Clinical Study of Airway Stent Implantation in the Treatment of Patients with Malignant Central Airway Obstruction

Table 3

Survival factors and assignments of MCAO patients after airway stent placement.

Survival factors	Assignment
Gender	Female = 0, male = 1
Age	≤60 years old = 0, >60 years old = 1
Hypertension	No = 0, yes = 1
Diabetes	No = 0, yes = 1
Primary disease	Other∗ = 0, Lung cancer = 1, esophageal cancer = 2
ECOG PS score	0–2 points = 0, 3–4 points = 1
Treatment after stent placement	Radiotherapy = 0, chemotherapy = 1, Radiotherapy and chemotherapy = 2, Supportive Treatment = 3, No Treatment = 4
Stent	Trachea = 0, left main bronchus = 1, right main bronchus = 2, other^† = 3
Hb (g/L)	≥110 = 0, <110 = 1
ALB (g/L)	≥40 = 0, <40 = 1
LDH (µg/L)	<250 = 0, ≥250 = 1

∗Other diseases included airway stenosis, esophagotracheal fistula, lung infection, thyroid cancer, laryngeal cancer, tracheal space occupying, bronchial adenoid cystic carcinoma, and mantle cell lymphoma. ^†Other diseases included right middle bronchus, left main bronchus + right main bronchus, and right middle bronchus + right distal bronchus. Hb: hemoglobin; ALB: albumin; LDH: serum lactate dehydrogenase.