Table 2.
Baseline characteristics by serum 25(OH)D status of adult cancer survivors (NHANES 2003–2010).
| Characteristics | High serum 25(OH)D (n = 1208) | Low serum 25(OH)D (n = 411) | P value |
|---|---|---|---|
| Weighted number | 12,274,515 | 3,151,837 | |
| Age (years) | 65.04 ± 0.47 | 64.38 ± 0.95 | 0.511 |
| Sex, n (%) | 0.018 | ||
| Female | 598 (55.1) | 231 (63.7) | |
| Male | 610 (44.9) | 180 (36.3) | |
| Ethnicity, n (%) | < 0.001 | ||
| Non-Hispanic White | 1023 (93.0) | 225 (74.9) | |
| Non-Hispanic Black | 81 (2.6) | 116 (14.5) | |
| Mexican American/Hispanic | 31 (1.1) | 15 (1.6) | |
| Other | 73 (3.3) | 55 (9.0) | |
| Education, n (%) | 0.001 | ||
| Less than high school | 280 (16.1) | 140 (23.7) | |
| High school and above | 928 (83.9) | 271 (76.3) | |
| Marital status, n (%) | < 0.001 | ||
| Married/with a partner | 792 (69.7) | 219 (57.7) | |
| Widowed/divorced/separated | 371 (26.7) | 178 (39.2) | |
| Single | 45 (3.6) | 14 (3.1) | |
| Body mass index, n (%) | 0.003 | ||
| Normal | 346 (29.8) | 89 (23.8) | |
| Underweight | 21 (2.0) | 9 (1.6) | |
| Overweight | 466 (37.3) | 133 (31.2) | |
| Obesity | 375 (30.9) | 180 (43.4) | |
| Smoking status, n (%) | < 0.001 | ||
| Never | 533 (44.6) | 171 (40.7) | |
| Ever | 554 (43.9) | 143 (32.3) | |
| Now | 121 (11.5) | 97 (27.0) | |
| Physical activity, n (%) | < 0.001 | ||
| Inactive | 825 (67.8) | 343 (86.1) | |
| Active | 383 (32.2) | 68 (13.9) | |
| Hypertension, n (%) | 0.489 | ||
| Absence | 529 (48.5) | 157 (46.0) | |
| Presence | 679 (51.5) | 254 (54.0) | |
| Diabetes mellitus, n (%) | 0.095 | ||
| Absence | 1011 (86.1) | 313 (82.4) | |
| Presence | 197 (13.9) | 98 (17.6) | |
| Cardiovascular disease, n (%) | < 0.001 | ||
| Absence | 907 (80.0) | 271 (70.8) | |
| Presence | 301 (20.0) | 140 (29.2) |
All continuous variables were presented as weighted mean and SE; all categorical variables were expressed as non-weighted numbers and weighted percentages. Low serum 25(OH)D was defined as 25(OH)D < 50 nmol/L.