# Dietary Factors Affecting Asthma Outcomes among Asthmatic Children in California
## 2 Materials and Methods
### Statistical Analysis
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multicolumn{1}{c}{**Food/**} & \multicolumn{2}{c}{**Had Asthma Attack**} & \multicolumn{4}{c}{**Symptom Frequency (\%)**} & \multicolumn{4}{c}{**Currently Taking Prescription**} \\ \multicolumn{1}{c}{**Food Item**} & \multicolumn{2}{c}{**in 12 Months (\%)**} & \multicolumn{2}{c}{**Less than Monthly**} & \multicolumn{2}{c}{**Monthly or More**} & \multicolumn{1}{c}{**\(p\)-Value**} & \multicolumn{1}{c}{**Yes**} & \multicolumn{1}{c}{**No**} & \multicolumn{1}{c}{**\(p\)-Value**} \\ \hline High sugar, svg/d & \(n=1024\) & 0.335 & \(n=3422\) & 0.297 & \(n=1929\) & 0.586 \\
0 & 66.6 & 33.4 & 32.0 & 68.0 & 59.8 & 40.2 & \\
1 & 68.2 & 31.8 & 28.2 & 71.8 & 56.3 & 43.7 & \\
2 or more & 75.8 & 24.2 & 32.1 & 67.9 & 55.6 & 44.4 & \\ \hline Soda, svg/d & \(n=2776\) & 0.465 & \(n=5174\) & 0.743 & \(n=2839\) & 0.069 \\
0 & 73.3 & 26.7 & 30.4 & 69.6 & 62.2 & 37.9 & \\
1 & 71.6 & 28.4 & 28.3 & 71.8 & 52.6 & 47.4 & \\
2 or more & 64.1 & 36.0 & 31.5 & 68.5 & 53.3 & 46.7 & \\ \hline French fries, svg/d & \(n=1963\) & 0.143 & \(n=4361\) & 0.948 & \(n=2026\) & 0.914 \\
0 & 74.2 & 25.8 & 31.2 & 68.8 & 60.0 & 40.0 & \\
1 or more & 66.1 & 33.9 & 30.9 & 69.1 & 59.6 & 40.5 & \\ \hline Fast food & \(n=2776\) & 0.084 & \(n=3945\) & 0.185 & \(n=910\) & 0.269 \\
0 & 78.6 & 21.4 & 25.4 & 74.6 & 69.9 & 30.1 & \\
1 & 73.9 & 26.1 & 27.5 & 72.6 & 61.4 & 38.6 & \\
2 or more & 68.2 & 31.8 & 32.3 & 67.7 & 56.6 & 43.4 & \\ \hline \hline \end{tabular}  
* Not every diet or outcome question was asked every survey year; svg/d = servings per day; svg/w = servings per week; ND = no data. We bolded the statistically significant results.  
\end{table} 
Table 2: _Cont._  
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multicolumn{1}{c}{**Symptoms Frequency**} & \multicolumn{4}{c}{**Currently Taking**} & \multicolumn{4}{c}{**Low Self-Efficacy to**} & \multicolumn{4}{c}{**Any ED Visits**} & \multicolumn{2}{c}{**Any Missed School**} \\ \multicolumn{1}{c}{**(\(n=3655\))**} & \multicolumn{4}{c}{**Control Asthma**} & \multicolumn{4}{c}{**Control Asthma**} (\(n=2398\))**} & \multicolumn{4}{c}{**Due to Asthma in Past**} \\ \multicolumn{1}{c}{} & \multicolumn{2}{c}{**(\(n=4855\))**} & \multicolumn{4}{c}{**(\(n=4875\))**} & \multicolumn{4}{c}{**(\(n=2776\))**} & \multicolumn{4}{c}{**(\(n=512\) Months (\(n=1929\))**} \\ \hline \multicolumn{1}{c}{} & \multicolumn{2}{c}{**OR**} & \multicolumn{1}{c}{\(p\)-**} & \multicolumn{1}{c}{**OR**} & \multicolumn{1}{c}{\(p\)**-**} & \multicolumn{1}{c}{**OR**} & \multicolumn{1}{c}{\(p\)**-**} & \multicolumn{1}{c}{**OR**} & \multicolumn{1}{c}{\(p\)**-**} \\ \multicolumn{1}{c}{} & \multicolumn{2}{c}{**(95\% CI)**} & \multicolumn{1}{c}{**Value**} & \multicolumn{1}{c}{**(95\% CI)**} & \multicolumn{1}{c}{**Value**} & \multicolumn{1}{c}{**(95\% CI)**} & \multicolumn{1}{c}{**Value**} & \multicolumn{1}{c}{**(95\% CI)**} & \multicolumn{1}{c}{**Value**} & \multicolumn{1}{c}{**(95\% CI)**} & \multicolumn{1}{c}{**Value**} \\ \hline Fruits \({}^{i}\) & & & & & & & & & \\ \hline
0 & 1.0 Ref & & 1.0 Ref & & 1.0 Ref & & 1.0 Ref & \\
1 & 1.07 (0.75, 1.54) & 0.685 & 0.88 (0.64, 1.20) & 0.411 & 1.85 (0.85, 1.05) & 0.123 & 1.30 (0.76, 2.23) & 0.338 & 0.73 (0.48, 1.09) & 0.121 \\
2 & 0.99 (0.69, 1.43) & 0.970 & 0.85 (0.61, 1.18) & 0.325 & 0.99 (0.49, 2.01) & 0.993 & 1.54 (0.89, 2.67) & 0.121 & 0.68 (0.46, 0.99) & **0.046** \\
3+ & 0.80 (0.54, 1.19) & 0.275 & 0.85 (0.60, 1.20) & 0.355 & 0.91 (0.41, 1.99) & 0.810 & 1.21 (0.68, 2.15) & 0.511 & 0.89 (0.56, 1.42) & 0.621 \\ \hline Vegetables \({}^{i}\) & & & & & & & & & \\ \hline
0 & 1.0 Ref & & 1.0 Ref & & 1.0 Ref & & 1.0 Ref & & 1.0 Ref \\
1 & 0.92 (0.69, 1.24) & 0.590 & 0.99 (0.78, 1.28) & 0.989 & 0.73 (0.43, 1.22) & 0.223 & 0.99 (0.63, 1.55) & 0.951 & 1.02 (0.70, 1.49) & 0.898 \\
2 & 1.15 (0.85, 1.56) & 0.351 & 0.98 (0.74, 1.30) & 0.900 & 0.92