Association between asthma prevalence and indicators of socioeconomic status among children aged 6–7 yrs, Rome
| Subjects | Asthma prevalence % | OR1 (95% CI) | OR2 (95% CI) | OR3 (95% CI) | OR4 (95% CI) | |
| Father's education | ||||||
| University | 690 | 9.8 | 1.00 | 1.00 | 1.00 | 1.00 |
| High school | 1456 | 10.3 | 1.01 (0.7–1.4) | 0.89 (0.6–1.3) | 0.92 (0.6–1.3) | 1.01 (0.7–1.4) |
| Junior High school | 1293 | 12.0 | 1.23 (0.9–1.7) | 1.11 (0.7–1.7) | 1.06 (0.7–1.5) | 1.21 (0.8–1.8) |
| Primary school | 364 | 15.4 | 1.68 (1.09–2.6) | 1.51 (0.9–2.6) | 1.43 (0.9–2.3) | 1.64 (1.02–2.6) |
| p‐value for trend | 0.010 | 0.053 | 0.095 | 0.022 | ||
| Mother's education | ||||||
| University | 573 | 9.5 | 1.00 | 1.00 | ||
| High school | 1588 | 11.4 | 1.21 (0.8–1.7) | 1.17 (0.7–2.1) | ||
| Junior High school | 1227 | 11.7 | 1.27 (0.9–1.8) | 1.13 (0.7–1.8) | ||
| Primary school | 390 | 12.8 | 1.46 (0.9–2.3) | 1.18 (0.8–1.8) | ||
| p‐value for trend | 0.116 | 0.751 | ||||
| SES index | ||||||
| Highest | 629 | 9.5 | 1.00 | 1.00 | ||
| Intermediate | 829 | 8.6 | 0.95 (0.6–1.4) | 0.93 (0.6–1.4) | ||
| Low | 1036 | 13.5 | 1.53 (1.09–2.1) | 1.47 (1.03–2.1) | ||
| Lowest | 963 | 12.6 | 1.31 (0.9–1.8) | 1.19 (0.8–1.7) | ||
| p‐value for trend | 0.018 | 0.130 | ||||
| SES index | ||||||
| Highest | 539 | 9.8 | 1.00 | 1.00 | ||
| Intermediate | 896 | 11.1 | 1.11 (0.7–1.6) | 1.04 (0.7–1.5) | ||
| Low | 1038 | 10.9 | 1.11 (0.8–1.6) | 1.00 (0.7–1.5) | ||
| Lowest | 998 | 12.8 | 1.27 (0.9–1.8) | 1.06 (0.7–1.6) | ||
| p‐value for trend | 0.198 | 0.817 |
%: crude prevalence
odds ratio (OR)1: adjustment made for parents' smoking habit
OR2 dependent variables: father's education, mother's education, and parents' smoking habit
OR3 dependent variables: father's education, socioeconomic status (SES) index, and parents' smoking habit
OR4 dependent variables: father's education, income area index, and parents' smoking habit
CI: confidence interval