Eissa M K, Hudson K, Docker M F, Sawers R S, Newton J R
Fertil Steril. 1985 Dec;44(6):751-4. doi: 10.1016/s0015-0282(16)49032-1.
The intraobserver and interobserver variation of ultrasound measurement of Graafian follicles was assessed. Fourteen follicles from 10 to 30 mm in diameter were each measured three times in three orthogonal planes by three observers. The intraobserver standard deviation (SD) was 0.6 mm and interobserver SD, 1.2 mm, irrespective of follicle diameter. The pooled SD for both variables was 1.2 mm, giving 95% confidence limits of +/- 2.4 mm for any measurement.
评估了超声测量格拉夫卵泡时观察者内和观察者间的差异。由三名观察者在三个相互垂直的平面上，对10至30毫米直径的14个卵泡各测量三次。无论卵泡直径大小，观察者内标准差（SD）为0.6毫米，观察者间标准差为1.2毫米。两个变量的合并标准差为1.2毫米，任何测量的95%置信区间为±2.4毫米。
