Table 3.

Appropriateness for transthoracic echocardiography

Dataset	A: 2014 investigator chart review (n = 209)	B: 2016 clinician classification (n = 671)	C: 2016 subset: investigator chart review (n = 199)	Significance
All encounters				*,†
Appropriate	44.0% (n = 92)	32.2% (n = 216)	41.2% (n = 82)
May be appropriate	10.5% (n = 22)	6.4% (n = 43)	4.0% (n = 8)
Rarely appropriate	36.4% (n = 76)	58.7% (n = 394)	42.7% (n = 85)
Unclassifiable	9.1% (n = 19)	2.7% (n = 18)	12.1% (n = 24)
Murmur evaluations				*,†
Appropriate	46.7% (n = 42)	26.6% (n = 84)	33.3% (n = 28)
Rarely appropriate	53.3% (n = 48)	73.4% (n = 232)	57.1% (n = 48)
Unclassifiable	–	–	10.7% (n = 8)

^*Statistically significant difference between column A and column B

^†Statistically significant difference between column A and column C