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. 2020 Dec 9;20:498. doi: 10.1186/s12909-020-02419-4

Table 1.

Results of self and external perception of supervision levels

Self perception External perception
Pre training Post training Pre training Post training
A - Chest tube insertion
 Lowest value SL 2 3 1 2
 Highest value SL 5 5 5 5
 Median SL 3 4 2 4
 95% CI for median SL 3.0–4.0 4.0–4.23 2.0–3.0 3.0–4.0
 IQR 2.0–4.0 3.0–5.0 2.0–3.25 3.0–4.0
 Positive difference 21/29 (72%) 24/29 (83%)
 No difference 8/29 (28%) 5/29 (17%)
 Negative difference 0/29 (0%) 1/29 (3)%)
P-value 0.0001 < 0.0001
B - Pericardiocentesis
 Lowest value SL 1 2 1 2
 Highest value SL 3 4 2 4
 Median SL 1 2 1 3
 95% CI for median SL 1.0–1.0 2.0–2.23 1.0–1.0 2.0–3.0
 IQR 1.0–1.25 2.0–3.0 1.0–1.0 2.0–3.0
 Positive difference 26/29 (90%) 29/29 (100%)
 No difference 3/29 (10%) 0/29 (0%)
 Negative difference 0/29 (0%) 0/29 (0%)
 P-value < 0.0001 < 0.0001
C - Cricothyroidotomy
 Lowest value SL 1 2 1 2
 Highest value SL 5 5 2 4
 Median SL 2 3 1 3
 95% CI for median SL 1.0–2.0 2.0–4.0 1.0–1.0 2.0–3.0
 IQR 1.0–2.0 2.0–4.0 1.0–1.25 2.0–3.0
 Positive difference 22/29 (76%) 29/29 (100%)
 No difference 7/29 (24%) 0/29 (0%)
 Negative difference 0/29 (0%) 0/29 (0%)
 P-value < 0.0001 < 0.0001

SL supervision level, CI confidence interval, IQR (25th–75th) Interquartile range; Range of supervision level 1–5: 1) Observation but not execution, even with direct supervision, 2) execution with direct, proactive supervision, 3) execution with reactive supervision, i.e., on request and quickly available, 4) supervision at a distance and/or post hoc and 5) supervision provided by the trainee to colleagues