Table.

UE findings for Manco-Johnson instrument items in a derivation cohort (n=78) of healthy children, by age group.

Age group	Age range	n	Median (IQR) contralateral difference in mid-upper arm circumference (cm)	Median (IQR) contralateral difference in mid-forearm circumference (cm)
Preschool	12 mo-< 6 y	30	0.2 (0.5)	0.3 (0.5)
School age	6 y-< 13 y	28	0.1 (0.4)	0.0 (0.5)
Adolescent	13 y-21 y	20	0.2 (0.5)	0.0 (0.6)

Abbreviations: UE, upper extremity; PTS, post-thrombotic syndrome; n, number of subjects; IQR, inter-quartile range.

Data for contralateral differences in UE circumference measurements are summarized. PTS findings of venous stasis dermatitis, venous stasis ulcers, chronic UE pain that limits aerobic activities, chronic UE pain that limits activities of daily living, and chronic UE pain at rest were all absent.