Age-specific laboratory positivity rates for influenza during the 2009 pandemic and the 2010–2011 influenza season reported by the DataMart laboratory surveillance system, England.

<p>Age-specific laboratory positivity rates for influenza during the 2009 pandemic and the 2010–2011 influenza season reported by the DataMart laboratory surveillance system, England.</p

Number of hospitalised cases by age group and by week of admission: week 40 2010–week 6 2011, USISS sentinel network (n = 23), England.

<p>Number of hospitalised cases by age group and by week of admission: week 40 2010–week 6 2011, USISS sentinel network (n = 23), England.</p

Influenza hospitalisations and hospitalisation rates during the 2009 pandemic and during the 2010–11 influenza season, and influenza A/H1N1 (2009) rate ratio of hospitalisation during the 2010–2011 influenza season compared to the 2009 pandemic, USISS sentinel network (n = 19).

<p>Influenza hospitalisations and hospitalisation rates during the 2009 pandemic and during the 2010–11 influenza season, and influenza A/H1N1 (2009) rate ratio of hospitalisation during the 2010–2011 influenza season compared to the 2009 pandemic, USISS sentinel network (n = 19).</p

Number of hospitalised cases of influenza by type and by week of admission with weekly Royal College of General Practitioners (RCGP) influenza-like illness (ILI) consultation rate per 100 000 population: week 40 2010–week 6 2011, USISS sentinel network (n = 23), England.

<p>Number of hospitalised cases of influenza by type and by week of admission with weekly Royal College of General Practitioners (RCGP) influenza-like illness (ILI) consultation rate per 100 000 population: week 40 2010–week 6 2011, USISS sentinel network (n = 23), England.</p

Distribution of CATs, CURB-65 and PMEWS scores according to outcome measures (Level 2/3 admission, mortality, combined measure of severe outcomes) in children (<16 years).

*<p>Combined measure of severe outcomes (Level 2/3 admission or death).</p

Multivariable analyses of CAT criteria as independent predictors of outcomes in children (<16 years), forward stepwise regression.

<p>Values are adjusted odds ratios (95% confidence intervals), significant values in bold and p values in italic. Each predictor variable (CAT criterion) in model adjusted for other criteria in the multivariable model remaining following forward stepwise regression (significance level for addition to the model p≤0.05); * criteria excluded from the final model. X Not calculated as this criterion typically directs the outcome (use of supplemental oxygen).</p

Predictive values of CATs, CURB-65 and PMEWS scores for predicting severe outcomes in adults (≥16 years, n = 1040).

*<p>Combined measure of severe outcomes (Level 2/3 admission or death).</p

Multivariable analyses of CAT criteria as independent predictors of outcomes in adults (≥16 years), forward stepwise regression.

<p>Values are adjusted odds ratios (95% confidence intervals), significant values in bold and p values in italic. Each predictor variable (CAT criterion) in model adjusted for other criteria in the multivariable model remaining following forward stepwise regression (significance level for addition to the model p≤0.05); X Not calculated as this criterion typically directs the outcome (use of supplemental oxygen).</p

Distribution of CATs, CURB-65 and PMEWS scores according to outcome measures (Level 2/3 admission, mortality, combined measure of severe outcomes) in adults (≥16 years).

*<p>Combined measure of severe outcomes (Level 2/3 admission or death).</p

Predictive values of CATs, CURB-65 and PMEWS scores for predicting severe outcomes in children (<16 years, n = 480).

*<p>Combined measure of severe outcomes (Level 2/3 admission or death).</p