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. Author manuscript; available in PMC: 2014 Jan 1.

Published in final edited form as: Arthritis Care Res (Hoboken). 2013 Jan;65(1):44–52. doi: 10.1002/acr.21868

Table 1.

Descriptive statistics of the whole sample, NROA group and the ROA group.

		Whole Group		NROA		ROA Group

	n	Mean (SD)	n	Mean (SD)	n	Mean (SD)
Age (y)	125	63.0 (7.2)	52	60.7(7.1)	73	64.6 (6.7)^*
Body Mass (kg)	124	73.1 (14.1)	52	68.5 (13.2)	72	76.5 (14.0)^*
Height (m)	122	1.62(0.64)	51	1.61 (0.67)	72	1.62(0.63)
BMI (kg/m²)	123	28.0 (5.0)	52	26.4 (5.0)	71	29.1 (4.7)^*
Knee Strength (N/kg)	114	4.0(1.2)	50	4.2(1.3)	65	3.8(1.1)^*
Physical Performance (s)	123	12.5(4.1)	52	11.4(3.4)	71	13.3 (4.4)^*

BMI = Body mass index

^*

(p < 0.05) between NROA and ROA groups