. Author manuscript; available in PMC: 2013 Dec 1.

Published in final edited form as: Arthritis Care Res (Hoboken). 2012 Dec;64(12):1895–1902. doi: 10.1002/acr.21783

Table 2.

Total and Sex-Specific Spearman Rank Correlation Coefficients of the COP-Based Static Balance Measures: The MOBILIZE Boston Study

Static Balance Measures^**	MedioLateral Avg Sway (mm)	Mediolateral RMS (mm)	Area Ellipse Sway (mm²)	Anterioposterior Path (mm)	Average Sway Speed (mm/s)
	All
Mediolateral Avg Sway (mm)	1.0	0.997	0.910	0.268	0.340
Mediolateral RMS (mm)		1.0	0.917	0.280	0.354
Area Ellipse Sway (mm²)			1.0	0.306	0.362
Anterioposterior Path Length (mm)				1.0	0.970
Average Sway Speed (mm/s)					1.0
	Men
Mediolateral Avg Sway (mm)	1.0	0.996	0.913	0.338	0.444
Mediolateral RMS (mm)		1.0	0.920	0.352	0.460
Area Ellipse Sway (mm²)			1.0	0.393	0.481
Anterioposterior Path Length (mm)				1.0	0.967
Average Sway Speed (mm/s)					1.0
	Women
Mediolateral Avg Sway (mm)	1.0	0.997	0.897	0.221	0.266
Mediolateral RMS (mm)		1.0	0.903	0.223	0.280
Area Ellipse Sway (mm²)			1.0	0.251	0.288
Anterioposterior Path Length (mm)				1.0	0.972
Average Sway Speed (mm/s)					1.0

^**

all p values < 0.0001