Table 2 Number of Index Admissions and 30-day Readmissions Stratified by Targeted and Non-targeted Condition and Age from the Nationwide Readmissions Database, 2010 to 2015a
Characteristics | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | Overall | |
|---|---|---|---|---|---|---|---|---|
Acute Myocardial Infarction | ||||||||
 All age groups | Total index admissions | 401,418 | 400,230 | 416,330 | 422,930 | 418,275 | 325,349 | 2,384,531 |
No. of 30-day readmissions | 65,559 | 63,995 | 61,912 | 60,829 | 57,802 | 44,927 | 355,025 | |
Readmission rates (%) | 16.33 | 15.99 | 14.87 | 14.38 | 13.82 | 13.81 | 14.89 | |
 18–39 years | Total index admissions | 9938 | 9939 | 9466 | 9702 | 9392 | 7599 | 56,036 |
No. of 30-day readmissions | 1029 | 1017 | 963 | 965 | 874 | 663 | 5510 | |
Readmission rates (%) | 10.35 | 10.23 | 10.17 | 9.94 | 9.31 | 8.72 | 9.83 | |
 40–64 years | Total index admissions | 170,426 | 170,271 | 175,812 | 178,108 | 177,147 | 137,486 | 1,009,250 |
No. of 30-day readmissions | 20,773 | 20,129 | 19,886 | 19,541 | 18,562 | 14,711 | 113,602 | |
Readmission rates (%) | 12.19 | 11.82 | 11.31 | 10.97 | 10.48 | 10.70 | 11.26 | |
  ≥ 65 years | Total index admissions | 221,054 | 220,020 | 231,052 | 235,120 | 231,737 | 180,263 | 1,319,246 |
No. of 30-day readmissions | 43,756 | 42,850 | 41,064 | 40,324 | 38,367 | 29,553 | 235,914 | |
Readmission rates (%) | 19.79 | 19.48 | 17.77 | 17.15 | 16.56 | 16.39 | 17.88 | |
Heart Failure | ||||||||
 All age groups | Total index admissions | 785,712 | 767,318 | 751,847 | 767,218 | 790,018 | 629,067 | 4,491,180 |
No. of 30-day readmissions | 197,339 | 191,576 | 182,318 | 179,705 | 182,500 | 145,579 | 1,079,016 | |
Readmission rates (%) | 25.12 | 24.97 | 24.25 | 23.42 | 23.10 | 23.14 | 24.03 | |
 18–39 years | Total index admissions | 18,099 | 17,510 | 17,433 | 17,841 | 18,857 | 15,176 | 104,916 |
No. of 30-day readmissions | 4667 | 4507 | 4510 | 4315 | 4960 | 3658 | 26,617 | |
Readmission rates (%) | 25.79 | 25.74 | 25.87 | 24.19 | 26.30 | 24.10 | 25.37 | |
 40–64 years | Total index admissions | 198,110 | 194,402 | 192,074 | 197,902 | 206,895 | 165,851 | 1,155,234 |
No. of 30-day readmissions | 51,284 | 49,840 | 48,277 | 48,973 | 50,389 | 40,869 | 289,632 | |
Readmission rates (%) | 25.89 | 25.64 | 25.13 | 24.75 | 24.35 | 24.64 | 25.07 | |
  ≥ 65 years | Total index admissions | 569,503 | 555,406 | 542,340 | 551,476 | 564,266 | 448,041 | 3,231,032 |
No. of 30-day readmissions | 141,389 | 137,229 | 129,530 | 126,417 | 127,150 | 101,052 | 762,767 | |
Readmission rates (%) | 24.83 | 24.71 | 23.88 | 22.92 | 22.53 | 22.55 | 23.61 | |
Pneumonia | ||||||||
 All age groups | Total index admissions | 971,287 | 1,013,665 | 991,446 | 1,026,460 | 998,629 | 809,252 | 5,810,738 |
No. of 30-day readmissions | 176,961 | 181,312 | 175,709 | 174,425 | 167,920 | 133,522 | 1,009,849 | |
Readmission rates (%) | 18.22 | 17.89 | 17.72 | 16.99 | 16.82 | 16.50 | 17.38 | |
 18–39 years | Total index admissions | 64,872 | 67,535 | 66,124 | 64,078 | 67,980 | 48,793 | 379,382 |
