Comparison of characteristics of inliers included and outliers removed for length using the IQR rule
| Variables | Outliers removed, n=15 (8%) | Inliers included, n=170 (92%) | p Value |
|---|---|---|---|
| Children | |||
| Gender (male) | 46.7% | 51.8% | 0.70 |
| Preterm | 6.7% | 11.8% | 0.55 |
| Mothers | |||
| Race (white) | 60% | 47.6% | 0.36 |
| Ethnicity (Hispanic) | 6.7% | 7.1% | 0.95 |
| Country of birth (USA) | 53.3% | 63.5% | 0.43 |
| Education (≥bachelor's degree) | 61.5% | 88.5% | 0.007* |
| Household income (≥$100 000 per year) | 57.1% | 76.2% | 0.26 |
| Occupation (management) | 40% | 40% | 1 |
| Age | 32.2±4.5 | 34.1±4.1 | 0.08 |
| BMI | 23.9±4.7 | 25.2±5.2 | 0.37 |
| Maternal confidence score | 57.6±4.9 | 57.4±3.1 | 0.84 |
| Maternal depression score (≥10) | 13.3% | 4.1% | 0.1 |
*p<0.05.
BMI, body mass index.