Table 1.
Baseline characteristics of patients with type 2 diabetes in the NHANES study
| Characteristic | Mean ± SE or n (%) | |
|---|---|---|
| Patients, n | 3,277 | |
| Age (years) | 59.3 ± 0.3 | |
| Male | 1,708 (51.7) | |
| Race/ethnicity | ||
| Non-Hispanic White | 1,174 (61.0) | |
| Non-Hispanic Black | 848 (15.0) | |
| Hispanic Mexican | 548 (8.8) | |
| Other | 707 (15.2) | |
| Smoking status | ||
| Never | 1,586 (47.6) | |
| Former | 1,140 (34.7) | |
| Current | 545 (17.7) | |
| BMI (kg/m2) | 32.8 ± 0.2 | |
| TC/HDL-C ratio | 2.4 ± 0.1 | |
| Hypertension | 2,346 (69.1) | |
| CVD | 855 (25.0) | |
| Cancer | 422 (14.8) | |
| eGFR (mL/min/1.73 m2) | 84.9 ± 0.6 | |
| UACR (mg/g) | 133.2 ± 11.5 | |
| HbA1c | ||
| % | 7.4 ± 0.04 | |
| mmol/mol | 57.6 ± 0.5 | |
| Duration of diabetes (years) | 8.8 ± 0.3 | |
| Diabetic complications | 983 (27.4) | |
| Retinopathy | 573 (15.2) | |
| Foot ulcer | 123 (3.5) | |
| Peripheral neuropathy | 535 (15.1) | |
| Metformin use | 1,242 (39.5) | |
| B12 supplements | 1,047 (35.8) | |
| B12 intake from foods (μg/day) | 4.8 ± 0.2 | |
| Serum B12 (pg/mL) | 599.5 ± 7.4 | |
| Circulating MMA (nmol/L) | 201.5 ± 7.2 | |
Data were adjusted for survey weights of NHANES. The observed numbers for categorical variables were unweighted.