Predictive Equations Using Regression Analysis for the Developed and other Reference Equations Based on the Training Subset.

<p>Predictive Equations Using Regression Analysis for the Developed and other Reference Equations Based on the Training Subset.</p

Pearson's correlation coefficients between spirometric parameters and height, weight, age in the training subset^*.

*<p><i>P</i><0.001 for all correlation coefficients. FVC, forced vital capacity; FEV1, forced expiratory volume in one second; PEF, peak expiratory flow; MMEF, maximal mid-expiratory flow.</p

Difference Between Measured and Predicted Values Based on the Validation Subset.

*<p>Data are presented as mean of difference (predicted-measured) ±95% CI (confidence interval) of difference, and <i>P</i> value.</p

Correlation coefficients of air pollutants across 25 districts.

<p>Abbreviations: PM₁₀, particles with aerodynamic diameter 10 µm or less; SO₂, sulfur dioxide; NO₂, nitrogen dioxide; CO, carbon monoxide; O₃, ozone.</p><p>*<i>p</i><0.05.</p

Adjusted OR and 95% CIs of respiratory diseases with respect to ambient air pollutants (2006–2008) among children with allergic predisposition (n = 4135)^†.

†<p>Models were adjusted for the variables with asterisks in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0022470#pone-0022470-t004" target="_blank">table 4</a>.</p>‡<p>OR were scaled to the interquartile range for each pollutant (31 µg/m³ for PM₁₀, 21 µg/m³ for SO₂, 10 µg/m³ for NO₂, 1001 µg/m³ for CO, and 23 µg/m³ for O₃).</p

The frequency and percentage for age stratified by gender.

<p>The frequency and percentage for age stratified by gender.</p

Adjusted odds ratios (OR) for personal and household covariates associated with respiratory morbidity.

<p>*<i>p</i><0.15;</p><p>**<i>p</i><0.05.</p><p>Items with asterisks are included in the final adjustment model for this measurement. These items are adjusted for each other; remaining variables are adjusted only for the footnoted items, as well as for districts.</p

Adjusted OR and 95% CIs of respiratory diseases with respect to ambient air pollutants (2006–2008) among children without allergic predisposition (n = 26004)^†.

†<p>Models were adjusted for the variables with asterisks in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0022470#pone-0022470-t004" target="_blank">table 4</a>.</p>‡<p>OR were scaled to the interquartile range for each pollutant (31 µg/m³ for PM₁₀, 21 µg/m³ for SO₂, 10 µg/m³ for NO₂, 1001 µg/m³ for CO, and 23 µg/m³ for O₃).</p