| York University: Statistics Seminar |

| | When interest lies in **estimating** the survival distribution, from onset, of subjects with the disease, one must take into account that the survival times of the cases identified in such a study are left truncated or length-biased; the long survivors tend to be those cases identified at the start of the study. |

| | When **estimating** parameters from historical data, often only the closing prices, close and open prices are used in the **estimation** of parameters and the subsequent analysis, although information on the extremes of the process is highly informative, particularly of the changes in volatility. |

| | A simple **estimation** method is proposed under the proportional hazards model for the regression analysis of such studies when the times of the occurrences of the two events defining the elapsed time are right- or interval-censored. |

| www.math.yorku.ca /Seminars/statistics (13408 words) |