| RDW | N | OR (95% Cls) | P value |
| Age, years | | | | 19.3 - 61.0 | 1143 | 1.24 (1.17, 1.30) | <0.0001 | 61.0 - 74.3 | 1143 | 1.15 (1.09, 1.22) | <0.0001 | 74.3 - 91.4 | 1144 | 1.08 (1.02, 1.14) | 0.0066 | Sex, n (%) | | | | Male | 1530 | 1.16 (1.11, 1.21) | <0.0001 | Female | 1900 | 1.15 (1.10, 1.20) | <0.0001 | Ethnicity, n (%) | | | | White | 261 | 1.20 (1.08, 1.34) | 0.0007 | Black | 2520 | 1.16 (1.11, 1.20) | <0.0001 | Other | 649 | 1.15 (1.08, 1.24) | 0.0001 | SBP, mmHg | | | | 71.5 - 108.3 | 1139 | 1.16 (1.11, 1.22) | <0.0001 | 108.3 - 122.9 | 1140 | 1.16 (1.09, 1.23) | <0.0001 | 122.9 - 176.6 | 1140 | 1.10 (1.04, 1.17) | 0.0013 | DBP, mmHg | | | | 27.9 - 55.8 | 1139 | 1.18 (1.12, 1.25) | <0.0001 | 55.8 - 64.4 | 1138 | 1.12 (1.06, 1.18) | <0.0001 | 64.4 - 103.8 | 1141 | 1.15 (1.09, 1.22) | <0.0001 | Hematocrit, % | | | | 18.1 - 31.1 | 1120 | 1.09 (1.04, 1.14) | 0.0007 | 31.2 - 35.9 | 1130 | 1.20 (1.13, 1.27) | <0.0001 | 36 - 66.7 | 1179 | 1.24 (1.16, 1.33) | <0.0001 | Hemoglobin, g/dl | | | | 6.1 - 10.3 | 1126 | 1.08 (1.03, 1.14) | 0.0012 | 10.4 - 12 | 1141 | 1.19 (1.13, 1.27) | <0.0001 | 12.1 - 21.5 | 1162 | 1.22 (1.13, 1.31) | <0.0001 | Respiratory rate, beats/minute | | | | 9.9 - 17.2 | 1139 | 1.22 (1.14, 1.30) | <0.0001 | 17.2 - 20.8 | 1138 | 1.12 (1.06, 1.19) | 0.0001 | 20.8 - 42.2 | 1139 | 1.12 (1.07, 1.18) | <0.0001 | Serum bicarbonate, mmol/L | | | | 6 - 22 | 945 | 1.13 (1.07, 1.19) | <0.0001 | 23 - 25 | 1078 | 1.23 (1.15, 1.31) | <0.0001 | 26 - 46 | 1403 | 1.11 (1.05, 1.16) | 0.0001 | Congestive heart failure | | | | 0 | 3018 | 1.16 (1.13, 1.20) | <0.0001 | 1 | 412 | 1.11 (1.01, 1.22) | 0.0362 | Atrial fibrillation | | | | 0 | 2478 | 1.17 (1.13, 1.22) | <0.0001 | 1 | 952 | 1.11 (1.05, 1.18) | 0.0004 | COPD | | | | 0 | 3337 | 1.16 (1.13, 1.20) | <0.0001 | 1 | 93 | 0.99 (0.78, 1.24) | 0.9016 | Respiratory failure | | | | 0 | 1995 | 1.16 (1.10, 1.22) | <0.0001 | 1 | 1435 | 1.17 (1.12, 1.22) | <0.0001 | ARDS | | | | 0 | 3351 | 1.15 (1.12, 1.19) | <0.0001 | 1 | 79 | 1.30 (1.07, 1.56) | 0.0069 | Pneumonia | | | | 0 | 2392 | 1.18 (1.13, 1.23) | <0.0001 | 1 | 1038 | 1.13 (1.07, 1.19) | <0.0001 | Valvular disease | | | | 0 | 2160 | 1.13 (1.08, 1.18) | <0.0001 | 1 | 1270 | 1.20 (1.14, 1.26) | <0.0001 | CAD | | | | 0 | 2907 | 1.16 (1.12, 1.20) | <0.0001 | 1 | 523 | 1.13 (1.03, 1.23) | 0.0102 | Stroke | | | | 0 | 3145 | 1.16 (1.12, 1.20) | <0.0001 | 1 | 285 | 1.15 (1.03, 1.29) | 0.0107 | Renal disease | | | | 0 | 3075 | 1.16 (1.12, 1.20) | <0.0001 | 1 | 355 | 1.13 (1.02, 1.24) | 0.0192 | Liver disease | | | | 0 | 3213 | 1.16 (1.12, 1.20) | <0.0001 | 1 | 217 | 1.13 (1.01, 1.26) | 0.0343 | Renal replace therapy | | | | 0 | 3259 | 1.16 (1.12, 1.20) | <0.0001 | 1 | 171 | 1.06 (0.96, 1.18) | 0.2569 |
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SBP: systolic blood pressure, DBP: diastolic blood pressure, COPD: chronic obstructive pulmonary disease, ARDS: acute respiratory distress syndrome, and CAD: coronary atherosclerotic heart disease. ORs (95% CIs) were derived from logistic regression analysis models.
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