Table 5 The proportions of misclassified between observed incident cases and estimated incident cases
From: The effect of the look-back period for estimating incidence using administrative data
Incidence | Look-back period (years) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
2003 (1) | 2004 (2) | 2005 (3) | 2006 (4) | 2007 (5) | 2008 (6) | 2009 (7) | 2010 (8) | 2011 (9) | 2012 (10) | 2013 (11) | |
Uterine leiomyoma | |||||||||||
Observed (n) | 3117 | 3193 | 3332 | 3196 | 3368 | 3287 | 3234 | 3476 | 3615 | 3787 | 3826 |
Estimated (n) | 2094 | 2353 | 2597 | 2697 | 2877 | 2822 | 3008 | 3198 | 3297 | 3576 | 3584 |
Proportions of misclassified (%) | 32.8 | 26.3 | 22.1 | 15.6 | 14.6 | 14.1 | 7.0 | 8.0 | 8.8 | 5.6 | 6.3 |
Adenomyosis | |||||||||||
Observed | 596 | 565 | 709 | 662 | 707 | 770 | 843 | 920 | 1060 | 1036 | 1029 |
Estimated | 534 | 518 | 658 | 619 | 674 | 712 | 815 | 917 | 1010 | 1018 | 1037 |
Proportions of misclassified (%) | 10.4 | 8.3 | 7.2 | 6.5 | 4.7 | 7.5 | 3.3 | 0.3 | 4.7 | 1.7 | −0.8 |
Endometriosis | |||||||||||
Observed | 623 | 606 | 589 | 568 | 463 | 466 | 536 | 538 | 515 | 515 | 489 |
Estimated | 538 | 536 | 538 | 525 | 466 | 445 | 498 | 543 | 526 | 500 | 493 |
Proportions of misclassified (%) | 13.6 | 11.6 | 8.7 | 7.6 | −0.6 | 4.5 | 7.1 | −0.9 | −2.1 | 2.9 | −0.8 |