评估胡萝卜奖励应用程序，一种基于人口层面激励的干预措施，促进加拿大两个卡塔尔世界杯8强波胆分析省的步数计算:准实验研究%A Mitchell,Marc %A White,Lauren %A Lau,Erica %A Leahey,Tricia %A Adams,Marc A %A Faulkner,Guy %+西方大学，萨默维尔大厦，2360C室，伦敦，ON, n6a5b9，加拿大，1 519 661 2111 ext 87936, marc.mitchell@uwo.ca %K行为经济学%K财务健康激励%K移动健康%K手机%K身体活动%K公共卫生%D 2018 %7 20.9.2018 %9原始论文%J JMIR移动健康Uhealth %G英文%X背景:胡萝卜奖励应用程序是一项创新的公私合作伙伴关系的一部分，旨在奖励加拿大人的忠诚积分，这些积分可以兑换零售商品、旅行奖励和杂货，以奖励他们从事健康的行为，如散步。目的:本研究考察了包括目标设定、分级任务、生物反馈和与每日步数目标实现相关的非常小的激励(通过内置智能手机加速度计评估)在内的多成分干预是否可以增加加拿大两个省(不列颠哥伦比亚省(BC)和纽芬兰和拉布拉多省(NL)的身体活动。方法:这项为期12周的准实验(单组前后)研究纳入78,882名参与者;在招募期间(2016年6月13日至7月10日)，有44.39%(35,014/78,882)的人参加了Carrot Rewards“Steps”步行计划。在两周的基线(或“磨合”)期间，我们计算参与者每天的平均步数。此后，参与者每天达到个性化的每日步数目标(即基线平均值+1000步=第一个每日步数目标水平)，就会获得忠诚度积分(价值0.04加元)的奖励。参与者如果在14天内非连续完成10次以上的步数目标(称为“step Up Challenge”)，就可以获得额外的积分(0.40加元)。在为期12周的评估期间，参与者可以获得高达5加元的收入。 Upon meeting the 10-day contingency, participants could increase their daily goal by 500 steps, aiming to gradually increase the daily step number by 3000. Only participants with ≥5 valid days (days with step counts: 1000-40,000) during the baseline period were included in the analysis (n=32,229).The primary study outcome was mean steps per day (by week), analyzed using linear mixed-effects models. Results: The mean age of 32,229 participants with valid baseline data was 33.7 (SD 11.6) years; 66.11% (21,306/32,229) were female. The mean daily step count at baseline was 6511.22. Over half of users (16,336/32,229, 50.69%) were categorized as “physically inactive,” accumulating <5000 daily steps at baseline. Results from mixed-effects models revealed statistically significant increases in mean daily step counts when comparing baseline with each study week (P<.001). Compared with baseline, participants walked 115.70 more steps (95% CI 74.59 to 156.81; P<.001) at study week 12. BC and NL users classified as “high engagers” (app engagement above sample median; 15,511/32,229, 48.13%) walked 738.70 (95% CI 673.81 to 803.54; P<.001) and 346.00 (95% CI 239.26 to 452.74; P<.001) more steps, respectively. Physically inactive, high engagers (7022/32,229, 21.08%) averaged an increase of 1224.66 steps per day (95% CI 1160.69 to 1288.63; P<.001). Effect sizes were modest. Conclusions: Providing very small but immediate rewards for personalized daily step goal achievement as part of a multicomponent intervention increased daily step counts on a population scale, especially for physically inactive individuals and individuals who engaged more with the walking program. Positive effects in both BC and NL provide evidence of replicability. %M 30148712 %R 10.2196/mhealth.9912 %U http://mhealth.www.mybigtv.com/2018/9/e178/ %U https://doi.org/10.2196/mhealth.9912 %U http://www.ncbi.nlm.nih.gov/pubmed/30148712