Table 1. Patient baseline characteristics by RDW Level.
| Characteristics | Total, n=191 (%) | RDW≤46.2 fL,n=107 (%) | RDW>46.2 fL,n=84 (%) | P |
|---|---|---|---|---|
| Age(median [range], yr) | 44 (15,86) | 0.078 | ||
| ≤60 | 159(83.2) | 94(87.9) | 65(77.4) | |
| >60 | 32(16.8) | 13(12.1) | 19(22.6) | |
| Gender (male) | 134(70.2) | 75(70.1) | 59(70.2) | 1.00 |
| ECOG PS | <0.001 | |||
| 0∼1 | 157(82.2) | 99(92.5) | 58(69.0) | |
| ≥2 | 34(17.8) | 8(7.5) | 26(31.0) | |
| B symptoms (yes) | 88(46.1) | 50(46.7) | 38(45.2) | 0.884 |
| LDH > 240 U/L | 49(25.7) | 29(27.1) | 20(23.8) | 0.621 |
| Extranodal sites > 2 | 80(41.9) | 44(41.4) | 36(42.9) | 0.883 |
| Ki67 > 50% | Available (161) | Available (91) | Available (70) | 0.266 |
| 91(56.6) | 55(60.4) | 36(51.4) | ||
| HB (≤126 g/L) | 84(43.9%) | 45(42.1) | 39(46.4) | 0.560 |
| Ann Arbor stage | 1.00 | |||
| I/II | 184(96.3) | 103(96.3) | 81(96.3) | |
| III/IV | 7(3.7) | 4(3.7) | 3(3.6) | |
| Local invasiveness | 89(46.6) | 50(46.7) | 39(46.4) | 1.00 |
| Regional lymphadenopathies | 80(41.9) | 52(48.6) | 28(33.3) | 0.039 |
| Comorbidities | ||||
| Smoking | 51(26.7) | 32(29.9) | 19(22.6) | 0.323 |
| Drinking | 28(14.7) | 20(18.7) | 8(9.50) | 0.099 |
| Hepatitis B | 12(6.30) | 7(6.50) | 5(6.00) | 1.00 |
| Underlying diseases | 28(14.7) | 16(15.0) | 12(14.3) | 1.00 |
| IPI score | 0.009 | |||
| 0-1 | 139(72.8) | 86(80.4) | 53(63.1) | |
| 2-5 | 52(27.2) | 21(19.6) | 31(36.9) | |
| PINK score | 0.068 | |||
| 0 | 153(80.1) | 91(85.0) | 62(73.8) | |
| 1-3 | 38(19.9) | 16(15.0) | 22(26.2) | |
| KPI score | 0.219 | |||
| 0-1 | 127(66.5) | 67(62.6) | 60(71.4) | |
| 2-4 | 64(33.5) | 40(37.4) | 24(28.6) |
NOTE. Regional lymphadenopathies defined as involvement of lymph nodes corresponding to N1-N3 of the primary lesion at the TNM staging system; local invasiveness defined as T3 or T4; Underlying diseases consisted of hypertension, hyperglycemia, hyperlipidemia and chronic bronchitis; Hepatitis B defined as serum HBsAg is positive. Characteristics with P values<0.05 are marked in bold. Abbreviations: ECOG PS, Eastern Cooperative Oncology Group performance status; HB, Hemoglobin; LDH, lactate dehydrogenase; EBER, EBV-encoded RNA; IPI, international prognostic index; KPI, Korean Prognostic Index; PINK, prognostic index of natural killer lymphoma.