Table 2: Knowledge and skills scores of the two groups at different time points.

VariableIn-service nurses mean (SD) Preservice students
mean (SD)
Mean difference
(95% CI); value
Change from T1 to T2 between the groups; adj. mean difference* (95% CI); value

(1) Knowledge scores
Initial
(T0) Median (range)
6.6 (2.6)1i5.8 (1.5)1p0.86 (−0.1 to 1.8);
0.08
Immediately after training
(T1) Median (range)
11.5 (1.9)2i11.3 (2)2p0.24 (−0.6 to 1.17);
0.60
0.06 (−0.87 to 0.98);
   0.90
6 weeks after training
(T2) Median (range)
10.5 (2.4)3i9.1 (2)3p1.44 (0.33 to 2.54);
0.01
Interaction between change in scores from T1 to T2 and designation

(2) Skill scores
Initial
(T0) Median (range)
3.2 (2.3)1i6.5 (1.6)1p−3.27 (−4.3 to −2.23);
<0.001
Immediately after training
(T1) Median (range)
10.7 (1.3)2i10.1 (1.1)2p0.54 (−0.11 to 1.19);
0.10
0.91 (−0.08 to 1.91);
   0.07
6 weeks after training
(T2) Median (range)
7.4 (2.6)3i9.8 (1.6)3p−2.4 (−3.43 to −1.34);
<0.001
Interaction between change in scores from T1 to T2 and designation

SD: standard deviation; CI: confidence interval.
*Adjusted for baseline (T0) values using generalized estimating equation (GEE)—population averaged model.
1i-, 2i-, and 3i-proportion of in-service nurses evaluated at T0, T1, and T2 were 28, 28, and 22, respectively.
1p-, 2p-, and 3p-proportion of preservice nurses evaluated at T0, T1, and T2 were 46, 46, and 43, respectively.