Summers J, Price J H
Michigan State University Extension, East Lansing 48824, USA.
Psychol Rep. 1997 Oct;81(2):551-4. doi: 10.2466/pr0.1997.81.2.551.
This study indicated a combination of methods increased the return rate (80%) in a national survey of health educators (n = 546). Also, use of a $1.00 bill incentive was not significantly more effective than no incentive, and the rate of double responses in this anonymous mail survey was very low (1%).
这项研究表明,在一项针对健康教育工作者的全国性调查(n = 546)中,多种方法相结合提高了回复率(80%)。此外,使用一美元钞票作为激励措施并不比不提供激励显著更有效,并且在这项匿名邮件调查中双重回复的比例非常低(1%)。