Table 3 Mean (SD) of age at diagnosis, for all Surveillance, Epidemiology and End Results (SEER) and in-institute participants by ethnicity.

From: Time-to-Progression of NSCLC from Early to Advanced Stages: An Analysis of data from SEER Registry and a Single Institute

Characteristics

Caucasian n = 37532

African-American n = 4745

Asian n = 3627

Sex-mean(SD)

 Male

69.75(10.04)

66.64(9.99)

67.13(11.08)

 Female

69.43(10.46)

65.75(10.58)

65.33(11.42)

Grade-mean(SD)

 Well-differentiated

69.56(10.72)

66.55(11.03)

65.78(11.83)

 Moderately-differentiated

69.83(9.99)

66.37(10.20)

65.57(11.10)

 Poorly-differentiated

69.41(10.30)

66.04(10.19)

67.64(11.21)

 Undifferentiated

68.49(10.94)

64.63(9.26)

68.91(8.13)

Histology-mean(SD)

 Squamous cell carcinoma

70.87(9.52)

68.81(9.58)

68.92(10.31)

 Adenocarcinoma

68.87(10.58)

64.8(10.39)

65.51(11.43)

Site

 Upper lobe

69.40(10.16)

66.02(10.26)

66.21(11.17)

 Middle lobe

68.95(10.60)

66.26(10.45)

66.31(11.58)

 Lower lobe

70.29(10.22)

66.88(10.37)

66.34(11.33)

 Main bronchus

66.11(11.31)

63.99(9.53)

65.55(13.4)

T stage-mean(SD)

 T1a

69.05(9.6)

66.37(9.25)

63.76(10.99)

 T1b

70.32(10.13)

66.41(10.14)

67.25(11.03)

 T2a

69.95(10.42)

66.42(10.71)

66.19(10.72)

 T2b

69.99(10.59)

67.15(10.63)

68.78(11.78)

 T3

69.47(10.39)

65.97(10.44)

67.34(11.60)

 T4

68.95(10.61

65.4(10.41)

66.97(12.01)

N stage-mean(SD)

 N0

70.21(10.05)

66.82(10.12)

66.57(11.18)

 N1

68.41(10.33)

65.54(10.32)

65.37(10.66)

 N2

68.97(10.59)

65.78(10.50)

65.55(11.55)

 N3

67.63(10.78)

64.64(10.37)

67.16(11.55)

  1. SD: Standard deviation.