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Table 4 Results of Poisson regression examining stratum-specific differences in frequency of correct answers to pre/post knowledge surveys among health care providers by sex, age group and educational level

From: Hepatitis B knowledge among key stakeholders in Haimen City, China: Implications for addressing chronic HBV infection

Percent Correct by Group       Univariate After Controlling for Pre/post Survey
  Pre-test (N = 710) (n) Post-test (N = 680) (n) Change p-value
Total 67.3 % 710 85.9 % 680 +18.6 % <0.0001  
Gender
 Male 68.1 % 362 85.6 % 349 +17.4 % <0.0001 0.24
 Female 66.4 % 348 86.3 % 331 +19.9 % <0.001  
Age Group
  < 35 66.9 % 117 87.6 % 107 +20.7 % <0.001 0.13
 35–39 61.4 % 144 85.3 % 131 +23.9 % <0.001  
 40–44 66.2 % 124 86.2 % 120 +20.0 % <0.001  
 45–49 68.6 % 66 87.3 % 63 +18.7 % <0.01  
 50–54 71.0 % 63 85.7 % 63 +14.7 % 0.05  
 55–59 71.6 % 16 85.7 % 76 +14.1 % 0.03  
 60–64 71.3 % 81 85.5 % 81 +14.3 % 0.03  
  ≥ 65 68.1 % 39 81.7 % 39 +13.6 % 0.17  
Educational Level
  ≤ High School 70.5 % 213 84.9 % 213 +14.4 % <.001 0.05
 Jr/Tech Coll 65.1 % 429 85.9 % 408 +20.8 % <.0001  
  ≥ College 71.0 % 68 89.3 % 59 +18.3 % 0.06