Table 1. Correlation between the clinicopathological features and Klf4 expression in 94 NPC patients.
| Characteristics | Case No.(n) | Klf4 expression | χ2 | P | |
|---|---|---|---|---|---|
| High(n,%) | Low(n,%) | ||||
| Sex | |||||
| Female | 35 | 20(57.1) | 15(42.9) | 0. 285 | 0.665 |
| Male | 59 | 37(62.7) | 22(37.3) | ||
| Age (years) | |||||
| <50 | 44 | 23(52.3) | 21(47.7) | 2. 425 | 0.142 |
| ≥50 | 50 | 34(68.0) | 16(32.0) | ||
| Histological type | |||||
| DNKC | 6 | 2(33.3) | 4(66.7) | 2. 002 | 0.207 |
| UDC | 88 | 55(62.5) | 33(37.5) | ||
| T classification | |||||
| T1-T2 | 63 | 43(68.3) | 20(31.7) | 4. 642 | 0.043 |
| T3-T4 | 31 | 14(45.2) | 17(54.8) | ||
| N classification | |||||
| N0-N1 | 64 | 45(70.3) | 19(29.7) | 7. 863 | 0.007 |
| N2-N3 | 30 | 12(40.0) | 18(60.0) | ||
| M classification | |||||
| M0 | 77 | 51(66.2) | 26(33.8) | 5. 585 | 0.027 |
| M1 | 17 | 6(35.3) | 11(64.7) | ||
| Clinical stage | |||||
| I-II | 28 | 22(78.6) | 6(21.4) | 5. 373 | 0.023 |
| III-IV | 66 | 35(53.0) | 31(47.0) | ||
DNKC: differentiated nonkeratinizing carcinoma; UDC: undifferentiated carcinoma; T: tumor size; N: lymph node metastasis; M: distant metastasis.