Table 1. Characteristics of unique patients, based on first encounter during 2016-2018.
| Characteristic | AI (n=3464) | NHWa (n=3626) | ||
| Age in years, median (IQR) | 64 | (59-71) | 68 | (61-75) |
| Female, n (%) | 2032 | (58.7) | 2192 | (60.5) |
| Hispanic, n (%) | 152 | (4.4) | 0 | (0.0) |
| Language, n (%) | ||||
| English | 3337 | (96.3) | 3614 | (99.7) |
| Other | 119 | (3.4) | 12 | (0.3) |
| Unknown | 8 | (0.2) | 0 | (0.0) |
| Married/life partner, n (%) | 1360 | (39.3) | 2273 | (62.7) |
| Zipcode, n (%) | ||||
| Urban | 2370 | (68.4) | 3220 | (88.8) |
| Rural | 1092 | (31.5) | 400 | (11.0) |
| Unknown | 2 | (0.1) | 6 | (0.2) |
| BMI in kg/m2, mean±SD b | 30.6 | ± 8.5 | 29.9 | ± 7.7 |
1. NHW were selected at random and matched by age and sex to AI sample at EHR data extraction
2. BMI data are missing for 32.6% of patients. BMI mean (95%CI) including the imputed data are 30.3 (29.5-31.1) and 29.2 (28.5-29.8) for AI and NHW, respectively.