Table 5. Association of Percentage BMI Reduction With Intraoperative or 30-Day Postoperative Mortality.
| Model | OR (95% CI) by percentage BMI reduction | P for trend | |||
|---|---|---|---|---|---|
| 0% (n = 86 229) | >0% to <5.0% (n = 240 362) | 5.0%-9.9% (n = 118 094) | ≥10.0% (n = 35 390) | ||
| Deaths, No. (%) | 106 (0.1) | 229 (<0.1) | 129 (0.1) | 47 (0.1) | NA |
| Model 1a | 1 [Reference] | 0.73 (0.58-0.91) | 0.67 (0.52-0.87) | 0.65 (0.46-0.92) | .02 |
| Model 2b | 1 [Reference] | 0.76 (0.60-0.96) | 0.70 (0.54-0.92) | 0.58 (0.41-0.82) | .003 |
| Model 3c | 1 [Reference] | 0.75 (0.59-0.95) | 0.69 (0.53-0.90) | 0.57 (0.40-0.81) | .003 |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); NA, not applicable; OR, odds ratio.
a
Model 1 was adjusted for age, sex, race/ethnicity, and highest recorded preoperative BMI.
b
Model 2 was adjusted for covariates included in model 1 plus Current Procedural Terminology principal operation, history of bariatric surgery, whether the bariatric surgery was a revision or conversion, and whether the patient underwent emergency surgery during the hospital admission.
c
Model 3 was adjusted for covariates included in model 2 plus smoking status and comorbidities (ie, 0, 1, or ≥2 conditions).