ON INVESTIGATION OF LONGITUDINAL MODELS UNDER THE UNBALANCED PANEL DATA FOR SMALL DATA SIZES INDUCED BY MISSINGNESS

Tables 1, 2, and 3 represent estimates of Mean Square Error (MSE) for different sample sizes (i.e., N = 20, 25, and 30), while Tables 4, 5, and 6 show estimates of Mean Absolute Error (MAE) for different sample sizes (i.e., N = 20, 25, and 30)表1、表2及表3呈现了样本量分别为N=20、25、30时的均方误差（Mean Square Error, MSE）估计值；表4、表5及表6则展示了样本量同样为N=20、25、30时的平均绝对误差（Mean Absolute Error, MAE）估计值。