Table 1. Coefficient of variation for delivered dose at each time delay/flow rate combination (n=10)
Coefficient of variation (%)
Time delay (s) / Flow rate (L/min) Combination
Diamond
Z-Stat
AC Plus
(0/5)
5%
6%
8%
(5/5)
5%
8%
18%
(10/5 )
7%
10%
16%
(0/15)
4%
4%
9%
(5/15)
4%
7%
14%
(10/15)
4%
6%
8%
(0/30)
2%
5%
7%
(5/30)
2%
4%
5%
(10/30)
6%
4%
12%