a significant trendp=0.001
Limiting the analysis to the IBIS period reveals a significant trend for fewer IVH (p=0.001).
Limiting the analysis to the IBIS period reveals a significant trend for fewer IVH (p=0.001).
An overall trend analysis, however, reveals a stable IVH incidence over time, which was confirmed by a propensity score matched comparison for the odds of IVH between the two periods.