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