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Factors affecting response rates to natural resource-focused mail surveys: empirical evidence of declining rates over time

机译:影响以自然资源为中心的邮件调查的回复率的因素:随着时间的流逝下降的经验证据

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摘要

We analyzed factors that could affect response rates for 105 mail surveys conducted by the Human Dimensions Research Unit at Cornell University between 1971 and 2000. The surveys addressed diverse natural resource-based topics and involved a varietyof study populations. We tested the null hypothesis that response rates to natural resource--focused mail surveys are not changing over time. We found the best multiple regression model (adjusted R~2 = .558) to explain differences in response rates incorporated five independent variables: (1) saliency of study topic, to surveyed population, (2) the month of the first mailing, (3) the size (font) of print type, (4) the number of complex questions included in the survey, and (5) year of survey implementation. All other variables held constant, the model suggests that response rates dropped on average 0.77 percent per year over the 30-year period. The scatterplot of response rate versus time suggests a gradual decline in response rates over time.
机译:我们分析了可能影响1971年至2000年间康奈尔大学人文维度研究小组进行的105封邮件调查的答复率的因素。这些调查涉及多种基于自然资源的主题,涉及各种研究人群。我们检验了零假设,即针对自然资源的邮件调查的回复率不会随时间变化。我们发现了最好的多元回归模型(调整后的R〜2 = .558)来解释包含五个独立变量的回应率差异:(1)研究主题对被调查人群的显着性;(2)首次寄出邮件的月份;( 3)打印类型的大小(字体),(4)调查中包含的复杂问题的数量,以及(5)调查实施的年份。所有其他变量保持不变,该模型表明,在30年期间,响应率平均每年下降0.77%。响应速度随时间变化的散点图表明响应速度随时间逐渐下降。

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