Table 2. Clinical characteristics of patients of serum sodium quartiles.
| Variable | Q1(n = 114) | Q2(n = 103) | Q3(n = 102) | Q4(n = 96) |
|---|---|---|---|---|
| Age(years)* | 51.18±12.61 | 52.50±13.11 | 56.11±11.93 | 53.21±10.53 |
| Male(N,%) | 83,72.80 | 79,76.70 | 75,73.53 | 68,79.83 |
| Hypertension(N,%) | 80,70.18 | 74,71.84 | 78,76.47 | 72,75.00 |
| Diabetes(N,%) | 1,0.87 | 3,2.91 | 1,0.98 | 3,3.13 |
| CAD(N,%) | 4,3.51 | 7,6.80 | 5,4.90 | 2,2.08 |
| Smoking(N,%) | 60,52.63 | 47,45.63 | 61,59.80 | 49,51.04 |
| Drinking(N,%) | 62,53.39 | 57,55.33 | 59,57.84 | 55,57.29 |
| Stanford type A | 63,55.26 | 67,65.05 | 59,57.84 | 69,71.88 |
| non-survivor ** | 6,9.52 | 11,16.42 | 18,30.51 | 22,31.88 |
| survivor | 57,90.48 | 56,83.58 | 42,71.19 | 47,68.12 |
| History of trauma(N,%) | 4,3.51 | 4,3.88 | 9,8.82 | 4,4.17 |
| Surgical history(N,%) | 27,23.68 | 28,27.18 | 28,27.45 | 25,26.04 |
| Heart rate(b.p.m) | 82.18±15.46 | 80.03±21.02 | 79.90±14.94 | 79.07±18.23 |
| SBP(mmHg) | 139.02±26.92 | 140.65±27.24 | 138.75±31.60 | 137.33±28.26 |
| DBP(mmHg) | 80.25±17.48 | 81.94±19.77 | 80.68±21.22 | 78.49±18.63 |
| length of in-hospital(day) | 13.46±8.62 | 12.83±8.48 | 11.54±8.94 | 13.89±9.73 |
| ALT(U/L) | 24.25(15.45,32.53) | 19.80(14.00,29.20) | 22.60(15.90,31.96) | 24.75(16.65,36.00) |
| AST(U/L) | 33.80(19.93,52.80) | 28.00(18.30,46.70) | 29.25(19.45,49.53) | 32.65(20.61,67.55) |
| Creatinine(μmol/L) | 79.50(61.75,110.00) | 80.00(63.00,111.00) | 72.50(60.75,103.50) | 84.50(65.00,122.25) |
| Urea nitrogen(mmol/L) | 6.00(4.30,7.35) | 6.80(5.00,8.90) | 5.95(4.80,7.70) | 6.60(5.40,8.70) |
| Serum glucose(mmol/L) | 7.17(6.13,9.09) | 7.11(5.97,9.32 | 7.70(5.97,8.11) | 7.40(6.32,9.15) |
| α-HBDH(U/L) | 214.90(167.50,302.95) | 208.80(160.90,311.90) | 197.90(161.95,271.60) | 233.85(182.90,328.85) |
| WBC count(10*9/L) | 11.81±4.19 | 11.51±3.61 | 11.47±3.29 | 12.64±4.86 |
| Neutrophil count(10*9/L)* | 9.93±4.04 | 9.78±3.57 | 9.71±3.28 | 11.35±4.75 |
| Lymphocyte count(10*9/L) | 0.94(0.65,1.28) | 0.96(0.67,1.40) | 0.62(0.44,0.86) | 0.94(0.65,1.23) |
| Monocyte count(10*9/L)* | 0.70(0.55,0.97) | 0.62(0.44,0.86) | 0.64(0.51,0.93) | 0.75(0.54,1.03) |
| Serum potassium(mmol/L) | 3.90(3.40,4.00) | 4.00(3.40,4.00) | 4.00(3.40,4.10) | 4.00(3.40,4.18) |
| Serum chloride(mmol/L)* | 101.00(97.99,104.00) | 105.00(102.00,106.00) | 105.85(103.00,109.00) | 107.35(104.00,110.00) |
| Serum calcium(mmol/L) | 2.16(2.09,2.24) | 2.17(2.10,2.29) | 2.20(2.10,2.28) | 2.18(2.11,2.29) |
*: P < 0.05
**: Stanford type A as subgroup, compared in-hospital mortality in Q1-Q4 groups, P < 0.05. CAD: coronary artery disease; SBP: systolic blood pressure; DBP, diastolic blood pressure; ALT: Alanine transaminase; AST: Aspartate transaminase; α-HBDH: alpha-hydroxybutyric dehydrogenase; WBC: white blood cell.
For numerical raw data, please see S1 Data.