Table 2. Characteristics of included risk factors in the cohort.
| Control | Case | Overall | |
| (n=15607) | (n=849) | (n=16456) | |
| BaselineAGE | |||
| Mean (SD) | 73.9 (5.94) | 76.5 (6.54) | 74.0 (6.00) |
| Gender | |||
| Female | 8981 (57.5%) | 474 (55.8%) | 9455 (57.5%) |
| Male | 6626 (42.5%) | 375 (44.2%) | 7001 (42.5%) |
| RACEETHNICITY | |||
| Hispanic | 277 (1.8%) | 20 (2.4%) | 297 (1.8%) |
| NHB* | 2324 (14.9%) | 141 (16.6%) | 2465 (15.0%) |
| NHW* | 12588 (80.7%) | 667 (78.6%) | 13255 (80.5%) |
| Other | 418 (2.7%) | 21 (2.5%) | 439 (2.7%) |
| insurancetype | |||
| MEDICAID | 140 (0.9%) | 4 (0.5%) | 144 (0.9%) |
| MEDICARE | 11568 (74.1%) | 694 (81.7%) | 12262 (74.5%) |
| No payment* | 48 (0.3%) | 2 (0.2%) | 50 (0.3%) |
| Other | 470 (3.0%) | 3 (0.4%) | 473 (2.9%) |
| OtherGOV | 161 (1.0%) | 19 (2.2%) | 180 (1.1%) |
| PRIVATE | 3220 (20.6%) | 127 (15.0%) | 3347 (20.3%) |
| BMI | |||
| Mean (SD) | 28.9 (6.18) | 27.9 (6.75) | 38.5 (889) |
| SMOKING | |||
| Current Smoker | 1000 (6.4%) | 46 (5.4%) | 1046 (6.4%) |
| Former smoker | 6301 (40.4%) | 337 (39.7%) | 6638 (40.3%) |
| Never smoker | 8306 (53.2%) | 466 (54.9%) | 8772 (53.3%) |
| depression | 1837 (11.8%) | 175 (20.6%) | 2012 (12.2%) |
| anxiety | 1859 (11.9%) | 145 (17.1%) | 2004 (12.2%) |
| sleepdisorder | 1578 (10.1%) | 123 (14.5%) | 1701 (10.3%) |
| hypertension | 10208 (65.4%) | 600 (70.7%) | 10808 (65.7%) |
| diabetes | 4081 (26.1%) | 254 (29.9%) | 4335 (26.3%) |
| heartdisease | 1701 (10.9%) | 136 (16.0%) | 1837 (11.2%) |
| statin | 4646 (29.8%) | 333 (39.2%) | 4979 (30.3%) |
*
NHB stands for non-Hispanic black; NHW stands for non-Hispanic White; No payment includes self-pay, nor charge, refusal to pay/bad debt, hill burton free care, research/donor, and other.