Contacting Authors to Retrieve Individual Patient Data: Protocol for a Randomized Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 129
- 主要终点
- Proportion of Authors Who Provided Complete IPD
研究概览
简要总结
The objective of this study is to examine the impact of incentivizing authors of RCTs that are eligible for a systematic review and meta-analysis, versus usual contact strategies to obtain original IPD
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Single (Investigator)
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Corresponding authors of RCTs included in our previous and updated systematic reviews
排除标准
- 未提供
研究组 & 干预措施
No Incentive
Those allocated to the control group will be contacted by email, mail, and phone, but will not receive a financial incentive
Incentive
Those allocated to the intervention group will be contacted by email, mail, and phone, and will be asked to provide the IPD from their RCT and they will be given a financial incentive.
干预措施: Financial Incentive (Other)
结局指标
主要结局
Proportion of Authors Who Provided Complete IPD
时间窗: June 2016 - October 2016
We contacted authors of eligible studies from June 2016 to October 2016. Authors were first contacted in June 2016, where we sent: a) an email requesting their IPD, b) email reminders (4 in total) at 2, 6, 10, and 14-week intervals after the initial email, c) reminders by post in week 7, and d) reminders via telephone in week 15.
次要结局
- Time Taken to Obtain the IPD Between Initial Request and Authors' Provision(June 2016 - October 2016)
- The Completeness of the IPD Received(June 2016 - October 2016)