ILI patients examined in the present study.

<p>A. 2010–2011 influenza season (pre-IVRAT year). B. 2011–2012 influenza season (IVRAT year).</p

Antibiotics prescribed to patients discharged after ED care during the two influenza seasons.

<p>Antibiotics prescribed to patients discharged after ED care during the two influenza seasons.</p

The average length of stay and antibiotic prescription rates for patients with influenza-like illness discharged after emergency department care during the 2010–2011 and 2011–2012 influenza seasons.

<p>Abbreviations: ED, emergency department; IVRAT, influenza virus rapid antigen test; LOS, length of stay; n, number.</p><p>The average length of stay and antibiotic prescription rates for patients with influenza-like illness discharged after emergency department care during the 2010–2011 and 2011–2012 influenza seasons.</p

Perception of pandemic influenza A (H1N1) severity according to risk group (p = 0.392 by χ2 test).

<p>Perception of pandemic influenza A (H1N1) severity according to risk group (p = 0.392 by χ2 test).</p

Barriers to pandemic influenza A (H1N1) vaccination according to risk group.

<p>Barriers to pandemic influenza A (H1N1) vaccination according to risk group.</p

Rate of pandemic influenza (H1N1) vaccination coverage among all household members of the study population.

<p>95%CI, 95% confidence interval.</p

Rate of pandemic (H1N1) influenza vaccination coverage among study population according to risk group.

a<p>Cochrane-Mantel-Haenzel test.</p>b<p>Adjusted by age, sex, education level, and monthly income with logistic regression analysis.</p>c<p>Thirty-two missing values were excluded from the analysis.</p>d<p>One hundred and ninety-eight missing values were excluded from the analysis.</p>e<p>Exchange rate based on two million Korean won to US $1,830 and four million Korean won to US$3,660.</p

Rate of pandemic (H1N1) influenza vaccination coverage among study population.

a<p>χ2 test.</p>b<p>Fischer's exact test.</p>c<p>Thirty-two missing values were excluded from the analysis.</p>d<p>One hundred and ninety-eight missing values were excluded from the analysis.</p>e<p>Exchange rate based on two million Korean won to US $1,830 and four million Korean won to US$3,660.</p

Multiple logistic regression analysis on factors influencing pandemic (H1N1) influenza vaccination.

a<p>Exchange rate based on two million Korean won to US $1,830 and four million Korean won to US$3,660.</p><p>OR, odds ratio; 95% CI, 95% confidence interval.</p

Triggering events for pandemic influenza A (H1N1) vaccination according to risk group.

<p>Triggering events for pandemic influenza A (H1N1) vaccination according to risk group.</p