| 摘要 |
The aim of this invention is to increase the efficiency, precision and rapidity of a sample survey so that it becomes an accessible instrument and easy to use by a large number of institutions. Furthermore, the sample survey method must guarantee a random choice of individuals to be polled according to predefined criteria always maintaining said individuals' anonymity. This aim is reached by an opinion poll method of subscribers to an operator's (OP) mobile telephone network carried out by an institute (IS), characterized by the following steps: select a group of telephone numbers provided by the mobile telephone network operator (OP) relating to subscribers complying with predefined criteria, choose randomly a number of fixed numbers among those selected previously, transmit numerically a sample survey request (RQA) to previously selected numbers followed by sample survey data, receive and memorize, in the mobile telephone (MO) complying with the selected number, the sample survey data, determine the ideal moment to present the sample survey to the mobile telephone user, authenticate the user, receive the answers to the sample survey questions (REP), transmit, store and record the answers (REP) according to the predefined criteria.
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