Characteristics of balance performance in the Chinese elderly by age and gender

BMC Geriatrics

Table 5 Dynamic balance in the elderly by age

Age (yrs)	n	III 9		III 10		III 11		III 12		III 13		III 14		III 15		III 16
Age (yrs)	n	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%
60-	511	498	97.5^a _A	494	96.7^a_A	470	92.0^a _B	495	96.9^a _A	496	97.1^a _A	502	98.2^a _A	501	98.0^a _A	496	97.1^a _A
65-	530	506	95.5^a _A	492	92.8^a_AB	468	88.3^a _B	502	94.7^a _A	501	94.5^a _A	513	96.8^a _A	507	95.7^ab_A	507	95.7^ab_A
70-	378	358	94.7^a _A	349	92.3^a_AB	331	87.6^ab_B	350	92.6^ab_AB	353	93.4^a _AB	366	96.8^a _A	364	96.3^a _A	348	92.1^b _AB
75-	297	258	86.9^b _ABCD	249	83.8^b_ABCD	237	79.8^b _CD	257	86.5^bc_ABCD	244	82.2^b _BD	270	90.9^b _A	269	90.6^b _AB	251	84.5^c _ABCD
80-	165	130	78.8^bc_AB	126	76.4^b_AB	108	65.5^c _B	126	76.4^cd_AB	120	72.7^bc_AB	139	84.2^bc_A	132	80.0^c _AB	124	75.2^cd_AB
85–97	103	67	65.0^c _AB	59	57.3^c_AB	51	49.5^c _B	64	62.1^d _AB	58	56.3^c _AB	75	72.8^c _A	71	68.9^c _AB	61	59.2^d _AB
Total	1984	1817	91.6 _ABC	1769	89.2 _C	1665	83.9 _D	1794	90.4 _BC	1772	89.3 _C	1865	94.0 _A	1844	92.9 _AB	1787	90.1 _C
χ²		175.7		186.2		171.6		175.9		234.9		143.8		167.9		209.1
P		<0.0001		<0.0001		<0.0001		<0.0001		<0.0001		<0.0001		<0.0001		<0.0001

Superscript lowercase letters (a, b, c, etc) indicated multiple comparison results among various age groups. Subscript capital letters (A, B, C, etc) indicated multiple comparison results between items. Same letters indicated non-significant difference, different letters indicated significant differences in statistics. Significance level was 0.05

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