Table 1 The standard table aimed to highlight power power analysis [17]

On the primary outcome:

Ramsey sedation score (RSS)

Based on the two-tailed statistical test:

Two-tailed

And accepting the cutoff for significance (α):

0.05

and a power (1-β) of:

0.80

The variability of the primary outcome was:

In the study by Haspolat et al., RSS scores were taken into account (group I mean 4.43 ± 1.87, group II mean 3.28 ± 1.51) [18]

We considered as clinically relevant a difference (or a different effect, please specify) of:

1

Consequently, the effect size was:

0.67

The total sample size needed was:

72