Table 2 Demographic information on patients undergoing THA with a BMI > 35, stratified by preoperative weight loss of >10% of body weight in 6 months prior to surgery
From: Preoperative weight loss before total hip arthroplasty negatively impacts postoperative outcomes
Characteristic | Total Sample | No Weight Loss | Weight Loss | P-value |
|---|---|---|---|---|
N (%) | 54,491 | 54,388 (99.8%) | 103 (0.2%) | |
Age (SD) | 62.3 (10.2) | 62.3 (10.2) | 63.9 (10.1) | 0.11 |
Sex | 0.63 | |||
Women | 29,920 (54.9%) | 29,861 (54.9%) | 59 (57.3%) | |
Men | 24,571 (45.1%) | 24,527 (45.1%) | 44 (42.7%) | |
Race/Ethnicity | 0.14 | |||
Non-Hispanic White | 38,133 (70.0%) | 38,055 (70.0%) | 78 (75.7%) | |
Non-Hispanic Black | 5,879 (10.8%) | 5,874 (10.8%) | 5 (4.9%) | |
Hispanic | 1,850 (3.4%) | 1,847 (3.4%) | 3 (2.9%) | |
Non-Hispanic Asian | 269 (0.5%) | 267 (0.5%) | 2 (1.9%) | |
Non-Hispanic Other | 462 (0.9%) | 461 (0.9%) | 1 (1.0%) | |
Race/ Ethnicity Unknown | 7,898 (14.5%) | 7,884 (14.5%) | 14 (13.6%) | |
Weight (lbs) (SD) | 245.4 (38.9) | 245.4 (38.9) | 234.0 (44.8) | 0.003 |
BMI (kg/m2) (SD) | 39.5 (4.3) | 39.5 (4.3) | 37.5 (5.0) | <0.001 |
Preoperative Albumin Level (SD) | 4.11 (0.41) | 4.11 (0.41) | 3.90 (0.53) | <0.001 |
Malnutrition (Albumin <3.5g/dL) | <0.001 | |||
Yes | 1,421 (4.8%) | 1,412 (4.8%) | 9 (14.5%) | |
No | 28,276 (95.2%) | 28,223 (95.2%) | 53 (85.5%) | |
Setting | 0.59 | |||
Inpatient | 51,151 (93.9%) | 51,053 (93.9%) | 98 (95.1%) | |
Outpatient | 3,340 (6.1%) | 3,335 (6.1%) | 5 (4.9%) | |
ASA Class | 0.07 | |||
1 | 367 (0.7%) | 367 (0.7%) | 0 (0.0%) | |
2 | 18,707 (34.3%) | 18,676 (34.3%) | 31 (30.1%) | |
3 | 33,826 (62.1%) | 33,762 (62.1%) | 64 (62.1%) | |
4 | 1,535 (2.8%) | 1,527 (2.8%) | 8 (7.8%) | |
5 | 21 (0.01%) | 21 (0.01%) | 0 (0.0%) | |
Unknown | 50 (0.1%) | 50 (0.1%) | 0 (0.0%) | |
Functional Status | 0.01 | |||
Independent | 53,125 (97.5%) | 53,029 (97.5%) | 96 (93.2%) | |
Partially Dependent | 1,074 (2.0%) | 1,067 (2.0%) | 7 (6.8%) | |
Totally Dependent | 31 (0.1%) | 31 (0.1%) | 0 (0.0%) | |
Unknown | 261 (0.5%) | 261 (0.4%) | 0 (0.0%) | |
Diabetes | 0.25 | |||
Yes | 11,760 (21.6%) | 11,733 (21.6%) | 27 (26.2%) | |
No | 42,731 (78.4%) | 42,655 (78.4%) | 76 (73.8%) | |
Smoking Status | 0.40 | |||
Smoker | 6,465 (11.9%) | 6,450 (11.9%) | 15 (14.6%) | |
Non-Smoker | 48,026 (88.1%) | 47,938 (88.1%) | 88 (85.4%) | |
History of CHF | 0.03 | |||
Yes | 266 (0.5%) | 264 (0.5%) | 2 (1.9%) | |
No | 54,225 (99.5%) | 54,124 (99.5%) | 101 (98.1%) | |
On Medication for Hypertension | 0.16 | |||
Yes | 37,391 (68.6%) | 37,327 (68.6%) | 64 (62.1%) | |
No | 17,100 (31.4%) | 17,061 (31.4%) | 39 (37.9%) | |
Renal Failure | <0.001 | |||
Yes | 28 (0.1%) | 26 (0.1%) | 2 (1.9%) | |
No | 54,463 (99.9%) | 54,362 (99.9%) | 101 (98.1%) | |
Dialysis | 0.11 | |||
Yes | 124 (0.2%) | 123 (0.2%) | 1 (1.0%) | |
No | 54,367 (99.8%) | 54,265 (99.8%) | 102 (99.0%) | |
Preoperative Wound Infection | 0.54 | |||
Yes | 194 (0.4%) | 194 (0.4%) | 0 (0.0%) | |
No | 54,297 (99.6%) | 54,194 (99.6%) | 103 (100.0%) | |
On Immuno-suppressive Therapy | 0.71 | |||
Yes | 1,954 (3.6%) | 1,951 (3.6%) | 3 (2.9%) | |
No | 52,537 (96.4%) | 52,437 (96.4%) | 100 (97.1%) | |
Bleeding Disorder | 0.65 | |||
Yes | 1,226 (2.2%) | 1,223 (2.2%) | 3 (2.9%) | |
No | 53,265 (97.8%) | 53,165 (97.8%) | 100 (97.1%) |