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Table 4 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 hypertension?" compared to Stroke prescriptions filled 0.406 a -- 0.499 a -- 0.622 a
N (50 states plus the District of Columbia) 51 -- 51 -- 51
BRFSS Hypertension (State-Level):   --   --  
Meanb 24.32% -- 25.69% -- 25.56%
Standard Deviation 3.22% -- 2.76% -- 3.34%
Prescriptions-Filled (State-level):      
Mean 3.44% 3.61% 3.91% 4.29% 4.64%
Standard Deviations 0.69% 0.73% 0.77% 0.87% 0.96%
Ratio of Rx/BRFSS rates 0.15 -- 0.16 -- 0.19
Prescriptions-Filled (County-level):      
Mean 1.91% 2.00% 2.18% 2.41% 2.67%
Standard Deviation 1.45% 1.53% 1.66% 1.82% 1.99%
N (counties) 3,103 3,103 3,103 3,103 3,103
  1. a= Correlation is significant at the 0.01 level (2-tailed)
  2. b = Mean of the state-level rates, not a calculated national rate
  3. -- Data unavailable