Fleiss J L, Park M H, Chilton N W
J Periodontol. 1987 Jul;58(7):460-3. doi: 10.1902/jop.1987.58.7.460.
Replicate measurements of probing depth and attachment level were made by three examiners on the six Ramfjord teeth of 34 patients. Within-mouth correlations were high for single measurements, and yet higher for means across replicate measurements. Inter- and intra-examiner variability were both found to be low relative to between-patient variability. Conclusions are that the low within-mouth correlations reported by others may be the result of poor reliability, and that it is inappropriate to take the individual site as the unit of statistical analysis in clinical studies of periodontitis.
由三名检查者对34名患者的6颗Ramfjord牙进行牙周探诊深度和附着水平的重复测量。单次测量的口内相关性较高，重复测量均值的相关性更高。相对于患者间的变异性，检查者间和检查者内的变异性均较低。结论是，其他人报告的低口内相关性可能是可靠性差的结果，并且在牙周炎临床研究中以单个部位作为统计分析单位是不合适的。
