MgSO4 uptake in babies born at ≤30 weeks’ gestation in NPP maternity units in England, October 2017–June 2020*
| Variable | Pre-implementation† | Post implementation† |
| Total number of eligible births | 3172 | 3014 |
| Total number of mothers given MgSO4, n (%) | 2279 (71.9) | 2527 (83.8) |
| Total number of mothers not given MgSO4, n (%) | 803 (25.3) | 447 (14.8) |
| Total number with MgSO4 data missing, n (%) | 90 (2.8) | 40 (1.3) |
| Mean MgSO4 uptake across all units, % (SD) | 70.9 (3.6) | 83.1 (3.5) |
| Mean MgSO4 missing data across all units, % (SD) (% range) | 2.9 (1.3) (1.1–5.6) | 1.4 (1.0) (0–3.1) |
| Reason MgSO4 not given, n (%) | ||
| Contraindicated | 9 (1.2) | 6 (1.3) |
| Declined | 7 (0.7) | 3 (0.7) |
| Delivery imminent | 499 (62.1) | 337 (75.4) |
| Not appropriate | 69 (8.6) | 24 (5.4) |
| Not offered | 129 (16.1) | 51 (11.4) |
| Data missing | 90 (11.2) | 26 (5.8) |
*MgSO4 data from records on singleton births and the first born of multiples with records in the data set.
†Figures cover the 12 months prior to, and 12 months following the recorded NPP adoption date at each unit, excluding the month of adoption itself.
MgSO4, magnesium sulfate; NPP, National PReCePT Programme; PReCePT, Preventing Cerebral Palsy in Pre Term labour.