Table 1.
Malpractice claims database presented by the month of occurrence; total number of claims (used to estimate the number of IBNR claims); number of proper claims; IBNR factor (obtained by the successive multiplication of the progression index); estimated number of IBNR claims (the proper claim number multiplied by the IBNR factor); sum of proper claims and IBNR claims.
| Month of Occurrence | Number of Claims | Number of Proper Claims | IBNR Factor | Number of IBNR Claims Rounded to Units | Number of Proper Claims + IBNR Claims |
|---|---|---|---|---|---|
| 201401 | 18 | 7 | 0 | 0 | 7 |
| 201402 | 12 | 6 | 0 | 0 | 6 |
| 201403 | 18 | 8 | 0 | 0 | 8 |
| 201404 | 12 | 6 | 0 | 0 | 6 |
| 201405 | 12 | 5 | 0 | 0 | 5 |
| 201406 | 16 | 10 | 0 | 0 | 10 |
| 201407 | 11 | 4 | 0 | 0 | 4 |
| 201408 | 11 | 4 | 0 | 0 | 4 |
| 201409 | 11 | 8 | 0 | 0 | 8 |
| 201410 | 14 | 7 | 0 | 0 | 7 |
| 201411 | 17 | 6 | 0 | 0 | 6 |
| 201412 | 11 | 4 | 0 | 0 | 4 |
| 201501 | 14 | 7 | 0 | 0 | 7 |
| 201502 | 10 | 4 | 0 | 0 | 4 |
| 201503 | 7 | 4 | 0 | 0 | 4 |
| 201504 | 17 | 7 | 0 | 0 | 7 |
| 201505 | 9 | 3 | 0 | 0 | 3 |
| 201506 | 14 | 5 | 0.00457 | 0 | 5 |
| 201507 | 14 | 9 | 0.00457 | 0 | 9 |
| 201508 | 12 | 5 | 0.00457 | 0 | 5 |
| 201509 | 12 | 6 | 0.00457 | 0 | 6 |
| 201510 | 3 | 0 | 0.00457 | 0 | 0 |
| 201511 | 12 | 6 | 0.00457 | 0 | 6 |
| 201512 | 13 | 6 | 0.00457 | 0 | 6 |
| 201601 | 15 | 8 | 0.00457 | 0 | 8 |
| 201602 | 17 | 14 | 0.00457 | 0 | 14 |
| 201603 | 11 | 6 | 0.00761 | 0 | 6 |
| 201604 | 11 | 5 | 0.01057 | 0 | 5 |
| 201605 | 14 | 6 | 0.01057 | 0 | 6 |
| 201606 | 10 | 3 | 0.01335 | 0 | 3 |
| 201607 | 13 | 7 | 0.01607 | 0 | 7 |
| 201608 | 8 | 3 | 0.01607 | 0 | 3 |
| 201609 | 9 | 7 | 0.01865 | 0 | 7 |
| 201610 | 4 | 3 | 0.01865 | 0 | 3 |
| 201611 | 7 | 5 | 0.02117 | 0 | 5 |
| 201612 | 11 | 3 | 0.02117 | 0 | 3 |
| 201701 | 10 | 7 | 0.02359 | 0 | 7 |
| 201702 | 10 | 8 | 0.02359 | 0 | 8 |
| 201703 | 10 | 6 | 0.02591 | 0 | 6 |
| 201704 | 9 | 4 | 0.05636 | 0 | 4 |
| 201705 | 13 | 6 | 0.09051 | 1 | 7 |
| 201706 | 8 | 7 | 0.09542 | 1 | 8 |
| 201707 | 9 | 4 | 0.10274 | 0 | 4 |
| 201708 | 3 | 1 | 0.11246 | 0 | 1 |
| 201709 | 8 | 7 | 0.11735 | 1 | 8 |
| 201710 | 4 | 2 | 0.12464 | 0 | 2 |
| 201711 | 7 | 3 | 0.13442 | 0 | 3 |
| 201712 | 7 | 6 | 0.14175 | 1 | 7 |
| 201801 | 10 | 2 | 0.154 | 0 | 2 |
| 201802 | 8 | 6 | 0.16378 | 1 | 7 |
| 201803 | 13 | 11 | 0.16378 | 2 | 13 |
| 201804 | 10 | 4 | 0.1733 | 1 | 5 |
| 201805 | 10 | 7 | 0.17802 | 1 | 8 |
| 201806 | 8 | 6 | 0.18976 | 1 | 7 |
| 201807 | 12 | 10 | 0.20392 | 2 | 12 |
| 201808 | 5 | 3 | 0.2086 | 1 | 4 |
| 201809 | 8 | 5 | 0.21328 | 1 | 6 |
| 201810 | 9 | 7 | 0.22259 | 2 | 9 |
| 201811 | 12 | 11 | 0.22955 | 3 | 14 |
| 201812 | 6 | 5 | 0.24107 | 1 | 6 |
| 201901 | 11 | 7 | 0.24337 | 2 | 9 |
| 201902 | 11 | 6 | 0.24791 | 1 | 7 |
| 201903 | 12 | 8 | 0.26145 | 2 | 10 |
| 201904 | 8 | 5 | 0.27727 | 1 | 6 |
| 201905 | 6 | 3 | 0.27953 | 1 | 4 |
| 201906 | 8 | 4 | 0.29312 | 1 | 5 |
| 201907 | 5 | 5 | 0.30911 | 2 | 7 |
| 201908 | 5 | 4 | 0.33722 | 1 | 5 |
| 201909 | 6 | 5 | 0.35646 | 2 | 7 |
| 201910 | 9 | 8 | 0.36374 | 3 | 11 |
| 201911 | 5 | 3 | 0.37341 | 1 | 4 |
| 201912 | 5 | 5 | 0.38804 | 2 | 7 |
| 202001 | 7 | 6 | 0.39789 | 2 | 8 |
| 202002 | 8 | 6 | 0.41775 | 3 | 9 |
| 202003 | 4 | 3 | 0.43535 | 1 | 4 |
| 202004 | 7 | 3 | 0.46897 | 1 | 4 |
| 202005 | 4 | 2 | 0.49018 | 1 | 3 |
| 202006 | 7 | 4 | 0.51737 | 2 | 6 |
| 202007 | 5 | 4 | 0.54522 | 2 | 6 |
| 202008 | 3 | 3 | 0.58854 | 2 | 5 |
| 202009 | 9 | 7 | 0.62478 | 4 | 11 |
| 202010 | 10 | 6 | 0.65889 | 4 | 10 |
| 202011 | 6 | 3 | 0.72344 | 2 | 5 |
| 202012 | 9 | 6 | 0.80319 | 5 | 11 |
| 202101 | 5 | 3 | 0.86588 | 3 | 6 |
| 202102 | 5 | 3 | 0.957 | 3 | 6 |
| 202103 | 5 | 2 | 1.05183 | 2 | 4 |
| 202104 | 3 | 3 | 1.17503 | 4 | 7 |
| 202105 | 7 | 6 | 1.30173 | 8 | 14 |
| 202106 | 1 | 0 | 1.44159 | 0 | 0 |
| 202107 | 2 | 0 | 1.59911 | 0 | 0 |
| 202108 | 3 | 1 | 1.80944 | 2 | 3 |
| 202109 | 1 | 1 | 2.00765 | 2 | 3 |
| 202110 | 0 | 0 | 2.24588 | 0 | 0 |
| 202111 | 1 | 1 | 2.58942 | 3 | 4 |
| 202112 | 1 | 0 | 3.14744 | 0 | 0 |