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Table 5 Spearman rank correlation coefficient parameters

From: Is elevated Red cell distribution width a prognostic predictor in adult patients with community acquired Pneumonia?

   Total RDW < 13.2 RDW 13.2-15 RDW > 15 Spearman coefficient
   N N (%) N (%) N (%)   P
Hemoglobin ≥10 3189 456 (17) 1772 (55.6) 961 (30.1) 0.29 <0.001
<10 615 14.3 (2.8) 176 (28.6) 422 (68.6)
WBC <4 133 13 (9.8) 32 (24.1) 88 (66.2) −0.05 0.001
≥12 1781 239 (13.4) 920 (51.7) 622 (34.9)
4 ≤ ≤12 1890 221 (11.7) 996 (52.7) 673 (35.6)
Creatinine <1.5 3010 443 (14.7) 1563 (51.9) 1004 (33.4) 0.16 <0.001
1.5-2 378 18 (4.8) 192 (50.8) 168 (44.4)
>2 409 10 (2.4) 191 (46.7) 208 (50.9)
Na <130 393 57 (14.5) 183 (46.6) 153 (38.9) 0.01 0.5
130 < <150 3301 412 (12.5) 1710 (51.8) 1179 (35.7)
≥150 88 4 (4.5) 43 (48.9) 41 (46.6)
BUN ≤30 2762 420 (15.2) 1452 (52.6) 890 (32.2) 0.17 <0.001
>30 1019 52 (5.1) 483 (47.4) 484 (47.5)
HCT ≥30 3238 456 (14.1) 1760 (54.4) 1022 (31.6) 0.24 <0.001
<30 548 17 (3.1) 180 (32.8) 351 (64.1)
O2 SAT% 92-100 2041 270 (13.2) 1036 (50.8) 735 (36.0)   
91 606 54 (8.9) 297 (49.0) 255 (42.1)
Age <50 592 174 (29.4) 297 (50.2) 121 (20.4) 0.18 <0.001
50–59 395 70 (17.7) 204 (51.6) 121 (30.6)
60–69 572 67 (11.7) 284 (49.7) 221 (38.6)
70–79 972 81 (8.3) 485 (49.9) 406 (41.8)
80–89 1004 63 (6.3) 533 (53.1) 408 (40.6)
≥90 280 19 (6.8) 149 (53.2) 112 (40.0)
  1. WBC White Blood Cells; Hct Hematocrit; Hb Hemoglobin; Na Sodium; SAT Saturation; BUN Blood Urea Nitrogen; SAT Oxygen Saturation.