
do not take as much care as should
2
definitely
3
looking forward
as much as ever
0
rather less than used to
1
defintiely less than used to
2
hardly at all
3
cheerful
most of the time
0
sometimes
1
not often
2
not at all
3
married or common law
yes
0
no
1
X =
= (0.58987797 * (points for appearance)) + (0.64696523 * (points for looking forward)) + (0.84295818 * (points for cheerful)) - (0.059501702 * (age)) - (1.0650641 * (points for marriage)) + 0.46558423
probability of depression =
= 1 / (1 + EXP((-1) * X))
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