Table 1.
Baseline characteristics stratified by BMI categories
| <18.5 | ≥18.5 to <25 | 25 ≥ to <30 | 30 ≥ to <35 | 35 ≥ to <40 | >40 | P value | |
|---|---|---|---|---|---|---|---|
| n = 431 | n = 4271 | n = 5047 | n = 2908 | n = 1292 | n=1037 | ||
| Demographics | |||||||
| Age, mean (SD), yrs | 66.42 (17.4) | 66.0 (17.8) | 65.2 (15.9) | 63.9 (14.5) | 62.3 (13.6) | 58.1 (13.9) | <0.001 |
| Female, no. (%) | 273 (63.3) | 1972 (46.2) | 1783 (35.3) | 1091 (37.5) | 582 (5.1) | 578 (55.7) | <0.001 |
| Race, no. (%) | |||||||
| White | 308(71.38) | 3078 (72.1) | 3693 (73.7) | 2080 (71.5) | 952(73.7) | 724 (69.8) | <0.001 |
| Black | 8 (8.8) | 308 (7.2) | 336 (6.7) | 239 (8.2) | 117(9.1) | 123 (11.9) | |
| Hispanic | 7 (1.6) | 108 (2.5) | 177 (3.5) | 116 (4.0) | 49 (3.8) | 49 (3.8) | |
| Asian | 28 (6.5) | 183(4.3) | 107 (2.1) | 24 (0.8) | 7 (0.5) | 7 (0.5) | |
| Other | 12 (2.8) | 121 (2.8) | 129 (2.6) | 90 (3.1) | 37 (2.9) | 26 (2.5) | |
| Unknown | 38 (8.8) | 473 (11.1) | 605 (120.) | 359 (12.4) | 130 (10.1) | 123 (11.9) | |
| Cardiac Care Unit | 67 (15.5) | 808 (18.9) | 945 (19.1) | 555 (19.1) | 261 (20.2) | 184 (17.7) | <0.001 |
| Medical Care Unit | 187 (43.4) | 1416 (33.2) | 1464 (29.0) | 842 (29.0) | 402 (31.1) | 378 (36.5) | <0.001 |
| Surgical Care Unit | 177 (41.1) | 2047 (48.0) | 2638 (52.2) | 1511 (52.0) | 629(48.6) | 475 (45.8) | <0.001 |
| Past Medical History, no. (%) | |||||||
| Congestive Heart Failure | 46(10.7) | 407 (9.5) | 460 (9.1) | 256 (8.8) | 155 (12.0) | 142 (13.7) | <0.001 |
| Peripheral Vascular Disease | 48(11.1) | 445(10.4) | 524 (10.4) | 256 (8.8) | 130 (10.1) | 90 (7.7) | 0.24 |
| Hypertension | 133 (30.9) | 1461(34.2) | 1983(39.2) | 1240 (42.6) | 579 (44.8) | 442 (42.6) | <0.001 |
| Chronic Pulmonary Disease | 111 (25.8) | 785 (18.4) | 765 (15.2) | 512 (17.6) | 287(22.2) | 282 (27.9) | <0.001 |
| Diabetes | 64 (14.9) | 921 (21.6) | 1381 (27.4) | 1071 (36.8) | 591(45.7) | 467 (45.3) | <0.001 |
| Diuretic Use | 97 (22.5) | 1183 (27.7) | 1484 (29.4) | 1011 (34.8) | 511 (39.6) | 460 (44.4) | <0.001 |
| Ang. Conv. Inhibitor Use | 93 (21.6) | 1049 (24.6) | 1444 (28.7) | 919 (31.7) | 401 (31.1) | 336 (32.4) | <0.001 |
| Ang. Receptor Blocker Use | 23 (5.3) | 269 (6.3) | 438 (8.7) | 299 (10.3) | 152 (11.8) | 108 (10.4) | <0.001 |
| Admission Vitals, mean (SD) | |||||||
| Systolic blood pressure, mmHg | 123.7 (26.9) | 123.2 (24.8) | 123.1 (24.2) | 12336 (14.5) | 124.0 (24.4) | 124.4(24.6) | 0.55 |
| Diastolic blood pressure, mmHg | 64.6 (17.9) | 63.1 (15.6) | 63.8 (15.7) | 64.1 (15.8) | 64.6 (15.4) | 64.8 (17.0) | 0.002 |
| Heart rate, bpm | 89.8 (19.9) | 88.3 (19.2) | 87.1 (18.8) | 87.3(18.7) | 88.8 (19.1) | 91.0 (19.4) | <0.001 |
| Temperature, degrees °C | 36.3 (1.2) | 36.4 (1.0) | 36.5 (0.9 | 36.5 (0.9) | 36.6 (1.0) | 36.7 (0.9) | <0.001 |
| Admission Values, mean (SD) | |||||||
| Hemaglobin, % | 11.2 (2.1) | 11.7 (2.1) | 12.0 (2.2) | 12.2 (2.2) | 12.0 (2.2) | 11.8 (2.2) | <0.001 |
| Creatinine, mg/dl | 1.2 (1.2) | 1.1 (1.2) | 1.3 (1.3) | 1.2 (1.1) | 1.4 (1.3) | 1.4 (1.3) | <0.001 |
Mean (standard deviation) for continuous variables and number (within column percentages) for categorical variables provided. P values across groups provided.