Table 3.
The relative strength of each factor in association with AOM.
| Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|
| Variables | Chi-square | P-value | Chi-square | P-value |
| Demographic and risk factors | ||||
| Age | 20.9 | <0.001 | 17.0 | 0.001 |
| Number of children in family | 2.45 | 0.12 | 6.45 | 0.011 |
| Family history of OM | 3.61 | 0.06 | 0.05 | 0.82 |
| Gender | 0.16 | 0.29 | 2.82 | 0.09 |
| Birth weight | 0.55 | 0.46 | 2.91 | 0.09 |
| Gestational age | 3.55 | 0.06 | 6.23 | 0.01 |
| Ethnicity | 0.83 | 0.36 | 0.77 | 0.38 |
| Race | 0.005 | 0.94 | 0.81 | 0.67 |
| Feeding status | 1.20 | 0.55 | 0.50 | 0.78 |
| Tobacco smoke exposure | 1.71 | 0.19 | 0.72 | 0.40 |
| Day care | 5.78 | 0.12 | 11.28 | 0.01 |
| Demographic Variables (Total) | 48.74 | <0.001 | 36.69 | 0.001 |
| Symptoms | ||||
| Sore throat | 0.044 | 0.83 | 0.33 | 0.86 |
| Cough | 5.98 | 0.014 | 3.06 | 0.08 |
| Nasal stuffiness | 2.55 | 0.11 | 0.08 | 0.78 |
| Runny nose | 10.24 | 0.001 | 0.69 | 0.41 |
| Watery eyes | 2.93 | 0.087 | 0.27 | 0.60 |
| Fever | 4.14 | 0.042 | 1.92 | 0.17 |
| Earache | 12.02 | 0.001 | 6.37 | 0.01 |
| Poor feeding | 2.28 | 0.13 | 0.048 | 0.83 |
| Restless sleep | 2.37 | 0.12 | 1.33 | 0.25 |
| Irritability | 2.17 | 0.14 | 1.34 | 0.25 |
| Symptom variables (Total) | 30.19 | <0.001 | 18.14 | 0.05 |