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转自医咖会,本文做了部分补充
后台回复：“NEJM胖三斤”即可下载全文！
每逢佳节胖三斤？仔细一瞧三公斤！！！
十一国庆长假到，咱们一起来回顾下NEJM上的这篇与节日有关的文章吧^_^ 
研究方法 
来自NEJM，2016 sep 22; 375:1200-2 
我们再看看部分原文： The daily weight of each person was normalized by first subtracting their starting weight at the beginning of August and dividing by their average weight over the year. The resulting weight-change curve was smoothed over a 7-day running-average window, subtracted by a linear trend, and averaged over all the participants in each country. We used a two-sided, paired Student’s t-test to assess whether the maximum weight at no more than 10 days after the start of the holiday differed from the weight that was measured 10 days before the holiday. In all three countries, the participants’ weight rose within 10 days after Christmas Day, as compared with 10 days before Christmas Day (weight increases of 0.4% in the United States, P<0.001; 0.6% in Germany, P<0.001; and 0.5% in Japan, P=0.005). Significant weight gain was also observed around other major holidays in each country: participants’ weight increased by 0.3% in Japan during Golden Week (P<0.001), 0.2% in Germany during the Easter holiday (P<0.001), and 0.2% in the United States during the Thanksgiving holiday (P<0.001). Overall, from the minimum annual weight (Figure 1), weight increased by 0.7% (0.6 kg) in the participants from the United States and 1.0% (0.8 kg) in those from Germany during the Christmas–New Year holiday season and 0.7% (0.5 kg) in participants from Japan during Golden Week.
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