[Retracted] Establishment of a Risk Prediction Model for Pulmonary Infection in Patients with Advanced Cancer

Table 1

The training dataset predicted a bivariate relationship between variables and concurrent pulmonary infection.

Study variable	Control group	Infection group	value
	945	664
Gender			<0.01
Male	501 (53.0%)	431 (64.9%)
Female	444 (47.0%)	233 (35.1%)
Age, median (IQR)	57.0 (48.0, 67.0)	63.0 (54.0, 73.0)	<0.01
Lung metastases			<0.01
No	791 (83.7%)	518 (78.0%)
Yes	154 (16.3%)	146 (22.0%)
Pathology			<0.01
Other cancers	706 (74.7%)	278 (41.9%)
Adenocarcinoma	203 (21.5%)	286 (43.1%)
Squamous cell carcinomas	14 (1.5%)	48 (7.2%)
Small cell lung cancer	21 (2.2%)	43 (6.5%)
Sarcomatoid carcinoma	1 (0.1%)	6 (0.9%)
Neuroendocrine carcinoma	0 (0.0%)	2 (0.3%)
Choriocarcinoma	0 (0.0%)	1 (0.2%)
Race			<0.01
The Han nationality	641 (67.8%)	506 (76.2%)
Uighurs	192 (20.3%)	94 (14.2%)
Kazak	52 (5.5%)	20 (3.0%)
The hui nationality	36 (3.8%)	31 (4.7%)
Other ethnic groups	24 (2.5%)	13 (2.0%)
Whether the primary cancer is lung cancer			<0.01
No	706 (74.7%)	282 (42.5%)
Yes	239 (25.3%)	382 (57.5%)
History of surgery			0.36
No	539 (57.0%)	363 (54.7%)
Yes	406 (43.0%)	301 (45.3%)
History of chemotherapy			<0.01
No	103 (10.9%)	162 (24.4%)
Yes	842 (89.1%)	502 (75.6%)
History of radiation therapy			0.14
No	850 (89.9%)	612 (92.2%)
Yes	95 (10.1%)	52 (7.8%)
Diabetes			0.38
No	919 (97.2%)	640 (96.4%)
Yes	26 (2.8%)	24 (3.6%)
Hypertension			0.41
No	887 (93.9%)	616 (92.8%)
Yes	58 (6.1%)	48 (7.2%)
Bone marrow suppression			0.18
No	936 (99.0%)	652 (98.2%)
Yes	9 (1.0%)	12 (1.8%)
Central vein catheterization			<0.01
No	899 (95.1%)	599 (90.2%)
Yes	46 (4.9%)	65 (9.8%)
Number of metastases, median (IQR)	2.0 (1.0, 3.0)	1.0 (1.0, 2.0)	0.02