Department of Anthropology, State University of New York College at Oneonta.
Southwest Foundation for Research and Education, San Antonio, Texas.
Am J Primatol. 1982;2(2):205-209. doi: 10.1002/ajp.1350020209.
Two regression methods are proposed for estimating age in nonhuman primates from deciduous dental eruption data. The first method consists of step-wise multiple regression using dental eruption state (present/absent) of each tooth as independent variables. The second method uses the total number of teeth erupted as an independent variable in an exponential model. We applied both methods to a sample of 175 well nourished infant and juvenile baboons (Papio sp.), housed in an outdoor breeding corral, and ranging in age from birth to 763 days. From this sample, 129 animals were used to compute the regression formulae, and 46 animals were used for cross validation. Both models show good overall fits and high predictive accuracy with the independent cross validation sample.
提出了两种从灵长类动物乳牙萌出数据估计年龄的回归方法。第一种方法包括使用每个牙齿的萌出状态（存在/缺失）作为自变量的逐步多元回归。第二种方法在指数模型中使用萌出的总牙齿数作为自变量。我们将这两种方法应用于一个由 175 只营养良好的婴儿和幼年狒狒（Papio sp.）组成的样本中，这些狒狒被安置在一个户外繁殖围栏中，年龄从出生到 763 天不等。从这个样本中，我们使用 129 只动物来计算回归公式，并用 46 只动物进行交叉验证。这两种模型在独立交叉验证样本中均显示出良好的整体拟合度和高预测准确性。
