Draft Derek, Lucas Victoria S, McDonald Fraser, Andiappan Manoharan, Roberts Graham
Department of Pathology, Homer Stryker MD School of Medicine, Western Michigan University, Kalamazoo, MI.
Faculty of Dentistry, Oral & Craniofacial Sciences, Department of Orthodontics, King's College London, Guy's Tower Wing, Great Maze Pond, London Bridge, SE1 9RT, U.K.
J Forensic Sci. 2019 Sep;64(5):1506-1509. doi: 10.1111/1556-4029.14049. Epub 2019 Apr 1.
The expression of uncertainty is defined by the standard deviation and is usually expressed in multiples of the standard deviation (±1sd, ±2sd, and ±3sd). The objective was to use weighting of the sd calculation by the number or count of subjects for each tooth development stage. A comparison shows the difference between the range of uncertainty using the unweighted sd and the weighted sd. The range of uncertainty related to Dental Age Estimation is statistically significantly greater (p < 0.001) for the weighted sd compared to the unweighted sd. It is concluded that the number of subjects for each Tooth Development Stage in the Reference Data set should be included in the calculation for a single Dental Age Estimation using the Simple Average Method when presenting the uncertainty associated with the point estimate of the "mean" for Dental Age Estimation of a single subject of unknown age.
不确定性的表达由标准差定义，通常以标准差的倍数表示（±1标准差、±2标准差和±3标准差）。目的是根据每个牙齿发育阶段的受试者数量或计数对标准差计算进行加权。比较显示了使用未加权标准差和加权标准差时不确定性范围的差异。与未加权标准差相比，加权标准差在与牙齿年龄估计相关的不确定性范围在统计学上显著更大（p < 0.001）。得出的结论是，当呈现与未知年龄单个受试者牙齿年龄估计“均值”的点估计相关的不确定性时，在使用简单平均法进行单个牙齿年龄估计的计算中应纳入参考数据集中每个牙齿发育阶段的受试者数量。
