Nomogram of Tang et al for Predicting Survival of a Patient with a Neuroendocrine Tumor of the Thymus

Description

Tang et al reported a nomogram for predicting survival of a patient with a neuroendocrine tumor of the thymus. The authors are from Qingdao University in China.

Patient selection: neuroendocrine tumor of the thymus

Parameters:

(1) chemotherapy

(2) surgery

(3) T status

(4) grade

Parameter	Finding	Points
chemotherapy	no	0
	yes	5
surgery	yes	0
	no	6.5
T status	Tx	0.6
	T1	0
	T2	4.8
	T3	5.1
	T4	10
grade/differentiation	well	0
	intermediate/moderate	3
	poor	2
	unknown	9

where:

• Not sure how a tumor with unknown grade has a much greater risk than a poorly differentiated tumor.

total score =

= SUM(points for all of the parameters)

Interpretation:

• minimum score: 0

• maximum score: 30.5

value of X =

= (-0.0020465 * ((score)^2)) - (0.074498 * (score)) + 1.451

probability of 5-year survival =

= 1 / (1 + EXP((-1) * X))

Performance:

• The area under the ROC curves i 0.71.

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Nomogram of Tang et al for Predicting Survival of a Patient with a Neuroendocrine Tumor of the Thymus

Description

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