Table 1 Demographic information on patients undergoing THA, 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 (%) | 265,496 | 264,929 (99.8%) | 567 (0.2%) | |
Age (SD) | 65.4 (11.4) | 65.4 (11.4) | 69.1 (12.0) | <0.001 |
Sex | 0.001 | |||
Women | 145,714 (54.9%) | 145,363 (54.8%) | 351 (61.8%) | |
Men | 119,943 (45.1%) | 119,726 (45.2%) | 217 (38.2%) | |
Race/Ethnicity | 0.98 | |||
Non-Hispanic White | 186,136 (70.1%) | 185,735 (70.1%) | 401 (70.6%) | |
Non-Hispanic Black | 20,847 (7.9%) | 20,807 (7.9%) | 40 (7.0%) | |
Hispanic | 8,438 (3.2%) | 8,418 (3.2%) | 20 (3.5%) | |
Non-Hispanic Asian | 3.993 (1.5%) | 3.985 (1.5%) | 8 (1.4%) | |
Non-Hispanic Other | 1,684 (0.6%) | 1,680 (0.6%) | 4 (0.7%) | |
Race/ Ethnicity Unknown | 44,559 (16.8%) | 44,464 (16.8%) | 95 (16.7%) | |
Weight (lbs) (SD) | 189.0 (45.9) | 189.0 (45.9) | 156.4 (50.5) | <0.001 |
BMI (kg/m2) (SD) | 30.2 (6.3) | 30.2 (6.3) | 25.5 (7.1) | <0.001 |
Preoperative Albumin Level (SD) | 4.14 (0.42) | 4.14 (0.42) | 3.72 (0.60) | <0.001 |
Malnutrition (Albumin < 3.5 g/dL) | <0.001 | |||
Yes | 7,158 (5.1%) | 7,054 (5.1%) | 104 (30.8%) | |
No | 132,126 (94.9%) | 131,892 (94.9%) | 234 (69.2%) | |
Setting | 0.12 | |||
Inpatient | 247,725 (93.2%) | 247,186 (93.2%) | 539 (94.9%) | |
Outpatient | 17,932 (6.8%) | 17,903 (6.8%) | 29 (5.1%) | |
ASA Class | <0.001 | |||
1 | 9,533 (3.6%) | 9,527 (3.6%) | 6 (1.1%) | |
2 | 137,777 (51.9%) | 137,605 (51.9%) | 172 (30.3%) | |
3 | 112,428 (42.3%) | 112,092 (42.3%) | 336 (59.2%) | |
4 | 5,606 (2.1%) | 5,553 (2.1%) | 53 (9.3%) | |
5 | 21 (0.01%) | 21 (0.01%) | 0 (0.0%) | |
Unknown | 292 (0.1%) | 291 (0.1%) | 1 (0.2%) | |
Functional Status | <0.001 | |||
Independent | 259,477 (97.7%) | 258,988 (97.7%) | 489 (86.1%) | |
Partially Dependent | 4,799 (1.8%) | 4,730 (1.8%) | 69 (12.2%) | |
Totally Dependent | 286 (0.1%) | 277 (0.1%) | 9 (1.6%) | |
Unknown | 1,095 (0.4%) | 1,094 (0.4%) | 1 (0.2%) | |
Diabetes | 0.03 | |||
Yes | 32,483 (12.2%) | 32,397 (12.2%) | 86 (15.1%) | |
No | 233,174 (87.8%) | 232,692 (87.8%) | 482 (84.9%) | |
Smoking Status | <0.001 | |||
Smoker | 33,093 (12.5%) | 32,967 (12.4%) | 126 (22.2%) | |
Non-Smoker | 232,564 (87.5%) | 232,122 (87.6%) | 442 (77.8%) | |
History of CHF | <0.001 | |||
Yes | 1,058 (0.4%) | 1,045 (0.4%) | 13 (2.4%) | |
No | 264,599 (99.6%) | 264,044 (99.6%) | 555 (97.7%) | |
On Medication for Hypertension | 0.002 | |||
Yes | 146,558 (55.2%) | 146,208 (55.2%) | 350 (61.6%) | |
No | 119,099 (44.8%) | 118,881 (44.8%) | 218 (38.4%) | |
Renal Failure | <0.001 | |||
Yes | 173 (0.1%) | 170 (0.1%) | 3 (0.5%) | |
No | 265,484 (99.9%) | 264,919 (99.9%) | 565 (99.5%) | |
Dialysis | <0.001 | |||
Yes | 676 (0.3%) | 668 (0.3%) | 8 (1.4%) | |
No | 264,981 (99.7%) | 264,421 (99.7%) | 560 (98.6%) | |
Preoperative Wound Infection | <0.001 | |||
Yes | 849 (0.3%) | 827 (0.3%) | 22 (3.9%) | |
No | 264,808 (99.7%) | 264,262 (99.7%) | 546 (96.1%) | |
On Immuno-suppressive Therapy | <0.001 | |||
Yes | 9,865 (3.7%) | 9,808 (3.7%) | 57 (10.0%) | |
No | 255,792 (96.3%) | 255,281 (96.3%) | 511 (90.0%) | |
Bleeding Disorder | <0.001 | |||
Yes | 5,798 (2.2%) | 5,766 (2.2%) | 32 (5.6%) | |
No | 259,859 (97.8%) | 259,323 (97.8%) | 536 (94.4%) |