Rojas-Hernandez et al reported a score for the diagnosis of cancer-associated venous thromboembolism (CAT) score. The authors are from the University of Texas M.D. Anderson Cancer Center in Houston.
Patient selection: cancer
Parameters:
(1) metastatic cancer
(2) use of erythropoietin stimulating agents (ESA)
(3) cancer type
(4) chemotherapy with a platinum agent
Parameter
Finding
Points
metastatic
no
0
yes
65.9
use of ESA
no
0
yes
70
cancer type
lymphoma
0
breast
19.2
GU/Kidney
42.2
Head/Neck
66.7
Gyn
77.9
GI or Pancreas
79.1
other
27.9
platinum therapy
no
0
yes
100
total score =
= SUM(points for all 4 parameters)
Interpretation:
• minimum score: 0
• maximum score: 315
X =
= (0.01392 * (score)) - 3.917
Score
Probability of Venous Thromboembolism
< 70
< 5%
>= 70
1/(1 + EXP((-1) * X))
Performance:
• The area under the ROC curve is 0.74.
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