Variables | Total (n = 943) | Anion gap ≤ 12 (n = 154) | 12 < Anion gap ≤ 15 (n = 317) | 15 < Anion gap ≤ 17 (n = 213) | Anion gap > 17 (n = 259) | p | statistic |
---|---|---|---|---|---|---|---|
Admission age, Mean ± SD | 68.1 ± 14.3 | 69.2 ± 12.6 | 67.9 ± 13.9 | 67.1 ± 15.0 | 68.5 ± 15.0 | 0.52 | 0.75 |
Race, n (%) | Â | Â | Â | Â | Â | 0.56 | 7.79 |
 1 | 585 (62.0) | 101 (65.6) | 198 (62.5) | 136 (63.8) | 150 (57.9) |  |  |
 2 | 58 ( 6.2) | 8 (5.2) | 15 (4.7) | 13 (6.1) | 22 (8.5) |  |  |
 3 | 53 ( 5.6) | 9 (5.8) | 22 (6.9) | 10 (4.7) | 12 (4.6) |  |  |
 4 | 247 (26.2) | 36 (23.4) | 82 (25.9) | 54 (25.4) | 75 (29) |  |  |
gender, n (%) | Â | Â | Â | Â | Â | 0.23 | 4.27 |
 Female | 329 (34.9) | 45 (29.2) | 118 (37.2) | 69 (32.4) | 97 (37.5) |  |  |
 Male | 614 (65.1) | 109 (70.8) | 199 (62.8) | 144 (67.6) | 162 (62.5) |  |  |
heart rate mean, Mean ± SD | 80.2 ± 15.5 | 78.7 ± 13.5 | 76.5 ± 12.7 | 81.3 ± 16.0 | 84.7 ± 17.9 | < 0.01 | 14.82 |
sbp mean, Mean ± SD | 113.6 ± 15.1 | 112.7 ± 12.1 | 115.4 ± 14.0 | 115.3 ± 15.6 | 110.6 ± 17.0 | < 0.01 | 5.93 |
dbp mean, Mean ± SD | 64.2 ± 11.5 | 61.9 ± 9.9 | 65.0 ± 10.6 | 65.5 ± 12.8 | 63.5 ± 12.0 | 0.01 | 3.89 |
mbp mean, Mean ± SD | 78.1 ± 10.6 | 75.8 ± 8.9 | 78.7 ± 10.3 | 79.7 ± 11.0 | 77.4 ± 11.4 | < 0.01 | 4.95 |
resp rate mean, Mean ± SD | 19.2 ± 3.3 | 18.2 ± 2.9 | 18.4 ± 2.9 | 19.4 ± 3.1 | 20.5 ± 3.8 | < 0.01 | 27.29 |
temperature mean, Mean ± SD | 36.7 ± 0.7 | 36.7 ± 0.4 | 36.7 ± 0.5 | 36.7 ± 0.6 | 36.5 ± 1.0 | < 0.01 | 5.48 |
Glucose mean, Mean ± SD | 155.6 ± 60.0 | 138.3 ± 38.7 | 141.9 ± 47.5 | 154.1 ± 54.6 | 183.9 ± 76.4 | < 0.01 | 31.77 |
first sodium, Mean ± SD | 137.7 ± 4.2 | 137.5 ± 4.8 | 137.8 ± 3.5 | 137.1 ± 3.3 | 138.2 ± 5.1 | 0.03 | 2.96 |
first potassium, Mean ± SD | 4.2 ± 0.7 | 4.1 ± 0.6 | 4.1 ± 0.6 | 4.3 ± 0.6 | 4.4 ± 0.8 | < 0.01 | 12.71 |
first creatinine, Mean ± SD | 1.3 ± 1.0 | 0.9 ± 0.3 | 1.1 ± 0.7 | 1.1 ± 0.5 | 1.9 ± 1.6 | < 0.01 | 45.69 |
diabetes, n (%) | 288 (30.5) | 42 (27.3) | 83 (26.2) | 58 (27.2) | 105 (40.5) | < 0.01 | 16.92 |
mild liver disease, n (%) | 68 ( 7.2) | 7 (4.5) | 10 (3.2) | 12 (5.6) | 39 (15.1) | < 0.01 | 34.06 |
renal disease, n (%) | 166 (17.6) | 18 (11.7) | 41 (12.9) | 36 (16.9) | 71 (27.4) | < 0.01 | 25.74 |
charlson comorbidity index, Mean ± SD | 6.0 ± 2.5 | 5.9 ± 2.4 | 5.7 ± 2.2 | 5.7 ± 2.6 | 6.6 ± 2.7 | < 0.01 | 8.48 |