A Randomized Controlled Trial of Airtime Incentives to Improve Short Message Service (SMS) Survey Performance in Colombia and Tanzania
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 2,151
- 试验地点
- 2
- 主要终点
- Cooperate Rate #1
研究概览
简要总结
This study evaluates the effect of four different airtime incentive amounts on short message service (SMS) survey cooperation, response, refusal and contact rates, as compared to control group, in Colombia and Tanzania.
详细描述
Using random digit dialing (RDD) sampling technique, participants were randomized to one of four airtime incentive amounts contingent on them completing the noncommunicable disease risk factor survey. This mobile phone survey will be sent as a short message service (SMS). In SMS surveys, participants use their touch tone key pad to answer written questions. (i.e. If you are male, press 1; If you are female, press 2). This study will be conducted in both Colombia and Tanzania.
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 (Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Access to a mobile phone
- •Greater or equal to 18 years of age
- •In Colombia, conversant in the Spanish language. In Tanzania, conversant in the Swahili language.
排除标准
- •Less than 18 years of age
结局指标
主要结局
Cooperate Rate #1
时间窗: Through study completion, an average of one month
As defined by American Association for Public Opinion Research, cooperation rate is defined as I/(I+P+R) where I is complete interviews, P is partial interviews, and R is refusals and breakoffs.
Response Rate #4
时间窗: Through study completion, an average of one month
As defined by American Association for Public Opinion Research, response rate is defined as (I+P)/(I+P+R+eU) where I is complete interviews, P is partial interviews, R is refusals and breakoffs, and eU is the estimated eligible proportion of unknowns.
次要结局
- Contact Rate #2(Through study completion, an average of one month)
- Refusal Rate #2(Through study completion, an average of one month)