Santos Gilmar M, Souza Ana C S, Virtuoso Janeisa F, Tavares Graziela M S, Mazo Giovana Z
Physical Therapy Department, Universidade do Estado de Santa Catarina, Florianopolis, SC, Brazil.
Rev Bras Fisioter. 2011 Mar-Apr;15(2):95-101. doi: 10.1590/s1413-35552011000200003.
The consequences of falls are a major cause of autonomy and independence loss among the elderly. In this context, the Berg Balance Scale (BBS) has been widely used to detect the risk of falls in elderly.
To evaluate the predictive value of the BBS for fall risk in physically active and inactive elderly subjects.
The sample included 188 older adults with a mean age of 66 (±9) years. Of these, 91 participated in a regular physical activity program and 96 did not. We analyzed the cut-off scores of 45, 47, 49, 51 and 53 in both groups regarding the sensitivity (S), specificity (Sp), positive predictive value (PPV) and negative predictive value (NPV) of the test, including the positive likelihood ratio (PLR) and negative likelihood ratio (RVN) for diagnosing the risk of falls.
The mean BBS score was 54.7 in physically active subjects and 50.8 in inactive subjects, which was statistically significant (ρ=0.001). The best cut-off was a score of 49 for physically inactive subjects, with a sensitivity of 91% and a specificity of 92%. On the other hand, the BBS had low sensitivity (from 0 to 15%) and high specificity (between 83% and 100%) for physically active subjects at the cut-off points analyzed.
The scale did not achieve sufficient sensitivity to individual differences among physically active older people with higher levels of functional balance ability.
跌倒后果是老年人丧失自主和独立能力的主要原因。在此背景下，伯格平衡量表（BBS）已被广泛用于检测老年人的跌倒风险。
评估BBS对身体活动和不活动的老年受试者跌倒风险的预测价值。
样本包括188名平均年龄为66（±9）岁的老年人。其中，91人参加了常规体育活动项目，96人未参加。我们分析了两组中45、47、49、51和53分的截断分数在测试的敏感性（S）、特异性（Sp）、阳性预测值（PPV）和阴性预测值（NPV）方面的情况，包括诊断跌倒风险的阳性似然比（PLR）和阴性似然比（RVN）。
身体活动的受试者BBS平均得分为54.7分，不活动的受试者为50.8分，差异具有统计学意义（ρ=0.001）。对于身体不活动的受试者，最佳截断分数为49分，敏感性为91%，特异性为92%。另一方面，在所分析的截断点上，BBS对身体活动的受试者敏感性较低（从0到15%），特异性较高（在83%到100%之间）。
该量表对于功能平衡能力较高的身体活动的老年人个体差异未能达到足够的敏感性。
