TABLE 2.
Patient characteristics: comparison of bloodless patients to matched control patients*
| Parameter | All inpatients
|
All medical inpatients
|
All surgical inpatients
|
||||||
|---|---|---|---|---|---|---|---|---|---|
| Bloodless patients (n = 294) | Matched controls (n = 1157) | p value | Bloodless patients (n = 196) | Matched controls (n = 690) | p value | Bloodless patients (n = 98) | Matched controls (n = 467) | p value | |
| Age (years) | 44 ± 25 | 44 ± 25 | 0.91 | 42 ± 25 | 41 ± 25 | 0.38 | 47 ± 24 | 48 ± 23 | 0.59 |
| Male sex | 117 (39.8) | 465 (40.2) | 0.95 | 73 (37.2) | 257 (37.2) | 0.99 | 44 (44.9) | 208 (44.5) | 0.95 |
| Diabetes mellitus | 76 (25.9) | 278 (24.0) | 0.54 | 53 (27.0) | 158 (22.9) | 0.25 | 23 (23.5) | 120 (25.7) | 0.64 |
| Hypertension | 130 (44.2) | 478 (41.3) | 0.39 | 90 (45.9) | 282 (40.9) | 0.22 | 40 (40.8) | 196 (42.0) | 0.83 |
| Angina | 5 (1.7) | 20 (1.7) | 0.97 | 3 (1.5) | 12 (1.7) | 0.84 | 2 (2.0) | 8 (1.7) | 0.82 |
| Ischemic heart disease | 36 (12.2) | 122 (10.5) | 0.40 | 25 (12.8) | 63 (9.1) | 0.14 | 11 (11.2) | 59 (12.6) | 0.70 |
| History of stroke | 21 (7.1) | 83 (7.2) | 0.89 | 16 (8.2) | 49 (7.1) | 0.64 | 5 (6.1) | 34 (7.3) | 0.68 |
| History of PE | 6 (2.0) | 22 (1.9) | 0.81 | 4 (2.0) | 6 (0.9) | 0.24 | 2 (2.0) | 16 (3.4) | 0.75 |
| History of DVT | 7 (2.4) | 31 (2.7) | 0.78 | 4 (2.0) | 14 (2.0) | 0.99 | 3 (3.1) | 17 (3.6) | 0.78 |
| History of cancer | 23 (7.8) | 89 (7.7) | 0.90 | 12 (6.1) | 40 (5.8) | 0.86 | 11 (11.2) | 49 (10.5) | 0.83 |
| Overweight | 26 (8.8) | 140 (12.1) | 0.12 | 23 (11.7) | 80 (11.6) | 0.99 | 3 (3.1) | 60 (12.8) | 0.005 |
| Renal disease | 66 (22.5) | 224 (19.4) | 0.25 | 51 (26.0) | 148 (21.5) | 0.18 | 15 (15.3) | 76 (16.3) | 0.81 |
| Congestive heart failure | 38 (12.9) | 128 (11.1) | 0.36 | 32 (16.3) | 84 (12.2) | 0.15 | 6 (6.2) | 44 (9.4) | 0.30 |
| Peripheral vascular disease | 29 (9.9) | 83 (7.2) | 0.14 | 17 (8.7) | 44 (6.4) | 0.26 | 12 (12.2) | 39 (8.4) | 0.24 |
| COPD | 48 (16.3) | 166 (14.3) | 0.41 | 38 (19.4) | 125 (18.1) | 0.68 | 10 (10.2) | 41 (8.8) | 0.65 |
| APR-DRG complexity | 2 (2–3) | 2 (2–3) | 0.46 | 2 (2–3) | 2 (2–3) | 0.36 | 2 (1–3) | 2 (2–3) | 0.09 |
| Charlson score | 1 (0–2.25) | 1 (0–3) | 0.93 | 1 (0–2.75) | 1 (0–3) | 0.85 | 1 (0–2.25) | 1 (0–3) | 0.94 |
| ASA classification (surgical patients only) | 3 (2–3) | 3 (2–3) | 0.30 | ||||||
*
Data are reported as mean ± SD, number (%), or median (IQR).
ASA = American Society of Anesthesiologists; COPD = chronic obstructive pulmonary disease; DVT = deep venous thrombosis; PE = pulmonary embolus.