Table 4. Multivariable Logistic Regression Analysis: Relationship between Cerebral Palsy Incidence and Economic Status according to the Presence of History of Prematurity or LBW.
| Income group | Prematurity history | LBW history | ||
|---|---|---|---|---|
| No | Yes | No | Yes | |
| 1st group | 1.00 | 1.00 | 1.00 | 1.00 |
| 2nd group | 0.92 (0.82–1.04) | 0.94 (0.79–1.13) | 0.92 (0.82–1.04) | 0.94 (0.76–1.15) |
| 3rd group | 0.96 (0.86–1.06) | 1.05 (0.90–1.22) | 0.94 (0.85–1.04) | 1.13 (0.94–1.35) |
| 4th group | 0.95 (0.86–1.05) | 1.07 (0.92–1.24) | 0.94 (0.86–1.04) | 1.12 (0.94–1.33) |
| 5th group | 1.03 (0.92–1.14) | 1.15 (0.99–1.35) | 1.04 (0.94–1.15) | 1.16 (0.97–1.40) |
LBW, low birth weight.
Data are odds ratio (95% confidence interval).