Table 2. Cox Proportional Hazards Model for Survival by Prediagnosis BMI.
| Characteristic | HR (95% CI) | P value |
|---|---|---|
| Prediagnosis BMI | ||
| Normal weight (<25) | 1 [Reference] | [Reference] |
| Overweight (25-30) | 1.26 (0.99-1.60) | .06 |
| Obese (≥30) | 1.45 (1.11-1.91) | .007 |
| Weight change | ||
| No change | 1 [Reference] | [Reference] |
| Weight loss (≥10%) | 1.09 (0.84-1.41) | .53 |
| Weight gain (≥10%) | 0.75 (0.60-0.95) | .02 |
| Age at initial diagnosis, y | ||
| 45-65 | 1 [Reference] | [Reference] |
| <45 | 1.18 (0.91-1.52) | .21 |
| ≥65 | 1.36 (1.05-1.74) | .02 |
| Sex | ||
| Men | 1 [Reference] | [Reference] |
| Women | 1.10 (0.90-1.35) | .35 |
| Race and ethnicity | ||
| Non-Hispanic White | 1 [Reference] | [Reference] |
| Non-Hispanic Black and Hispanic | 0.92 (0.71-1.19) | .53 |
| Othera | 0.84 (0.57-1.23) | .36 |
| Stage at initial diagnosis | ||
| I/II | 1 [Reference] | [Reference] |
| III | 1.26 (0.92-1.74) | .15 |
| IV | 1.46 (1.09-1.96) | .01 |
Abbreviations: BMI, body mass index; HR, hazard ratio.
a
Other race includes Asian or Pacific Islander, American Indian or Alaska Native, and other or not specified.