Table 1 Patient characteristics of the study groups
|  | BMI 30 ≥ and No Weight Loss | BMI ≥ 30 and Weight Loss | P Value |
|---|---|---|---|
n | 567 | 302 | Â |
Surgery | |||
 Total Hip Arthroplasty | 218 (38%) | 115 (38%) |  |
 Total Knee Arthroplasty | 349 (62%) | 187 (62%) |  |
 Age (years) | 63.6 ± 9.4 | 63.6 ± 9.4 | 0.932 |
 Sex (female) | 348 (61%) | 182 (60%) | 0.749 |
 Race (Caucasian) | 462 (82%) | 248 (82%) | 0.974 |
 Body mass index | 36.7 ± 5.6 | 36.5 ± 5.4 | 0.712 |
 Functional status (Dependent) | 23 (4%) | 14 (4%) | 0.861 |
 Point of origin other than home | 2 (<1%) | 4 (1%) | 0.099 |
 Smoker within 1 year | 53 (9%) | 32 (11%) | 0.555 |
 Chronic steroid use | 22 (4%) | 22 (7%) | 0.029 |
 Diabetes | 101 (18%) | 79 (26%) | 0.004 |
 Hypertension | 389 (69%) | 221 (73%) | 0.161 |
 Chronic obstructive pulmonary disease | 20 (4%) | 23 (8%) | 0.008 |
 Congestive heart failure | 4 (1%) | 9 (3%) | 0.009 |
 Bleeding disorders | 18 (3%) | 14 (5%) | 0.276 |
 Serum albumin level (g/dL) | 4.08 ± 0.37 | 3.90 ± 0.52 | <0.001 |
 Dyspnea | 45 (8%) | 35 (12%) | 0.076 |
 American Society of Anesthesiologists Physical Status Classification | 359 (63%) | 193 (64%) | 0.998 |