Table 1.
Distribution of NENs among patients in Beijing by primary tumor site and histology type, 1998–2018
| All NENs | SCLC&LCNEC | Pulmonary carcinoid tumor | Extrapulmonary NEC | Extrapulmonary NET | P value | |
|---|---|---|---|---|---|---|
| Distribution, n(%) | 12,896 (100.00) | 9602 (74.46) | 738 (5.72) | 1735 (13.45) | 821 (6.37) | |
| Age at NEC diagnosis, | ||||||
| mean ± SD | 63.42 ± 11.77 | 64.45 ± 10.76 | 62.14 ± 12.07 | 61.76 ± 14.18 | 56.06 ± 13.88 | χ2 = 318.24, P < 0.01 |
| mediana | 65 | 65 | 63 | 63 | 56 | |
| Male sexa, n(%) | 9209 (71.41) | 7262 (75.63) | 504(68.29) | 1005(57.93) | 438(53.35) | χ2 = 372.97, P < 0.01 |
| Urbana, n(%) | 8546(66.27) | 6161(64.16) | 520(70.46) | 1228(70.78) | 637(77.89) | χ2 = 87.68, P < 0.01 |
| Tertiarya, n(%) | 12,241 (94.92) | 9080 (94.56) | 710 (96.21) | 1659 (95.62) | 792 (96.47) | χ2 = 10.90, P = 0.01 |
| Ethnic Hana, n(%) | 12,334 (95.64) | 9248 (96.31) | 692 (93.77) | 1621 (93.43) | 773 (94.15) | χ2 = 41.35, P < 0.01 |
NEN Neuroendocrine neoplasm, NEC Neuroendocrine carcinoma, NET Neuroendocrine tumor, SD Standard deviation, SCLC Small cell lung cancer, LCNEC Large cell neuroendocrine carcinoma
aStatistically significant