Table 1.

Demographic Characteristics

Variable	Group				t Value	P Value
	Functional Ankle Instability		Uninjured
	Mean ± SD	95% Confidence Interval	Mean ± SD	95% Confidence Interval
Height, m	1.71 ± 0.08	1.68, 1.74	1.69 ± 0.08	1.67, 1.72	0.974	.33
Mass, kg	74.39 ± 12.78	70.26, 78.51	67.94 ± 11.27	63.82, 72.07	2.2	.03
Age, y	25 ± 5	23.07, 26.17	23 ± 4	21.63, 24.73	1.3	.19
Giveway episodes/mo	3.9 ± 5.2	2.58, 5.12	0 ± 0	NA	4.3	<.005
Initial severity, degreea	2.4 ± 0.4	2.31, 2.49	0 ± 0	NA	38.3	<.005
Exercise, h/wk	8 ± 5	6.68, 10.06	7 ± 5	4.96, 8.34	1.4	.16
Cumberland Ankle Instability Tool Score	19 ± 4	18.24, 20.29	29 ± 1	28.38, 30.44	13.9	<.005

Abbreviation: NA, not applicable.

^a Severity of ankle injury based on the patient's recall of the health care provider's diagnosis.