Table 4:
Length of in-hospital stay.
Variable
Group
𝑁
𝑥
±
𝑠
𝑀
𝑍
𝑃
Length of stay
(days)
Intervention
197
9.2 ± 4.2
9
5.08
<0.001
Historical
405
12.7 ± 8.6
11