Segmented regression analysis of East of England data
| Parameter | Estimate | SE | p Value | 95% CI |
|---|---|---|---|---|
| Exclusive MBM at discharge | ||||
| Preintervention trend (monthly percentage increase) | 0.22 | 0.15 | 0.16 | −0.09 to 0.53 |
| Postintervention trend (monthly percentage increase) | 0.11 | 0.17 | 0.51 | −0.23 to 0.46 |
| Step change (% increase at February 2011) | 1.65 | 3.21 | 0.61 | −4.82 to 8.13 |
| Trend change (difference in preintervention and postintervention trend) | −0.11 | 0.23 | 0.65 | −0.57 to 0.36 |
| Any MBM at discharge | ||||
| Preintervention trend (monthly percentage increase) | 0.31 | 0.17 | 0.08 | −0.03 to 0.65 |
| Postintervention trend (monthly percentage increase) | 0.08 | 0.19 | 0.67 | −0.30 to 0.47 |
| Step change (% increase at February 2011) | 0.77 | 0.04 | 0.83 | −6.39 to 7.93 |
| Trend change (difference in preintervention and postintervention trend) | −0.22 | 0.26 | 0.38 | −0.74 to 0.29 |
| Care days where infant was fed MBM | ||||
| Preintervention trend (monthly percentage increase) | −0.35 | 0.30 | 0.02 | −0.64 to −0.06 |
| Postintervention trend (monthly percentage increase) | 0.15 | 0.34 | 0.36 | −0.18 to 0.48 |
| Step change (% increase at February 2011) | 5.13 | 5.80 | 0.08 | −0.56 to 10.81 |
| Trend change (difference in preintervention and postintervention trend) | 0.50 | 0.47 | 0.03 | 0.04 to 0.96 |
MBM, maternal breast milk.