Table 5.

Comparison of EHR data and primary Track and Shape trial data.

Study Population	Time Point	Data Type	Estimated mean change in weight* from baseline, intervention group	Estimated mean change in weight from baseline, usual care group	Estimated mean difference in change from baseline, intervention vs. usual care	Estimated mean difference in change from baseline, intervention vs. usual care, sensitivity analysis
Track	6 Months	EHR data	−4.3 (−5.3, −3.3)	0.5 (−0.4, 1.5)	−4.8 (−6.2, −3.5)	−4.6 (−6.0, −3.3)
		Trial Data	−4.1 (−4.8, −3.3)	0.3 (−0.4, 1.1)	−4.4 (−5.5, −3.3)
	12 Months	EHR data	−3.3 (−4.4, −2.2)	−0.05 (−1.1, 1.0)	−3.3 (−4.7, −1.8)	−3.2 (−4.6, −1.7)
		Trial Data	−4.0 (−4.9, −3.0)	−0.1 (−1.0, 0.8)	−3.8 (−5.1, −2.5)
	18 Months	EHR Data	−2.3 (−3.6, −1.0)	0.5 (−0.7, 1.8)	−2.8 (−4.5, −1.1)	−2.9 (−4.6, −1.1)
Shape	6 Months	EHR data	−0.5 (−1.6, 0.6)	−0.2 (−1.3, 0.9)	−0.3 (−1.7, 1.1)	−0.7 (−2.1, 0.6)
		Trial Data	−1.0 (−1.8, −0.2)	0.1 (−0.7, 0.9)	−1.1 (−2.3, 0.04)
	12 Months	EHR data	−0.7 (−2.2, 0.9)	0.2 (−1.4, 1.8)	−0.9 (−3.0, 1.3)	−1.5 (−3.4, 0.5)
		Trial Data	−1.0 (−2.0, −0.02)	0.5 (−0.5, 1.5)	−1.4 (−2.8, −0.1)
	18 Months	EHR Data	−0.5 (−2.3, 1.3)	1.2 (−0.6, 3.0)	−1.7 (−4.2, 0.7)	−2.2 (−4.6, 0.2)
		Trial Data	−0.9 (−2.1, 0.3)	0.8 (−0.4, 2.0)	−1.7 (−3.3, −0.2)

^*Notes: Trial data estimates are extracted directly from the Track and Shape main results paper. All estimates are in kilograms (kg). Estimates for both types of data are from mixed effects models, and in Track they are adjusted for health center, gender, and ethnicity. Numbers in parentheses are lower and upper ends of 95% confidence intervals. Abbreviation: EHR – Electronic Health Records.