Table 3a.

Post-POCUS change in primary diagnosis, # diagnoses in differential, management, and attending confidence in diagnosis by team that performed the POCUS study; Primary Team vs dedicated US Team. For non-inferiority, the null hypothesis was primary team change in primary diagnosis greater than 20% below that of the US team. For equivalence, the null hypothesis was primary team change in mean # of diagnoses, mean confidence level, or mean # of management options greater than 0.5 diagnoses, confidence levels, or interventions. Frequency of change in the primary diagnosis when the primary treating team performed the POCUS was non-inferior to when POCUS was performed by the US team within a margin of 20%. Likewise, equivalence between the two performing teams was declared for other metrics within a margin of +/− 0.5. POCUS=Point of Care Ultrasound. A p-value < 0.05 indicates statistically significant non-inferiority or equivalence.

	Primary Team	US Team	p-value
Number POCUS Studies Performed, n	65	91
Change in Primary Diagnosis, n (%, 95% CI)	26 (40%, 28 – 52%)	29 (32%, 22 – 41%)	< .0001*
Any Change in Management, n (%, 95% CI)	22 (34%, 22 – 45%)	29 (32%, 22 – 41%)	0.0014*
Pre-POCUS Confidence, Mean 5-point scale	3.2	3.2
Post-POCUS Confidence, Mean 5-point scale	3.9	3.9
Difference in mean confidence (95% CI)	0.7 (0.5 – 1.0)	0.6 (0.5 – 0.8)	0.0059**
Pre-POCUS Differential, mean # diagnoses	4.1	4.1
Post-POCUS Differential, mean # diagnoses	2.3	2.3
Difference in mean # of diagnoses post-POCUS (95% CI)	−1.8 (−2.2 – −1.4)	−1.8 (−2.1 – −1.4)	0.034**
Pre-POCUS management, mean # interventions	1.0	0.8
Post-POCUS management, mean # interventions	1.0	0.8
Difference in mean # of interventions post-POCUS (95% CI)	0.0 (−0.2 – 0.1)	−0.1 (−0.2 – 0.1)	< .0001**

^*p-value for non-inferiority with −20% margin

^**p-value for equivalence with ± 0.5 diagnosis, ± 0.5 intervention or ± 0.5 level of confidence difference