Table 1. Patient characteristics for the overall population as well as stratified by 2 serum vitamin D categories.
| Categorical Variables | Overall Population (n = 125) | Deficient: <20 ng/ml (n = 32) | Not deficient: > = 20 ng/ml (n = 93) | P-value comparing deficient and non-deficient groups |
| SGA | 0.17 | |||
| Well-nourished | 110 | 26 (23.6) | 84 (76.4) | |
| Moderately malnourished | 15 | 6 (40.0) | 9 (60.0) | |
| ECOG Score | 0.88 | |||
| 0 | 76 | 21 (27.6) | 55 (72.4) | |
| 1 | 30 | 6 (20.0) | 24 (80.0) | |
| 2 | 12 | 3 (25.0) | 9 (75.0) | |
| 3 | 7 | 2 (28.6) | 5 (71.4) | |
| Season of Blood Draw | 0.02* | |||
| Summer | 33 | 5 (15.2) | 28 (84.8) | |
| Fall | 30 | 9 (30.0) | 21 (70.0) | |
| Winter | 26 | 3 (11.5) | 23 (88.5) | |
| Spring | 36 | 15 (41.7) | 21 (58.3) | |
| CTCA Hospital | 0.48 | |||
| Philadelphia, PA | 20 | 4 (20.0) | 16 (80.0) | |
| Zion, IL | 72 | 22 (30.6) | 50 (69.4) | |
| Tulsa, OK | 25 | 4 (16.0) | 21 (84.0) | |
| Goodyear, AZ | 8 | 2 (25.0) | 6 (75.0) | |
| PSA | 0.24 | |||
| < median, 18.2 | 62 | 13 (21%) | 49 (79%) | |
| > = median, 18.2 | 63 | 19 (30.2%) | 44 (69.8%) | |
| Bone Metastasis | 0.20 | |||
| No | 51 | 10 (19.6%) | 41 (80.4%) | |
| Yes | 74 | 22 (29.7%) | 52 (70.3%) | |
| Continuous Variables | Overall Population (n = 125) | Deficient: <20 ng/ml (n = 32) | Not deficient: > = 20 ng/ml (n = 93) | P-value |
| Mean age (years) | 60 | 59.2 | 60.3 | 0.52 |
| Mean BMI (kg/m2) | 29.4 | 30.5 | 29.0 | 0.16 |
| Mean serum corrected calcium (mg/dl) | 9.2 | 9.2 | 9.2 | 0.91 |
| Mean serum albumin (g/dl) | 4 | 3.8 | 4.0 | 0.05* |
| Mean PSA (ng/ml) | 91.4 | 133.5 | 76.9 | 0.32 |
(SGA = Subjective Global Assessment, ECOG = Eastern Cooperative Oncology Group, CTCA = Cancer Treatment Centers of America, PA = Pennsylvania, IL = Illinois, OK = Oklahoma, AZ = Arizona, PSA = Prostate Specific Antigen, BMI = Body Mass Index, g/dl = grams per deciliter, ng/ml = nanograms per milliliter, kg/m2 = kilograms per meter squared, mg/dl = milligrams per deciliter)
*P < = 0.05