| Age (y); mean ± SD [median] |
51.02 ± 14.97
[52.00] |
57.05 ± 12.16
[58.00] |
58.07 ± 11.74
[58.00] |
60.12 ± 11.27
[60.00] |
61.29 ± 10.93
[61.00] |
62.79 ± 12.03
[62.00] |
| Male, n (%) |
1 337 970 (40.4) |
96 769 (56.1) |
6770 (58.8) |
2898 (66.9) |
1190 (76.8) |
8740 (74.9) |
| Region of residence, n (%) |
|
|
|
|
|
|
| South |
1 621 109 (49.0) |
71 407 (41.4) |
4047 (35.1) |
1659 (38.3) |
571 (36.9) |
4469 (38.3) |
| Midwest/North Central |
699 450 (21.1) |
38 393 (22.3) |
3200 (27.8) |
1072 (24.7) |
380 (24.5) |
3135 (26.8) |
| Northeast |
578 927 (17.5) |
41 045 (23.8) |
2775 (24.1) |
1078 (24.9) |
413 (26.7) |
2624 (22.5) |
| West |
405 824 (12.3) |
21 452 (12.4) |
1479 (12.8) |
519 (12.0) |
185 (11.9) |
1434 (12.3) |
| Unknown |
5075 (0.2) |
184 (0.1) |
15 (0.1) |
4 (0.1) |
0 (0.0) |
14 (0.1) |
Duration of study period
(mo), mean ± SD [median] |
22.92 ± 15.94
[19.74] |
18.86 ± 13.33
[15.63] |
17.64 ± 12.83
[14.57] |
18.19 ± 12.92
[15.00] |
18.05 ± 13.21
[14.24] |
16.59 ± 13.92
[11.91] |
| ≥12 mo, n (%) |
2 218 827 (67.0) |
104 101 (60.4) |
6571 (57.1) |
2589 (59.8) |
885 (57.1) |
5756 (49.3) |
Charlson Comorbidity
Index,a mean ± SD |
0.99 ± 1.66 |
1.06 ± 1.71 |
1.08 ± 1.73 |
1.14 ± 1.80 |
1.29 ± 1.88 |
5.63 ± 2.73 |