Patient selection: Parkinson's disease
Outcome: fall in the next 6 months
Paarmeters:
(1) history of a fall in the past 12 months
(2) FOG (freezing of gait) in the past month
(3) self-selected gait speed in meters per second
|
Parameter
|
Finding
|
Points
|
|
history of fall in the past 12 months
|
no
|
0
|
|
|
yes
|
6
|
|
freezing of gait
|
no
|
0
|
|
|
yes
|
3
|
|
self-selected gait speed
|
< 1.1 meters/second
|
2
|
|
|
>= 1.1 meters/second
|
0
|
total score =
= SUM(points for all 3 parameters)
Interpretation:
• minimum score: 0
• maximum score: 11
• Gaps in score: 1, 4, 7, 10
• The higher the score the greater the risk of a fall.
|
Score
|
Risk of Fall in 6 Months
|
|
0
|
low risk (17%)
|
|
2 to 6
|
medium (51%)
|
|
8 to 11
|
high (85%)
|
Performance:
• The area under the ROC curve 0.83.
Additional findings associated with falls:
(1) number of falls in the past 12 months
(2) weak knee extensor strength
(3) slow time to perform 5 sit-to-stand actions
(4) reduced standing balance with narrow base of support
(5) coordinated stability
(6) sway on foam
