TABLE 5.

Summary of Longitudinal Variability for the Centrally Digitized Echocardiographic Measurements Among HIV-Uninfected Children

Measurement	Children, n	Echos, n	Mean (Range)	Between-Child Variance	Within-Child Variance	ICC
Age 6–24 mo
Fractional shortening, %	325	718	38.3 (25.7–54.8)	8.57	9.55	0.47
End-diastolic dimension, cm	325	718	2.70 (1.82–3.49)	0.0225	0.0172	0.57
End-diastolic posterior wall thickness, cm	331	737	0.47 (0.25–0.79)	0.0024	0.0038	0.39
End-diastolic septal thickness, cm	331	730	0.59 (0.35–1.03)	0.0037	0.0070	0.34
Age 2–6 y
Fractional shortening, %	167	527	35.9 (26.4–50.2)	6.22	6.11	0.51
End-diastolic dimension, cm	167	527	3.30 (2.59–4.15)	0.0304	0.0198	0.60
End-diastolic posterior wall thickness, cm	169	534	0.57 (0.38–0.84)	0.0022	0.0037	0.38
End-diastolic septal thickness, cm	164	486	0.62 (0.25–1.07)	0.0042	0.0084	0.33