Circulating Heat Shock Protein 70 Is a Novel Biomarker for Early Diagnosis of Lung Cancer

Table 1

The characteristics of the lung cancer patients and healthy controls.

Characteristic	Lung cancer patients (197)	Healthy controls (100)
Sex
Male	121	28
Female	76	72
Age (years)
<45	23	56
45–65	124	35
>65	50	9
Histology
Adenocarcinoma	126
Squamous cell	43
Others	28
Stage
Early	118
Advanced	60
Unknown	19
Metastasis
Yes	48
No	148
Unknown	1
Differentiation
Low	55
Moderate	50
High	12
Unknown	80
Smoking
Yes	92
No	92
Unknown	13
Tumor size
≥3 cm	97
<3 cm	70
Unknown	30