Department of Rehabilitation Medicine, Skåne University Hospital, SE-221 85, Lund, Sweden.
PM R. 2012 Mar;4(3):165-70. doi: 10.1016/j.pmrj.2011.11.004. Epub 2012 Feb 3.
To assess the reproducibility of the Berg Balance Scale (BBS) and the Single-leg Stance (SLS), and the validity of the SLS as an independent test of upright postural control in patients with chronic stroke.
An intra-rater test-retest reproducibility study. The BBS and the SLS were assessed twice, 7 days apart.
A university hospital.
Fifty individuals; 6-46 months after a stroke.
The reproducibility of the BBS and the SLS was evaluated with intraclass correlation coefficient (ICC(2,1)), the mean difference between the 2 test sessions (d) with 95% confidence interval (95% CI), the standard error of measurement (standard error of measurement [SEM]%), the smallest real difference (SRD%), and the Bland-Altman graphs. To assess validity of SLS, the relationship between the SLS and the BBS was analyzed by the Pearson correlation coefficient.
The ICC(2,1) was 0.88 for the BBS, and the ICC(2,1) values were 0.88 for the nonparetic limb and 0.92 for the paretic lower limb for the SLS. The smallest change that indicates a real improvement for a group of individuals, SEM%, was 3% for BBS, 15% for the nonparetic limb and 27% for the paretic limb for SLS. The smallest real difference for a single individual was 8% for BBS but was higher for SLS, at 42% for the nonparetic limb, and 74% for the paretic limb. There was a significant relationship between the SLS and the BBS (r = 0.65-0.79; P < .001).
The BBS and the SLS are reproducible measurements in patients with chronic stroke, but only the BBS is sensitive enough to follow changes over time or after an intervention. The SLS is strongly related to the BBS and can be used as an independent test to measure upright postural control after a stroke.
评估 Berg 平衡量表（BBS）和单腿站立（SLS）的可重复性，以及 SLS 作为慢性脑卒中患者直立姿势控制的独立测试的有效性。
一种内部测试-重测可重复性研究。BBS 和 SLS 分别在 7 天内进行两次评估。
一所大学医院。
50 人；中风后 6-46 个月。
采用组内相关系数（ICC（2,1））评估 BBS 和 SLS 的可重复性，两次测试之间的平均差异（d）及其 95%置信区间（95%CI），测量标准误差（测量标准误差[SEM]%），最小真实差异（SRD%）和 Bland-Altman 图。为了评估 SLS 的有效性，通过 Pearson 相关系数分析了 SLS 与 BBS 的关系。
BBS 的 ICC（2,1）为 0.88，SLS 非患侧下肢的 ICC（2,1）值为 0.88，患侧下肢的 ICC（2,1）值为 0.92。对于一组个体来说，表明真正改善的最小变化，SEM%，BBS 为 3%，SLS 非患侧下肢为 15%，患侧下肢为 27%。单个个体的最小真实差异为 BBS 的 8%，但 SLS 更高，非患侧下肢为 42%，患侧下肢为 74%。SLS 与 BBS 之间存在显著关系（r=0.65-0.79；P<.001）。
BBS 和 SLS 是慢性脑卒中患者可重复的测量方法，但只有 BBS 足够灵敏，可以随时间或干预后发生变化。SLS 与 BBS 密切相关，可作为脑卒中后直立姿势控制的独立测试。
