Table 2.
Model 1 (without Vitamin D) | Model 2 (with Vitamin D) | ||||||
---|---|---|---|---|---|---|---|
Independent Variables and Effects | Hazards Ratio |
Lower 95% Limit |
Upper 95% Limit |
Hazards Ratio |
Lower 95% Limit |
Upper 95% Limit |
|
Serum vitamin D (ng/mL) | Serum vitamin D < 20(ng/mL) | 2.11 | 1.11 | 4.00 | |||
Serum vitamin D ≥20(ng/mL) | 1.00 | 1.00 | 1.00 | ||||
Age | Years | 1.12 | 1.09 | 1.15 | 1.12 | 1.09 | 1.15 |
Sex | Female | 1.62 | 0.78 | 3.38 | 1.87 | 0.89 | 3.92 |
Male | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |
Race/Ethnicity | Non-Hispanic White | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Non-Hispanic Black | 2.03 | 1.04 | 3.95 | 1.60 | 0.87 | 2.93 | |
Hispanic | 1.40 | 0.62 | 3.18 | 1.30 | 0.58 | 2.93 | |
Other | 1.10 | 0.42 | 2.93 | 1.06 | 0.39 | 2.88 | |
Education | |||||||
< high school | 1.33 | 0.51 | 3.47 | 1.32 | 0.51 | 3.43 | |
High school | 1.16 | 0.48 | 2.82 | 1.18 | 0.48 | 2.86 | |
> high school | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |
Health insurance | Any | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
None | 2.45 | 1.12 | 5.36 | 2.42 | 1.07 | 5.45 | |
Body mass index (Kg/m2) | <20 | 0.53 | 0.16 | 1.75 | 0.54 | 0.16 | 1.78 |
20–<25 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |
25–<30 | 0.68 | 0.37 | 1.24 | 0.64 | 0.35 | 1.20 | |
≥30 | 1.52 | 0.69 | 3.35 | 1.41 | 0.62 | 3.24 | |
History of Colorectal Cancer | Yes | 7.22 | 2.12 | 24.59 | 7.19 | 2.15 | 24.02 |
No | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Notes: models also adjusted for month and region.