No. of 30-day readmissions | 8248 | 8409 | 8489 | 8360 | 8461 | 6272 | 48,239 | |
Readmission rates (%) | 12.71 | 12.45 | 12.84 | 13.05 | 12.45 | 12.85 | 12.72 | |
 40–64 years | Total index admissions | 271,022 | 284,604 | 274,966 | 282,430 | 289,602 | 217,680 | 1,620,304 |
No. of 30-day readmissions | 45,963 | 47,826 | 47,133 | 46,934 | 47,716 | 36,277 | 271,849 | |
Readmission rates (%) | 16.96 | 16.80 | 17.14 | 16.62 | 16.48 | 16.67 | 16.78 | |
  ≥ 65 years | Total index admissions | 635,392 | 661,525 | 650,355 | 679,952 | 641,047 | 542,779 | 3,811,050 |
No. of 30-day readmissions | 122,750 | 125,077 | 120,086 | 119,132 | 111,744 | 90,974 | 689,763 | |
Readmission rates (%) | 19.32 | 18.91 | 18.46 | 17.52 | 17.43 | 16.76 | 18.10 | |
Chronic Obstructive Pulmonary Disease | ||||||||
 All age groups | Total index admissions | 729,546 | 757,553 | 730,901 | 733,946 | 697,041 | 549,175 | 4,198,163 |
No. of 30-day readmissions | 159,245 | 166,954 | 156,242 | 150,882 | 145,595 | 114,457 | 893,376 | |
Readmission rates (%) | 21.83 | 22.04 | 21.38 | 20.56 | 20.89 | 20.84 | 21.28 | |
 40–64 years | Total index admissions | 283,859 | 296,422 | 291,524 | 286,029 | 282,095 | 212,126 | 1,652,055 |
No. of 30-day readmissions | 60,293 | 64,070 | 61,161 | 59,086 | 59,441 | 45,440 | 349,491 | |
Readmission rates (%) | 21.24 | 21.61 | 20.98 | 20.66 | 21.07 | 21.42 | 21.15 | |
  ≥ 65 years | Total index admissions | 445,687 | 461,131 | 439,377 | 447,918 | 414,946 | 337,049 | 2,546,108 |
No. of 30-day readmissions | 98,952 | 102,884 | 95,081 | 91,797 | 86,155 | 69,017 | 543,886 | |
Readmission rates (%) | 22.20 | 22.31 | 21.64 | 20.49 | 20.76 | 20.48 | 21.36 | |
Non-targeted Conditions | ||||||||
 All age groups | Total index admissions | 16,591,979 | 16,575,452 | 16,602,556 | 16,186,040 | 16,021,104 | 11,764,959 | 93,742,090 |
No. of 30-day readmissions | 2,247,016 | 2,252,019 | 2,228,922 | 2,142,287 | 2,128,186 | 1,566,279 | 12,564,709 | |
Readmission rates (%) | 13.54 | 13.59 | 13.43 | 13.24 | 13.28 | 13.31 | 13.40 | |
 18–39 years | Total index admissions | 4,264,477 | 4,255,748 | 4,286,288 | 4,214,362 | 4,241,154 | 3,070,183 | 24,332,212 |
No. of 30-day readmissions | 416,414 | 415,862 | 425,751 | 412,567 | 412,243 | 300,072 | 2,382,909 | |
Readmission rates (%) | 9.76 | 9.77 | 9.93 | 9.79 | 9.72 | 9.77 | 9.79 | |
 40–64 years | Total index admissions | 5,796,067 | 5,782,105 | 5,770,024 | 5,561,777 | 5481,932 | 3,987,048 | 32,378,953 |
No. of 30-day readmissions | 869,102 | 881,487 | 875,343 | 846,110 | 844,815 | 619,742 | 4,936,599 | |
Readmission rates (%) | 14.99 | 15.25 | 15.17 | 15.21 | 15.41 | 15.54 | 15.25 | |
  ≥ 65 years | Total index admissions | 6,531,435 | 6,537,600 | 6,546,243 | 6,409,902 | 6,298,017 | 4,707,728 | 37,030,925 |
No. of 30-day readmissions | 961,499 | 954,670 | 927,827 | 883,609 | 871,127 | 646,464 | 5,245,196 | |
Readmission rates (%) | 14.72 | 14.60 | 14.17 | 13.79 | 13.83 | 13.73 | 14.16 | |