一项随机试验，比较在互联网减肥项目中人际电子邮件咨询、计算机自动定制咨询和不咨询这三种方式。

A randomized trial comparing human e-mail counseling, computer-automated tailored counseling, and no counseling in an Internet weight loss program.

作者信息

Tate Deborah F, Jackvony Elizabeth H, Wing Rena R

机构信息

Schools of Public Health and Medicine, Department of Health Behavior and Health Education, University of North Carolina, Chapel Hill, NC 27599, USA.

出版信息

Arch Intern Med. 2006;166(15):1620-5. doi: 10.1001/archinte.166.15.1620.

DOI:10.1001/archinte.166.15.1620

PMID:16908795

Abstract

BACKGROUND

Several studies have shown that e-mail counseling improves weight loss achieved in self-directed Internet programs. Computer-tailored feedback offers a population-based alternative to human e-mail counseling.

METHODS

One hundred ninety-two adults, aged 49.2 +/- 9.8 years, having a body mass index (calculated as weight in kilograms divided by height in meters squared) of 32.7 +/- 3.5, were randomized to 1 of 3 Internet treatment groups: No counseling, computer-automated feedback, or human e-mail counseling. All participants received 1 weight loss group session, coupons for meal replacements, and access to an interactive Web site. The human e-mail counseling and computer-automated feedback groups also had access to an electronic diary and message board. The human e-mail counseling group received weekly e-mail feedback from a counselor, and the computer-automated feedback group received automated, tailored messages.

RESULTS

Retention was 82% at 3 months and 80% at 6 months for all 3 groups. At 3 months, completers in both the computer-automated feedback (-5.3 +/- 4.2 kg) and human e-mail counseling (-6.1 +/- 3.9 kg) groups had significantly greater weight losses compared with the no counseling group (-2.8 +/- 3.5 kg) and these groups did not differ from each other. At 6 months, weight losses were significantly greater in the human e-mail counseling group (-7.3 +/- 6.2 kg) than in the computer-automated feedback (-4.9 +/- 5.9 kg) or no counseling (-2.6 +/- 5.7 kg) groups. Intent-to-treat analyses using single or multiple imputation techniques showed the same pattern of significance.

CONCLUSIONS

Providing automated computer-tailored feedback in an Internet weight loss program was as effective as human e-mail counseling at 3 months. Further research is needed to improve the efficacy of automated computer-tailored feedback as a population-based weight loss approach.

摘要

背景

多项研究表明，电子邮件咨询可提高自我指导的互联网减肥计划中的减肥效果。计算机定制反馈为基于人群的电子邮件咨询提供了一种替代方式。

方法

192名年龄在49.2±9.8岁、体重指数（以千克为单位的体重除以米的平方后的身高计算）为32.7±3.5 的成年人被随机分为3个互联网治疗组之一：无咨询、计算机自动反馈或人工电子邮件咨询。所有参与者都参加了1次减肥小组会议，获得了代餐优惠券，并可访问一个交互式网站。人工电子邮件咨询组和计算机自动反馈组还可以使用电子日记和留言板。人工电子邮件咨询组每周收到来自咨询师的电子邮件反馈，计算机自动反馈组收到自动定制的信息。

结果

3组在3个月时的保留率为82%，6个月时为80%。3个月时，计算机自动反馈组（-5.3±4.2千克）和人工电子邮件咨询组（-6.1±3.9千克）的完成者的体重减轻幅度明显大于无咨询组（-2.8±3.5千克），且这两组之间没有差异。6个月时，人工电子邮件咨询组（-7.3±6.2千克）的体重减轻幅度明显大于计算机自动反馈组（-4.9±5.9千克）或无咨询组（-2.6±5.7千克）。使用单一或多重插补技术的意向性分析显示了相同的显著性模式。