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Differences between opt-in and actively recruited participants in a research study

机译:参与研究的自愿参加者与参加者之间的差异

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To assess the differences between actively recruited and “opt-in” participants with respect to baseline characteristics and behaviors related to an intervention targeting TV habits, participants were compared on demographics, parental TV attitudes, child behavior, and amount of screen time. Statistically significantly larger proportions of active recruits were non-white, from a low-income family, more likely to have TVs in the bedroom, and on average, spent more time viewing frightening or violent TV content. Many characteristics are comparable between the two groups but there are some factors that had small but significant differences. It may be possible to rely on a modified passive recruitment approach where certain demographic groups are targeted and oversampled to approach a population that is comparable to an actively recruited study sample.
机译:为了评估主动招募和“选择加入”参与者之间在针对电视习惯的干预相关的基线特征和行为方面的差异,对参与者进行了人口统计学,父母电视态度,儿童行为和放映时间的比较。据统计,来自低收入家庭的活跃新兵中,非白人的比例更大,他们更有可能在卧室里看电视,并且平均来说,他们花更多的时间在看恐怖或暴力的电视内容。两组之间的许多特征都具有可比性,但有些因素差异很小但差异很大。可能有可能依赖于经过改进的被动招募方法,其中将某些人口群体作为目标并进行了过度抽样,以接近与主动招募的研究样本相当的人群。

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