The importance of sample size for the estimation of F wave latency parameters in the peroneal nerve
The importance of sample size for the estimation of F wave latency parameters in the peroneal nerve
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DOI：
10.1016/s0921-884x(96)94675-5
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发表时间：
1996-10-01
期刊：
影响因子：
--
通讯作者：
Panayiotopoulos, CP
中科院分区：
文献类型：
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作者：
Chroni, E;Taub, N;Panayiotopoulos, CP
我们研究了20例健康受试者和20例神经病患者的腓神经F波，以评估样本量对以下F波潜伏期参数测量准确性的影响：F波最小潜伏期，平均潜伏期，中位数潜伏期和F时间离散度。将从大样本（65-110 F响应）获得的值与从10、20和40响应的较小样本获得的相应值进行比较。结果表明，与健康受试者相比，患者中较大的F波样本提供了对所有参数的同等准确的测量。在各种参数中，FchR需要最大的样本，FL平均值需要最小的样本，以达到相同精度的结果。40例样本满足几乎所有受试者腓神经所有F波潜伏期参数的要求，这一发现与尺神经的类似研究结果一致。
We studied the peroneal nerve F waves in 20 healthy subjects and 20 patients with neuropathy to assess the effect of sample size on the accuracy of measurements of the following F wave latency parameters: F wave minimum latency, mean latency, median latency and F chronodispersion. The values obtained from a large sample (65-110 F responses) were compared with the corresponding values from smaller samples of 10, 20 and 40 responses. The results indicated that equally accurate measurements for all parameters were provided by larger F wave samples in patients, compared with healthy subjects. Amongst the various parameters, FchR required the largest and FL mean the smallest sample, in order to achieve results of the same accuracy. A sample of 40 fulfilled the requirements for all F wave latency parameters of the peroneal nerve in almost all subjects, a finding which is in good agreement with that of a similar study for the ulnar nerve.