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Interpretation of Historical Trends Data

Historical Trends (1975-2018)

Incidence, Connecticut, Breast (in situ), All Races (incl Hisp), All Ages, Female

Incidence, Connecticut, Breast (in situ), All Races (incl Hisp), All Ages, Female

Line graph with 44 years and 6 segments
During 1975-1983, the APC1 in the rate of cancer was rising: 5.8 with a 95% confidence interval from 1.1 to 10.7.
During 1983-1987, the APC1 in the rate of cancer was rising: 34.2 with a 95% confidence interval from 17.6 to 53.3.
During 1987-1994, the APC1 in the rate of cancer was rising: 3.2 with a 95% confidence interval from 0.1 to 6.5.
During 1994-1998, the APC1 in the rate of cancer was rising: 16.4 with a 95% confidence interval from 8.4 to 25.1.
During 1998-2009, the APC1 in the rate of cancer was rising: 1.6 with a 95% confidence interval from 0.7 to 2.4.
During 2009-2018, the APC1 in the rate of cancer was falling: -1.9 with a 95% confidence interval from -2.9 to -0.9.
Yearly points:
In 1975, the observed rate was 4.2. The estimated rate was 3.4.
In 1976, the observed rate was 3.5. The estimated rate was 3.6.
In 1977, the observed rate was 3.9. The estimated rate was 3.9.
In 1978, the observed rate was 3.3. The estimated rate was 4.1.
In 1979, the observed rate was 4.2. The estimated rate was 4.3.
In 1980, the observed rate was 4.1. The estimated rate was 4.6.
In 1981, the observed rate was 4.3. The estimated rate was 4.8.
In 1982, the observed rate was 5.8. The estimated rate was 5.1.
In 1983, the observed rate was 5.3. The estimated rate was 5.4.
In 1984, the observed rate was 8.2. The estimated rate was 7.3.
In 1985, the observed rate was 9.3. The estimated rate was 9.7.
In 1986, the observed rate was 12.8. The estimated rate was 13.1.
In 1987, the observed rate was 17.5. The estimated rate was 17.6.
In 1988, the observed rate was 18.0. The estimated rate was 18.1.
In 1989, the observed rate was 17.2. The estimated rate was 18.7.
In 1990, the observed rate was 21.7. The estimated rate was 19.3.
In 1991, the observed rate was 19.1. The estimated rate was 19.9.
In 1992, the observed rate was 21.7. The estimated rate was 20.6.
In 1993, the observed rate was 20.4. The estimated rate was 21.2.
In 1994, the observed rate was 22.4. The estimated rate was 21.9.
In 1995, the observed rate was 25.7. The estimated rate was 25.5.
In 1996, the observed rate was 28.4. The estimated rate was 29.7.
In 1997, the observed rate was 33.5. The estimated rate was 34.6.
In 1998, the observed rate was 40.5. The estimated rate was 40.3.
In 1999, the observed rate was 39.3. The estimated rate was 40.9.
In 2000, the observed rate was 44.9. The estimated rate was 41.6.
In 2001, the observed rate was 43.2. The estimated rate was 42.2.
In 2002, the observed rate was 43.1. The estimated rate was 42.9.
In 2003, the observed rate was 43.2. The estimated rate was 43.5.
In 2004, the observed rate was 42.6. The estimated rate was 44.2.
In 2005, the observed rate was 45.4. The estimated rate was 44.9.
In 2006, the observed rate was 44.1. The estimated rate was 45.6.
In 2007, the observed rate was 46.2. The estimated rate was 46.3.
In 2008, the observed rate was 48.3. The estimated rate was 47.1.
In 2009, the observed rate was 49.7. The estimated rate was 47.8.
In 2010, the observed rate was 45.2. The estimated rate was 46.9.
In 2011, the observed rate was 43.7. The estimated rate was 46.0.
In 2012, the observed rate was 45.0. The estimated rate was 45.1.
In 2013, the observed rate was 45.6. The estimated rate was 44.3.
In 2014, the observed rate was 43.2. The estimated rate was 43.4.
In 2015, the observed rate was 43.2. The estimated rate was 42.6.
In 2016, the observed rate was 43.4. The estimated rate was 41.8.
In 2017, the observed rate was 41.9. The estimated rate was 41.0.
In 2018, the observed rate was 38.0. The estimated rate was 40.2.

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