Table 6.

Results of the objective structured assessment of technical skills (OSATS) global rating scale (detail)

ΔOSATS	Multimedia-based training (n = 18)	Practical training (n = 17)	Combination training (n = 18)	Control group (n = 17)
Global rating scalea
Respect for tissue	1.2 ± 1.7	0.5 ± 1.2	1.3 ± 1.8	0.1 ± 1.3
Time and motion	1.3 ± 1.2	0.9 ± 1.0	1.4 ± 1.3	0.7 ± 1.1
Handling of instruments	1.4 ± 1.2	0.7 ± 1.1	1.7 ± 1.4	0.2 ± 1.4
Flow of motion	1.2 ± 1.1	1.0 ± 1.1	1.6 ± 1.3	0.3 ± 1.2
Knowledge of procedure	1.8 ± 1.2	0.9 ± 1.4	1.9 ± 1.4	0.6 ± 1.0

^aGlobal rating scale data for each rated detail for all four groups as mean ± standard deviation. Shown is the improvement from pre- to posttest value: Δ