Table 3. Crude and adjusted ORs of AD (at 1 to 3 years of age, KNHANES-IV and V, 2007-2012).
| Characteristic | Crude OR | 95% CI | P value | Adjusted OR* | 95% CI | P value† |
|---|---|---|---|---|---|---|
| Feeding type I | ||||||
| Exclusive formula-feeding | 1.000 | - | - | 1.000 | - | - |
| Exclusive breast-feeding | 1.882 | 1.020–3.475 | 0.043† | 1.990 | 0.946–4.187 | 0.070 |
| Mixed feeding | 1.364 | 0.742–2.509 | 0.317 | 1.395 | 0.714–2.728 | 0.329 |
| Feeding type II | ||||||
| Formula-feeding | 1.000 | - | - | 1.000 | - | - |
| Exclusive breast-feeding | 1.442 | 0.994–2.091 | 0.054 | 1.495 | 0.932–2.398 | 0.095 |
| Duration of feeding (month) | ||||||
| Breast-feeding | 1.010 | 0.982–1.039 | 0.494 | 1.013 | 0.981–1.047 | 0.430 |
AD, atopic dermatitis; OR, odds ratio; CI, confidence interval; KNHANES-VI and V, The fourth and fifth Korea National Health and Nutrition Examination Survey.
*Adjusted by age, sex, residence, family size, familial income quartile, birth weight, current wheezing, start time of weaning, and history of parental allergic diseases; †P<0.050.