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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Circ Cardiovasc Imaging. 2017 Aug;10(8):e006495. doi: 10.1161/CIRCIMAGING.117.006495

Table 3.

Measuring Variation in Study Interval due to Physicians. Patient factors include, age, gender, race, distance from the echo center, and estimated income, LA size, RVSP, and having multiple valve disease. Provider factors include specialty and years of experience ordering TTEs.

Metric Unadjusted
Model		 Adjusted for
Patient Factors		 Adjusted for Patient
and Provider Factors*
Variation due to providers (P-value) 0.0.3417 (<0.0001) 0.3355 (<0.0001) 0.2296 (<0.0001)
Variation due to Patients (P-value) 0.6282 (<0.0001) 0.6078 (<0.0001) 0.6091 (<0.0001)
Intra-class Correlation (ICC) 0.35 0.36 0.27