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Table 3 Correlations of State-level BRFSS to State-level Rx

From: Correlating pharmaceutical data with a national health survey as a proxy for estimating rural population health

  1999 2000 2001 2002 2003
BRFSS Q: "Have you ever been told by a doctor that you have coronary heart disease?" compared to heart disease prescriptions filled 0.438 a -- 0.662 a -- 0.613 a
N (states) 21 14 20 7 24
BRFSS Heart Disease (State-level):      
Meanb 4.27% -- 4.47% -- 4.48%
Standard Deviation 0.90% -- 1.08% -- 1.39%
Prescriptions-Filled (State-level):      
Mean 15.19% 16.04% 16.99% 18.02% 18.74%
Standard Deviations 3.44% 3.57% 3.64% 3.83% 3.96%
Ratio of Rx/BRFSS rates 1.60 -- 1.57 -- 2.25
Prescriptions-Filled (County-level):      
Mean 9.41% 10.01% 10.60% 11.28% 11.85%
Standard Deviation 5.92% 6.33% 6.64% 7.05% 7.32%
N (counties) 3,103 3,103 3,103 3,103 3,103
  1. Note: Correlations with populations of less than 30 are unstable and should be viewed with caution.
  2. a= Correlation is significant at the 0.01 level (2-tailed)
  3. b = Caution: Mean of the state-level rates, not a calculated national rate
  4. -- Data unavailable