Table 1.
Baseline characteristics of Olmsted County residents with a serum 25(OH)D measurement between 1/1/2005 and 12/31/2011 and no prior history of cancer.
| Serum 25(OH)D categories (ng/mL) | ||||||
|---|---|---|---|---|---|---|
| Characteristics | Total | <12 | 12–19 | 20–50 | >50 | P value |
| n | 8700 | 515 | 1331 | 6420 | 434 | |
| 25(OH)D, Mean (SD), ng/mL | 29.7 (12.8) | 8.5 (2.1) | 15.9 (2.3) | 32.1 (7.6) | 61.2 (15.1) | |
| Age, mean (SD), years | 51.5 (16.4) | 47.8 (16.3) | 49.5 (16.0) | 52.1 (16.4) | 52.7 (17.6) | .10a |
| Age groups, n (%) | ||||||
| 18–49 yr | 3848 (44.2) | 285 (55.3) | 658 (49.4) | 2727 (42.5) | 178 (41.0) | |
| 50–64 yr | 3066 (35.2) | 162 (31.5) | 459 (34.5) | 2291 (35.7) | 154 (35.5) | |
| ≥65 yr | 1786 (20.5) | 68 (13.2) | 214 (16.1) | 1402 (21.8) | 102 (23.5) | |
| Sex, n (%) | <.001 | |||||
| Women | 6796 (78.1) | 376 (73.0) | 984 (73.9) | 5045 (78.6) | 391 (90.1) | |
| Race, n (%) | <.001 | |||||
| Non-white | 1240 (14.3) | 207 (40.2) | 370 (27.8) | 646 (10.1) | 17 (3.9) | |
| Season, n (%) | <.001 | |||||
| Winter, Dec-Feb | 2176 (25.0) | 177 (34.4) | 400 (30.1) | 1521 (23.7) | 78 (18.0) | |
| Spring, Mar-May | 2267 (26.1) | 166 (32.2) | 425 (31.9) | 1556 (24.2) | 120 (27.6) | |
| Summer, Jun-Aug | 1969 (22.6) | 78 (15.1) | 195 (14.7) | 1572 (24.5) | 124 (28.6) | |
| Fall, Sept-Nov | 2288 (26.3) | 94 (18.3) | 311 (23.4) | 1771 (27.6) | 112 (25.8) | |
| Charlson Comorbidity Index, mean (SD) | 2.5 (2.5) | 2.6 (2.9) | 2.5 (2.7) | 2.4 (2.4) | 2.6 (2.4) | .04a |
| BMI, mean (SD) | 29.0 (7.6) | 32.2 (10.1) | 31.2 (8.3) | 28.5 (7.1) | 25.5 (6.1) | −.22b |
| HOUSES Z, c mean (SD) | −0.10 (3.51) | −1.51 (3.16) | −0.96 (3.39) | 0.16 (3.50) | 0.40 (3.58) | .12b |
| Ever Smoked d | 3841 (47.9) | 261 (55.4) | 641 (52.5) | 2750 (46.5) | 189 (46.0) | <.001 |
| Hypertension | 3294 (37.9) | 221 (42.9) | 528 (39.7) | 2389 (37.2) | 156 (35.9) | .03 |
| Hyperlipidemia | 4291 (49.3) | 214 (41.6) | 636 (47.8) | 3222 (50.2) | 219 (50.5) | .001 |
| Osteopenia/Osteoporosis | 2998 (34.5) | 130 (25.3) | 376 (28.2) | 2298 (35.8) | 194 (44.9) | <.001 |
a
Spearman Correlation
b
Pearson Correlation
c
Available in 8206
d
Available in 8012