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Table 3 Results from Joinpoint regressions for invasive and in situ breast cancer among non-Hispanic white women aged 50 to 74 years by county rural/urban and poverty status, 1997 to 2004 (NAACCR, CINA Deluxe).

From: Recent trends in breast cancer incidence in US white women by county-level urban/rural and poverty status

  Trend time period Quarterly % change 95% CI
Invasive    
Overall Q1 1997 to Q2 1998 +1.2 +0.04 to +2.4
  Q2 1998 to Q2 2002 -0.2 -0.4 to +0.1
  Q2 2002 to Q1 2003 -3.6 -8.5 to +1.6
  Q1 2003 to Q4 2004 -0.4 -1.1 to +0.4
   Rural/urban status    
Urban Q1 1997 to Q2 1998 +1.2 +0.04 to +2.4
  Q2 1998 to Q2 2002 -0.2 -0.2 to +0.1
  Q2 2002 to Q1 2003 -3.9% -9.1 to +1.6
  Q1 2003 to Q4 2004 -0.4 -1.1 to +0.4
Suburban Q1 1997 to Q1 2000 +0.6 -0.02 to +1.2
  Q1 2000 to Q4 2004 -0.8 -1.1 to -0.5
Rural Q1 1997 to Q4 1999 +0.7 -0.1 to +1.5
  Q1 1999 to Q4 2004 -0.8 -1.1 to -0.5
   County Poverty Level    
Low-poverty counties (<10% below FPL) Q1 1997 to Q2 1998 +1.5 -0.2 to +3.2
  Q2 1998 to Q1 2003 -0.3 -0.6 to +0.1
  Q2 2002 to Q1 2003 -3.6 -10.2 to +3.3
  Q1 2003 to Q4 2004 -0.3 -1.2 to +0.8
Middle-poverty counties (10 to 19.9% below FPL) Q1 1997 to Q1 1999 +0.6 +0.1 to +1.2
  Q1 1999 to Q2 2002 -0.2 -0.5 to +0.1
  Q2 2002 to Q1 2003 -3.8 -8.8 to +1.5
  Q1 2003 to Q4 2004 -0.4 -1.1 to +0.3
High-poverty counties (20+% below FPL) Q1 1997 to Q2 1998 +1.5 -0.7 to +3.7
  Q2 1998 to Q4 2004 -0.7 -0.9 to -0.5
In situ    
   Overall Q1 1997 to Q2 1999 +2.5 +1.8 to +3.1
  Q2 1999 to Q4 2001 +0.4 -0.2 to +1.1
  Q4 2001 to Q4 2004 -0.6 -1.0 to -0.2
   Rural/urban status    
Urban Q1 1997 to Q2 1999 +2.3 +1.5 to +3.1
  Q2 1999 to Q4 2001 +0.4 -0.2 to +1.1
  Q4 2001 to Q4 2004 -0.7 1.1 to -0.3
Suburban Q1 1997 to Q3 1999 +3.6 +2.0 to +5.2
  Q3 1999 to Q4 2004 -0.01 -0.4 to +0.4
Rural Q1 1997 to Q2 2000 +2.8 +1.0 to +4.6
  Q2 2000 to Q4 2004 -0.1 -1.0 to +0.8
   County poverty level    
Low-poverty counties (<10% below FPL) Q1 1997 to Q2 1998 +3.2 +2.0% to +4.5
  Q2 1998 to Q1 2002 +0.4 -0.04 to +0.8
  Q1 2002 to Q1 2004 -1.0 -1.9 to -0.2
  Q1 2004 to Q4 2004 +5.0 -2.5 to +13.2
Middle-poverty counties (10 to 19.9% below FPL) Q1 1997 to Q1 2000 +2.1 +1.6 to +2.7
  Q1 2000 to Q4 2004 -0.0.3 -0.6 to -0.3
High-poverty counties (20+% below FPL) Q1 1997 to Q4 1998 +4.9 +0.9 to +9.1
  Q4 1998 to Q4 2004 -0.04 -0.6 to +0.5
  1. CI = confidence interval; FPL = federal poverty level; Q = quarter