Table 3 Demographics of the population.

From: Identification of diagnostic and prognostic biomarkers in lung adenocarcinoma through integrated bioinformatics analysis and real time PCR validation

Clinicopathological variables

No. of patients (%) /mean ± SD

Patients

522

Mean age (Years, mean ± SD)

62.95 ± 15.71

Age at initial pathologic diagnosis

62.95 ± 15.71

Sex

 Male

242 (46.4)

 Female

280 (53.6)

Race

 NA

67 (12.8)

 Asian

8 (1.5)

 White

393 (75.3)

 Black or African-American

53 (10.2)

 American-Indian or Alaska native

1 (0.2)

Ethnicity

 NA

126 (24.1)

 Not Hispanic or Latino

389 (74.5)

 Hispanic or Latino

7 (1.3)

Neoplasm cancer status

 Missing

93 (17.8)

 Tumor-free

315 (60.3)

 With tumor

114 (21.8)

Stage

 0

8 (1.5)

 1

279 (53.6)

 2

123 (23.6)

 3

85 (16.3)

 4

26 (5.0)

Depth of tumor invasion (T)

 T1

172 (33.0)

 T2

281 (53.8)

 T3

47 (9.0)

 T4

19 (3.6)

 Tx (NA)

3 (0.6)

Lymph node involvement (N)

 N0

335 (64.2)

 N1

98 (18.8)

 N2

75 (14.4)

 N3a, N3b, N3c

2 (0.4)

 Nx (NA)

12 (2.3)

Metastasis (M)

 M0

353 (67.6)

 M1

25 (4.8)

 Mx (NA)

144 (27.6)

Pack-years smoked

28.48 ± 29.66

Follow-up vital status

 Dead

128 (24.5)

 Alive

394 (75.5)

Case-control

 Case

16 (3.1)

 Control

506 (96.9)

Days to last follow-up

337.73 ± 737.856