Table 2. Correlations with magnitude of PPCE.

	R value 1	p value
Assessments of POCUS encounter
Patient-rated POCUS provider empathy	+ 0.67	0.0001
Patient-rated confidence in POCUS provider	+ 0.52	0.006
Observer-rated rapport in POCUS encounter2	+ 0.46	0.02
Provider-rated rapport in POCUS encounter3	+ 0.41	0.04
Assessments of healthcare experience
General satisfaction with providers’ skills and abilities	+ 0.70	< 0.0001
General quality of interactions with providers	+ 0.56	0.002
Quality of symptom management	+ 0.51	0.007
Overall satisfaction with care in this hospital	+ 0.44	0.02
General satisfaction with providers’ knowledge	+ 0.43	0.02
Overall satisfaction with hospitalization	+ 0.43	0.03
Patient characteristics
Post-encounter anxiety level4	– 0.49	0.009
Patient age	– 0.27	0.17
Patient sex	+ 0.13	0.51
Patient-rated severity of chest pain or dyspnea (chief complaint)	+ 0.04	0.83

¹Spearman r_s was calculated for all variables except sex, for which point-biserial r_pb was calculated.

²One pair of data points was excluded from this analysis due to missing observer ratings.

³Two pairs of data points were excluded from this analysis due to missing provider ratings.

⁴Anxiety level was assessed with the STAI-6, a six-item short-form of the STAI (State-Trait Anxiety Inventory). The aggregate score calculated by summing the anxiety-present features and the inverse of the anxiety-absent features. The survey utilized a 1–4 Likert scale, with 1 being “not at all” and 4 being “very much.” The maximum possible score is 24 and the minimum possible score is 6 [29, 30].