Results of stepwise multiple regression analysis in preterm infants; dependent variable is carotid flow
| Independent variable | Simplecorrelationcoefficient | Partialcorrelationcoefficient | Regressioncoefficient | Confidenceinterval (95%) |
|---|---|---|---|---|
| Although all the independent variables were associated with carotid flow in simple correlation, multiple regression analysis showed that only weight and age in days were independently associated with carotid flow. | ||||
| **p<0.01. | ||||
| Day | 0.41** | 0.44** | 0.16 | 0.056 to 0.27 |
| Gestation (weeks) | 0.61** | −0.13 | Excluded from model | |
| Weight (kg) | 0.64** | 0.65** | 13.6 | 8.49 to 18.70 |
| Cardiac output (ml/min) | 0.59** | −0.20 | Excluded from model | |
| Intercept | – | – | 5.72 | −2.12 to 13.56 |