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Table 9 Trends in improbable patterns in diagnosis between initial (T1) and follow-up (T2) assessments, by facility type (CCC and LTC), Ontario

From: An evaluation of data quality in Canada’s Continuing Care Reporting System (CCRS): secondary analyses of Ontario data submitted between 1996 and 2011

  Multiple sclerosis recorded at T1 but not at T2 Quadriplegia recorded at T1 but not at T2 Cerebral palsy recorded at T1 but not at T2 Schizophrenia recorded at T1 but not at T2 Number of assessments
Quarter CCC LTC CCC LTC CCC LTC CCC LTC CCC LTC
1996_3 5.5%   17.5%   14.9%     3,853 NA
1996_4 4.2%   19.2%   16.0%     3,600 NA
1997_1 9.2%   20.6%   9.4%     3,213 NA
1997_2 5.0%   24.4%   8.6%     3,184 NA
1997_3 6.4%   21.0%   14.7%     3,331 NA
1997_4 5.0%   19.8%   23.0%     3,329 NA
1998_2 4.9%   18.2%   17.2%     3,292 NA
1998_3 5.1%   13.0%   9.5%     3,290 NA
1998_4 8.2%   21.7%   19.1%     3,259 NA
1999_1 3.1%   17.1%   19.4%     3,131 NA
1999_2 4.0%   12.2%   8.2%     3,172 NA
1999_3 5.6%   13.3%   13.6%     3,242 NA
1999_4 6.5%   20.9%   16.9%     3,138 NA
2000_1 7.5%   18.1%   11.7%     3,104 NA
2000_2 4.5%   17.5%   17.7%     3,080 NA
2000_3 4.0%   18.5%   15.2%     3,133 NA
2000_4 6.3%   15.6%   15.4%     2,961 NA
2001_1 3.7%   16.1%   11.1%     2,915 NA
2001_2 5.1%   11.3%   11.6%     2,965 NA
2001_3 4.2%   12.3%   9.5%     3,059 NA
2001_4 5.5%   19.1%   10.3%     3,103 NA
2002_1 6.0%   13.9%   3.8%     3,168 NA
2002_2 3.5%   10.7%   10.3%     3,030 NA
2002_3 4.4%   14.9%   14.5%     3,041 NA
2002_4 5.5%   13.3%   15.2%     3,042 NA
2003_1 5.8%   8.4%   14.7%     2,931 NA
2003_2 3.3%   19.7%   11.3%   38.1%   2,808 NA
2003_3 4.2%   9.0%   13.3%   16.7%   2,726 NA
2003_4 2.5%   10.9%   11.1%   10.3%   2,720 NA
2004_1 2.4%   12.3%   16.4%   7.2%   2,715 NA
2004_2 1.5%   8.9%   4.7%   5.4%   2,722 NA
2004_3 0.5%   11.7%   4.8%   2.9%   2,738 NA
2004_4 2.1%   4.4%   9.1%   1.4%   2,657 NA
2005_1 0.0%   7.0%   1.8%   6.8%   2,631 NA
2005_2 1.1%   7.7%   8.3%   10.8%   2,552 NA
2005_3 1.1%   6.3%   3.6%   7.0%   2,503 NA
2005_4 2.4% 33.3% 5.3% 0.0% 5.6% 16.7% 11.5% 22.2% 2,500 880
2006_1 0.6% 0.0% 4.0% 0.0% 7.8% 11.1% 3.6% 4.3% 2,461 1,941
2006_2 2.6% 0.0% 2.2% 20.0% 7.1% 5.9% 5.8% 8.0% 2,478 1,960
2006_3 2.5% 5.0% 8.5% 5.6% 5.3% 5.7% 3.9% 4.2% 2,541 4,209
2006_4 1.8% 4.1% 5.1% 0.0% 0.0% 5.6% 3.2% 4.1% 2,516 9,708
2007_1 1.8% 1.0% 4.9% 2.1% 13.3% 5.3% 3.6% 1.8% 2,480 9,699
2007_2 0.0% 0.9% 2.9% 7.3% 0.0% 4.4% 0.0% 3.0% 2,457 9,732
2007_3 2.7% 4.3% 4.2% 6.0% 2.1% 4.1% 4.7% 4.2% 2,483 10,262
2007_4 0.7% 2.5% 3.9% 16.1% 0.0% 11.1% 3.1% 1.7% 2,500 12,887
2008_1 1.4% 1.7% 3.9% 5.5% 0.0% 6.1% 8.8% 4.2% 2,479 15,044
2008_2 1.5% 3.4% 5.0% 7.3% 6.4% 5.3% 3.1% 2.3% 2,404 15,056
2008_3 2.1% 2.1% 1.8% 3.3% 4.3% 3.6% 1.4% 3.0% 2,469 19,116
2008_4 0.0% 5.5% 4.5% 6.3% 0.0% 4.3% 5.7% 3.6% 2,424 20,291
2009_1 1.4% 1.6% 2.8% 10.2% 2.2% 1.8% 3.1% 4.2% 2,394 20,075
2009_2 1.5% 1.2% 5.0% 18.0% 2.3% 4.3% 6.8% 3.5% 2,302 19,721
2009_3 0.0% 1.6% 3.3% 8.1% 7.3% 3.8% 5.3% 2.5% 2,282 26,965
2009_4 2.5% 3.3% 5.4% 16.0% 2.6% 4.0% 4.5% 3.0% 2,288 42,271
2010_1 3.4% 1.6% 3.9% 20.1% 7.0% 4.5% 7.6% 3.1% 2,237 51,059
2010_2 2.6% 1.6% 5.1% 13.8% 2.6% 5.6% 6.0% 3.0% 2,250 52,614
2010_3 3.9% 1.4% 7.6% 10.3% 4.9% 3.6% 3.1% 2.8% 2,243 52,750
2010_4 1.0% 1.8% 6.6% 6.8% 5.6% 3.6% 7.7% 2.8% 2,105 52,064
2011_1 0.0% 2.2% 3.5% 7.8% 0.0% 2.7% 6.5% 2.2% 2,021 51,771
Intercept 6.3% 8.0% 20.6% 3.9% 16.8% 9.3% 11.7% 7.9%
Slope -0.10% -0.38% -0.33% 0.41% -0.26% -0.32% -0.28% -0.31%
     Total number of consecutive assessment pairs: 161,652 500,075