Table 1 Demographic characteristics of AOM patients
Variable | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | Mean (range) |
|---|---|---|---|---|---|---|---|---|
AOM patients, n | 1,862,125 | 2,332,888 | 2,519,193 | 3,014,969 | 2,996,079 | 2,403,475 | 2,512,720 | 2,520,207 (1,862,125–3,014,969) |
Age (y) | ||||||||
Mean (SD) | 18.7 (20.7) | 19.1 (20.9) | 19.7 (21.3) | 19.9 (21.3) | 20.2 (21.3]) | 21.3 (22.0) | 22.0 (21.9) | 20.1 (18.7–22.0) |
Median | 8 | 9 | 9 | 9 | 10 | 11 | 12 | 10 (8–12) |
Age range, n (%) | ||||||||
< 1 y | 166,785 (9.0) | 193,895 (8.3) | 203,662 (8.1) | 225,800 (7.5) | 225,670 (7.5) | 172,411 (7.2) | 175,355 (7.0) | 7.8 (7.0–9.0) |
1 y | 174,212 (9.4) | 209,180 (9.0) | 223,144 (8.9) | 254,902 (8.5) | 250,197 (8.4) | 195,332 (8.1) | 198,919 (7.9) | 8.6 (7.9–9.4) |
2–4 y | 342,888 (18.4) | 420,827 (18.0) | 450,393 (17.9) | 533,726 (17.7) | 516,963 (17.3) | 401,101 (16.7) | 397,208 (15.8) | 17.4 (15.8–18.4) |
5–17 y | 508,926 (27.3) | 652,434 (28.0) | 692,930 (27.5) | 848,642 (28.1) | 824,756 (27.5) | 639,879 (26.6) | 649,593 (25.9) | 27.3 (25.9–28.1) |
18–49 y | 436,012 (23.4) | 556,016 (23.8) | 603,437 (24.0) | 730,878 (24.2) | 753,916 (25.2) | 613,892 (25.5) | 682,419 (27.2) | 24.8 (23.4–27.2) |
50–64 y | 192,979 (10.4) | 243,496 (10.4) | 275,264 (10.9) | 330,137 (10.9) | 339,436 (11.3) | 291,402 (12.1) | 326,341 (13.0) | 11.3 (10.4–13.0) |
65–74 y | 22,369 (1.2) | 33,277 (1.4) | 41,710 (1.7) | 54,066 (1.8) | 51,672 (1.7) | 56,053 (2.3) | 52,674 (2.1) | 1.7 (1.2–2.3) |
75–84 y | 13,951 (0.7) | 18,220 (0.8) | 21,829 (0.9) | 27,581 (0.9) | 24,824 (0.8) | 24,976 (1.0) | 22,466 (0.9) | 0.9 (0.7–1.0) |
≥ 85 y | 4003 (0.2) | 5543 (0.2) | 6824 (0.3) | 9237 (0.3) | 8645 (0.3) | 8429 (0.4) | 7745 (0.3) | 0.3 (0.2–0.4) |
Male, n (%) | 871,434 (46.8) | 1,090,070 (46.7) | 1,175,316 (46.7) | 1,406,050 (46.6) | 1,392,011 (46.5) | 1,104,083 (45.9) | 1,141,612 (45.4) | 46.4 (45.4–46.8) |
Insurance, n (%) | ||||||||
Commercial a | 1,820,948 (97.8) | 2,274,874 (97.5) | 2,447,618 (97.2) | 2,922,112 (96.9) | 2,909,203 (97.1) | 2,312,057 (96.2) | 2,428,161 (96.6) | 97.0 (96.2–97.8) |
Medicare b | 41,177 (2.2) | 58,014 (2.5) | 71,575 (2.8) | 92,857 (3.1) | 86,876 (2.9) | 91,418 (3.8) | 84,559 (3.4) | 3.0 (2.2–3.8) |
US geographic region, n (%) | ||||||||
Northeast | 169,659 (9.1) | 285,197 (12.2) | 368,765 (14.6) | 565,050 (18.7) | 540,654 (18.0) | 438,273 (18.2) | 515,136 (20.5) | 15.9 (9.1–20.5) |
North Central | 481,564 (25.9) | 632,555 (27.1) | 648,970 (25.8) | 784,658 (26.0) | 746,438 (24.9) | 539,270 (22.4) | 546,186 (21.7) | 24.8 (21.7–27.1) |
South | 945,338 (50.8) | 1,105,089 (47.4) | 1,054,087 (41.8) | 1,099,741 (36.5) | 1,144,577 (38.2) | 880,547 (36.6) | 974,374 (38.8) | 41.4 (36.5–50.8) |
West | 256,447 (13.8) | 306,441 (13.1) | 416,690 (16.5) | 471,455 (15.6) | 493,978 (16.5) | 473,180 (19.7) | 408,917 (16.3) | 15.9 (13.1–19.7) |
Unknown | 9117 (0.5) | 3606 (0.2) | 30,681 (1.2) | 94,065 (3.1) | 70,432 (2.4) | 72,205 (3.0) | 68,107 (2.7) | 1.9 (0.2–3.1) |