Nomogram of Zheng et al for Radiation-Induced Sinusitis Associated with Nasopharyngeal Carcinoma

Description

Zheng et al reported a nomogram for predicting radiation-induced sinusitis in a patient being treated for nasopharyngeal carcinoma. The authors are from the General Hospital of Southern Theatre Command of PLA, Southern Medical University in Guangzhou.

Patient selection: nasopharyngeal carcinoma treated with radiation.

Parameters:

(1) time since radiation therapy

(2) TNM stage of the tumor

(3) current smoker

Parameter	Finding	Points
time since radiation	1 month	0
	3 months	12.5
	6 months	56.5
	9 months	43.63
	12 months	94.5
	18 months	100
	24 months	84
TNM stage	I	10.5
	II	43.25
	III	51.88
	IV	0
smoker	no	0
	yes	77.5

total score =

= SUM(points for all of the parameters)

Interpretation:

• minimum score: 0

• maximum score: 229.4

value of X =

= (-0.00002533 * ((score)^2)) + (0.01671 * (score)) + 0.7139

risk of radiation-induced sinusitis =

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

Performance:

• The area under the ROC curve is 0.69.

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Nomogram of Zheng et al for Radiation-Induced Sinusitis Associated with Nasopharyngeal Carcinoma

Description

Specialty