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New study finds U.S. and Canada have lost more than 1 in 4 birds in past 50 years（图）
U.S. Canada lost birds past 50 years
2019/10/18
Since 1970, bird populations in the U.S. and Canada have declined by 29%, or almost 3 billion birds, signaling a widespread ecological crisis, a study published in the journal Science reveals. The res...
Predicting successful long-term weight loss from short-term weight-loss outcomes: new insights from a dynamic energy balance model (the POUNDS Lost study)
dynamic model energy balance receiver operating characteristic weight loss mathematical model likelihood function regression
2018/12/24
Background: Currently, early weight-loss predictions of long-term weight-loss success rely on fixed percent-weight-loss thresholds.