Training in EUS-Guided Fine Needle Aspiration: Safety and Diagnostic Yield of Attending Supervised, Trainee-Directed FNA from the Onset of Training

Table 2

Performance characteristics of supervised fellow-FNA and attending-FNA.

Variable	Fellow*	Attending**	𝑃 value
Average proportion of FNA passes with adequate cellularity (±SD)
(i)  Pancreas	70.3±32.4	68.8±35.6	0.71
(ii)  Mediastinal/upper abdominal lymph node	79.0±34.1	81.7±33.7	0.61
(iii)  All others	65.5±37.5	68.7±38.8	0.65
Proportion of cases with at least one diagnostic specimen (95% confidence interval) (𝑛=179 cases)
(i)  Pancreas	70.2 (61.0, 79.4)	71.2 (62.1, 80.4)	0.87
(ii)  Mediastinal/upper abdominal lymph node	57.8 (43.4, 72.2)	62.2 (48.1, 76.4)	0.67
(iii)  All others	78.1 (63.8, 92.4)	75.0 (60.0, 90.0)	0.77

Variables are expressed as the average proportion±SD, per site.
∗Fellow denotes the cumulative data from all three participating EUS fellows.
∗∗Attending FNA v. all fellow FNA.