Boys Annabel, Marsden John, Stillwell Garry, Hatchings Kevin, Griffiths Paul, Farrell Michael
National Addiction Centre, Institute of Psychiatry, King's College London, Addiction Sciences Building, 4 Windsor Walk, London SE5 8AF, UK.
J Adolesc. 2003 Jun;26(3):363-73. doi: 10.1016/s0140-1971(03)00011-3.
The methods used to maximize retention in a longitudinal study of adolescent drinking are discussed. Data were collected at three time points: at recruitment to the study, after nine months and at 18 months. Strategies to minimize attrition included the collection of detailed contact information, incentives for participation, postcard and telephone reminders and telephone interviews. Ninety-six percent of the original sample completed the first follow-up questionnaire, 92% completed the second and the study lost contact with just 3% of participants. The success of the current project is notable as this type of population is notoriously difficult to retain in longitudinal studies.
本文讨论了在一项关于青少年饮酒的纵向研究中用于最大限度提高留存率的方法。数据在三个时间点收集：研究招募时、九个月后以及18个月时。尽量减少损耗的策略包括收集详细的联系信息、参与激励、明信片和电话提醒以及电话访谈。原始样本中的96%完成了第一份随访问卷，92%完成了第二份，该研究仅与3%的参与者失去了联系。当前项目的成功值得注意，因为这类人群在纵向研究中极难留存。
