†<p>Chi 2, p-value<0.20, included in the final logistic regression model.</p>††<p>Fischer exact Test.</p><p>*1 missing value.</p><p>**2 missing values.</p
†<p>Data of vaccination status were available in only 1323 out of 1417 patients.</p>‡<p>Not applicab...
a<p>Upper respiratory tract infections/Lower respiratory tract infections;</p>b<p>Numbers in parenth...
a<p>χ2 test.</p>b<p>Fischer's exact test.</p>c<p>Thirty-two missing values were excluded from the an...
<p>CI, Confidence interval.</p>†<p>Indicates the variable was not entered in logistic regression ana...
<p>* P-value from Chi-square test does not include missing category</p><p>Univariate characteristics...
<p>ILI: influenza-like illness.</p><p>CI: confidence interval.</p>a<p>Three contacts were excluded d...
<p>Unadjusted odds ratio for agriculture workers against control enrollees with binary logistic regr...
†<p>Indicates that the variable was not entered in logistic regression analysis as it was not signif...
<p>Logistic regression analysis of factors associated with 2009 H1N1 seroprevalence among the non-va...
*<p>N = 814 (one record with missing information).</p>‡<p>Two-sided Fisher’s exact test.</p
*<p>P<0.05, <sup>**</sup>P<0.01, <sup>***</sup>P<0.001</p>a<p>No formal statistical test was conduct...
a<p>Patients presenting with influenza-like illness (ILI), A(H1N1)pdm2009 influenza virus not detect...
a<p>Multiple imputation was used to adjust for a small amount of missing data on some characteristic...
<p>The baseline samples are less than validation samples because of missing baselines measures. For ...
<p>The weekly number of influenza tests not confirmed positive for influenza was modelled as a funct...
†<p>Data of vaccination status were available in only 1323 out of 1417 patients.</p>‡<p>Not applicab...
a<p>Upper respiratory tract infections/Lower respiratory tract infections;</p>b<p>Numbers in parenth...
a<p>χ2 test.</p>b<p>Fischer's exact test.</p>c<p>Thirty-two missing values were excluded from the an...
<p>CI, Confidence interval.</p>†<p>Indicates the variable was not entered in logistic regression ana...
<p>* P-value from Chi-square test does not include missing category</p><p>Univariate characteristics...
<p>ILI: influenza-like illness.</p><p>CI: confidence interval.</p>a<p>Three contacts were excluded d...
<p>Unadjusted odds ratio for agriculture workers against control enrollees with binary logistic regr...
†<p>Indicates that the variable was not entered in logistic regression analysis as it was not signif...
<p>Logistic regression analysis of factors associated with 2009 H1N1 seroprevalence among the non-va...
*<p>N = 814 (one record with missing information).</p>‡<p>Two-sided Fisher’s exact test.</p
*<p>P<0.05, <sup>**</sup>P<0.01, <sup>***</sup>P<0.001</p>a<p>No formal statistical test was conduct...
a<p>Patients presenting with influenza-like illness (ILI), A(H1N1)pdm2009 influenza virus not detect...
a<p>Multiple imputation was used to adjust for a small amount of missing data on some characteristic...
<p>The baseline samples are less than validation samples because of missing baselines measures. For ...
<p>The weekly number of influenza tests not confirmed positive for influenza was modelled as a funct...
†<p>Data of vaccination status were available in only 1323 out of 1417 patients.</p>‡<p>Not applicab...
a<p>Upper respiratory tract infections/Lower respiratory tract infections;</p>b<p>Numbers in parenth...
a<p>χ2 test.</p>b<p>Fischer's exact test.</p>c<p>Thirty-two missing values were excluded from the an...