中文摘要：

对成组数据下加速失效模型的回归参数提出一种光滑估计方法.设计一种重抽样方法估计渐近协方差阵,并进行了数值模拟计算.结果表明,在一定条件下,所提出的估计量是相合的且具有渐近正态性.

英文摘要：

The authors proposed a smoothing estimation for regression parameters in the accelerated failure time model for clustered data.Under certain conditions,the proposed estimator is consistent and asymptotically normal.We designed a resampling method to estimate the asymptotic covariance matrix.