Table 2. Reference values for the Y Balance Test (expressed as a percentage of the leg length [%LL]) and LEFS-Ar.

Variable		Females		Males		Gender difference
		Mean ± SD	95% CI	Mean ± SD	95%CI	Mean difference (95% CI)
Anterior (%LL)
	Right	70.1 ± 4.1	68.6–71.6	73.1 ± 7.3	70.4–75.8	2.9 (−0.08 to 6.0)
	Left	70.4 ± 4.3	68.8–71.9	73.5 ± 8.5	70.4–76.7	3.2 (−0.32 to 6.6)
	Dominant	70.2 ± 4.3	68.6–71.7	73.0 ± 7.5	70.2–75.8	2.8 (−0.3 to 6.0)
	Non-dominant	70.3 ± 4.1	68.8–71.9	73.6 ± 8.3	70.6–76.7	3.3 (−0.1 to 6.7)
	Averagea	70.3 ± 3.9	68.8–71.7	73.3 ± 7.0	70.7–75.9	3.1 (0.1 to 6.0)*
Posteromedial (%LL)
	Right	93.7 ± 7.3	91.0–96.4	104.2 ± 8.4	101.1–107.4	10.5 (6.5 to 14.6)*
	Left	92.9 ± 7.8	90.0–95.8	107.0 ± 8.7	103.8–110.2	14.1 (9.8 to 18.3)*
	Dominant	93.4 ± 7.4	90.7–96.1	104.3 ± 8.6	101.0–107.5	10.8 (6.7 to 14.9)*
	Non-dominant	93.2 ± 7.9	90.3–96.1	107.0 ± 8.5	103.8–110.2	13.8 (9.6 to 18.0)*
	Average	93.3 ± 7.3	90.6–96.0	105.6 ± 7.8	102.7–108.6	12.3 (8.4 to 16.2)*
Posterolateral (%LL)
	Right	92.3 ± 8.0	89.4–95.3	105.0 ± 10.0	101.3–108.8	12.6 (8.0 to 17.3)*
	Left	92.8 ± 9.0	89.5–96.1	105.3 ± 11.6	101.0–109.7	12.5 (7.2 to 17.8)*
	Dominant	92.3 ± 8.5	89.2–95.4	105.8 ± 10.5	101.9–109.7	13.5 (8.7 to 18.4)*
	Non-dominant	92.9 ± 8.6	89.8–96.0	104.5 ± 11.2	100.4–108.7	11.6 (6.5 to 16.7)*
	Average	92.6 ± 8.0	89.6–95.5	105.2 ± 10.3	101.3–109.0	12.6 (7.8 to 17.3)*
Composite (%LL)
	Right	85.4 ± 5.7	83.3–87.5	94.1 ± 7.2	91.4–96.8	8.7 (5.4 to 12.1)*
	Left	85.4 ± 6.3	83.0–87.7	95.3 ± 7.4	92.5–98.1	9.9 (6.4 to 13.4)*
	Dominant	85.3 ± 6.0	83.1–87.5	94.1 ± 7.0	91.5–96.8	8.8 (5.5 to 12.2)*
	Non-dominant	85.5 ± 6.1	83.2–87.7	95.3 ± 7.6	92.5–98.1	9.8 (6.3 to 13.3)*
	Average	85.4 ± 5.8	83.2–87.5	94.7 ± 7.0	92.1–97.3	9.3 (6.0 to 12.6)*
	LEFS-Ar	74.3 ± 6.6	71.9–76.7	74.8 ± 5.2	72.8–76.7	0.44 (−2.6 to 3.5)

%LL: percentage of leg length; CI: confidence interval; LEFS-Ar: Arabic version of the Lower Extremity Functional Scale. ^aAverage of both the legs; *Significant difference between males and females (p < 0.05)