Table 3b.

Post-POCUS change in primary diagnosis, # diagnoses in differential, management, and attending confidence in diagnosis by team that performed the POCUS study; Community Site vs. University Site. For non-inferiority, the null hypothesis was primary team change in primary diagnosis greater than 20% below that of the university site. For equivalence, the null hypothesis was community site 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 POCUS performed at the community site was non-inferior to when POCUS was performed at the university site within a margin of 20%. Equivalence between the two sites was declared for other metrics within a margin of +/− 0.5. A p-value < 0.05 indicates statistically significant non-inferiority or equivalence.

	Community Site	University Site	p-value
Number POCUS Studies Performed, n	36	120
Change in Primary Diagnosis, n (%)	14 (39%, 23 – 55%)	41 (34%, 26 – 43%)	0.0013*
Any Change in Management, n (%, 95% CI)	8 (22%, 9 – 36%)	43 (36%, 27 – 44%)	0.21*
Pre-POCUS Confidence, Mean 5-point scale	3.1	3.3
Post-POCUS Confidence, Mean 5-point scale	3.8	3.9
Difference in mean confidence (95% CI)	0.6 (0.3 – 1.0)	0.7(0.5 – 0.9)	0.01**
Pre-POCUS Differential, mean # diagnoses	4.6	3.9
Post-POCUS Differential, mean # diagnoses	2.5	2.2
Difference in mean # of diagnoses post-POCUS (95% CI)	−2.1 (−2.7 – −1.59)	−1.7 (−2.0 – −1.4)	0.43**
Pre-POCUS management, mean # interventions	1.1	0.8
Post-POCUS Management, mean # interventions	1.3	0.7
Difference in mean # of interventions post-POCUS (95% CI)	0.1 (0.0 – 0.3)	−0.1 (−0.2 – 0.0)	0.015**

^*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