Point-of-care ultrasound in primary care: a systematic review of generalist performed point-of-care ultrasound in unselected populations

The Ultrasound Journal

Table 7 Summary of test accuracy findings in soft-tissue ultrasound

Test	Author	Op.	Year	Country (no. of studies in MA)	Train.	n	Prev (%)	Age	Criterion standard	Sn. in % (95% CI)	Sp. in % (95% CI)	LR+ (95% CI)	LR− (95% CI)
Abscess	Barbic et al. [173]	EP	2017	MA (8)	15 m.–1 d.	747	NR	All	Positive I&D and/or follow-up	96.2 (91.1–98.4)	82.9 (60.4–93.9)	5.63 (2.2–14.6)	0.05 (0.01–0.11)
	Subramaniam et al. [174]	EP	2016	MA (6)	30 m.–2 d.	413^a	NR	All	Positive I&D and/or follow-up	97 (94–98)	83 (75–88)	5.5 (3.7–8.2)	0.04 (0.02–0.08)
	Gaspari et al. [175]	EP	2012	USA	NR	65	46	42	Positive I&D and/or follow-up	96.7 (87.9–99.4)	85.7 (77.4–88.0)	6.76^a	0.0385^a
	Mower et al. [177]	EP	2019	USA	NR	1216	68	36	Positive I&D immediately or 1 week	94.0 (92.1–95.4)	94.1 (91.3–96.2)	15.9 (10.7–23.6)	0.06 (0.05–0.08)
Peritonsillar abscess	Costantino et al. [182]	EP	2012	USA	NR	14	57	26	Positive I&D and follow-up	100 (63–100)^a	100 (54–100)^a	∞^a	0^a
Dental abscess	Adhikari et al. [183]	EP	2012	USA	NR	19	63	40	Positive I&D	92 (62–100)^a	100 (59–100)^a	∞^a	0.08 (0.01–0.54)
Foreign body	Friedman et al. [186]	EP	2005	USA	NR	131	9	10	Identification of FB	66.7 (34.8–90.1)	96.6 (91.6–99.1)	19.8^a (6.99–56.3)^a	0.34^a (0.15–0.77)^a

MA, meta-analysis (shown in italics with number of studies in brackets); Op., operators; Train., time spent in didactic intervention; m., minutes; d., days; n, size of population; Prev., prevalence; Age, median- or mean age; Sn., sensitivity; Sp., specificity; CI, confidence interval; LR+, positive likelihood ratio; LR−, negative likelihood ratio; EP, emergency physician; NR, not reported; I&D, incision and drainage
^aCalculated by the authors from available data