Table 3.
Patient demographic characteristics among incident cases
| 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | All | |
|---|---|---|---|---|---|---|---|---|---|
| N | 213 | 252 | 245 | 295 | 377 | 339 | 297 | 189 | 2207 |
| Age, mean (SD), y | 63 (12) | 64 (13) | 63 (13) | 65 (13) | 64 (13) | 65 (14) | 63 (12) | 63 (13) | 64 (13) |
| 18-34, n (%) | 3 (1.4) | 1 (0.4) | 6 (2.4) | 3 (1.0) | 7 (1.9) | 4 (1.2) | 4 (1.3) | 3 (1.6) | 31 (1.4) |
| 35-54, n (%) | 44 (20.7) | 66 (26.2) | 58 (23.7) | 44 (14.9) | 73 (19.4) | 72 (21.2) | 62 (20.9) | 39 (20.6) | 458 (20.8) |
| 55-64, n (%) | 88 (41.3) | 67 (26.6) | 78 (31.8) | 107 (36.3) | 121 (32.1) | 101 (29.8) | 98 (33.0) | 71 (37.6) | 731 (33.1) |
| 65+, n (%) | 78 (36.6) | 118 (46.8) | 103 (42.0) | 141 (47.8) | 176 (46.7) | 162 (47.8) | 133 (44.8) | 76 (40.2) | 987 (44.7) |
| Female, n (%) | 95 (44.6) | 122 (48.4) | 110 (44.9) | 150 (50.8) | 153 (40.6) | 153 (45.1) | 143 (48.1) | 94 (49.7) | 1020 (46.2) |
| Region, n (%) | |||||||||
| Midwest | 69 (32.4) | 85 (33.7) | 74 (30.2) | 89 (30.2) | 89 (23.6) | 77 (22.7) | 71 (23.9) | 43 (22.8) | 597 (27.1) |
| Northeast | 23 (10.8) | 40 (15.9) | 53 (21.6) | 56 (19.0) | 104 (27.6) | 71 (20.9) | 69 (23.2) | 41 (21.7) | 457 (20.7) |
| South | 79 (37.1) | 74 (29.4) | 78 (31.8) | 97 (32.9) | 127 (33.7) | 126 (37.2) | 122 (41.1) | 73 (38.6) | 776 (35.2) |
| West | 42 (19.7) | 53 (21.0) | 40 (16.3) | 53 (18.0) | 57 (15.1) | 65 (19.2) | 35 (11.8) | 32 (16.9) | 377 (17.1) |
| Insurance type, n (%) | |||||||||
| Commercial | 136 (63.8) | 136 (54.0) | 142 (58.0) | 157 (53.2) | 200 (53.1) | 177 (52.2) | 164 (55.2) | 119 (63.0) | 1231 (55.8) |
| Medicare supplemental* | 77 (36.2) | 116 (46.0) | 103 (42.0) | 138 (46.8) | 177 (46.9) | 162 (47.8) | 133 (44.8) | 70 (37.0) | 976 (44.2) |
*
A Medicare supplemental insurance (Medigap) policy, sold by private companies, can help pay some of the health care costs that original Medicare does not cover (eg, copayments, coinsurance, and deductibles).