Table 4:
Serum levels of 25(OH)D and overall survivala among EA patients, stratified by BMI (N=469)
| 25(OH)D Quartilesb | N deaths/patients | HRc | 95% Confidence Limits | ||
|---|---|---|---|---|---|
| BMI (≥18.5 and <25) | Quartile 1 (Highest) | 30/37 | REF | ||
| Quartile 2 | 26/38 | 0.68 | 0.40 | 1.17 | |
| Quartile 3 | 34/38 | 1.08 | 0.65 | 1.79 | |
| Quartile 4 (lowest) | 33/36 | 0.74 | 0.44 | 1.25 | |
| BMI (≥25 and <30) | Quartile 1 (Highest) | 45/56 | REF | ||
| Quartile 2 | 37/51 | 0.98 | 0.62 | 1.54 | |
| Quartile 3 | 37/50 | 0.83 | 0.53 | 1.29 | |
| Quartile 4 (lowest) | 32/45 | 1.14 | 0.71 | 1.82 | |
| BMI (≥30) | Quartile 1 (Highest) | 15/21 | REF | ||
| Quartile 2 | 18/29 | 1.32 | 0.65 | 2.67 | |
| Quartile 3 | 23/34 | 1.51 | 0.77 | 2.96 | |
| Quartile 4 (lowest) | 25/34 | 1.22 | 0.63 | 2.36 | |
a
Overall survival was calculated as time between date of blood draw and date of death or date last known to be alive.
b
Quartiles of vitamin D were determined accounting for month of blood draw.
c
Model estimates adjusted for the main effect of vitamin D, age, sex, smoking status, the main effect of BMI categories, year of diagnosis, chemotherapy, radiation, time-dependent surgery, and baseline hazard was stratified by tumor stage by lymph node status.