题目内容
b>Conen et al., Caffeine consumption and incident atrial fibrillation (a heart rhythm disorder) in women Design: A total of 33,638 initially healthy women who participated in the Women's Health Study and who were greater than 45 years of age and free of cardiovascular disease and AF [atrial fibrillation] at baseline were prospectively followed for incident AF from 1993 to 2 March 2009. All women provided information on caffeine intake via food-frequency questionnaires at baseline and in 2004. What type of study does this design section describe?
查看答案
搜索结果不匹配？点我反馈
更多问题
b>Takahashi et al., Evaluating the preventive effect of cranberry juice Abstract: We examined the rate of relapse, as a variable index, in patients with urinary tract infection (UTI) who suffered from multiple relapses when using cranberry juice (UR65). A randomized, placebo-controlled, double-blind study was conducted from October 2007 to September 2009 in Japan. The subjects were outpatients aged 20 to 79 years who were randomly divided into two groups. One group received cranberry juice (group A) and the other a placebo beverage (group P). To keep the conditions blind, the color and taste of the beverages were adjusted. Based on the abstract, what type of study did the researchers implement?
b>Vartanian et al., Effects of soft drink consumption on nutrition and health Methods: We focused on research investigating the effects of sugar-sweetened beverages; diet and artificially sweetened beverages are noted only in certain cases for comparison purposes. We conducted a computer search through MEDLINE and PsycINFO using the key terms “soft drink,” “soda,” and “sweetened beverage.” We identified articles that assessed the association of soft drink consumption with 4 primary outcomes (energy intake, body weight, milk intake, and calcium intake) and 2 secondary outcomes (nutrition and health). We identified additional articles by searching each article’s reference section and the Web of Science database. Finally, we contacted the authors of each included article with a request for unpublished or in-press work, and we asked each author to forward our request to other researchers who might have relevant work. Our searches yielded a total of 88 articles that were included in the present analysis. What type of study design does this Methods section describe?
b>Simonin et al., Caffeine intake and age at onset in Huntington’s disease Abstract: To determine a possible relationship between caffeine consumption and age at onset (AAO) in HD, we retrospectively assessed caffeine consumption in 80 HD patients using a dietary survey and determined relationship with AAO. Following adjustment for gender, smoking status and CAG repeat length, caffeine consumption greater than 190mg/day was significantly associated with an earlier AAO. Based on the above description from the abstract, the study design used by the researchers was a:
Before watching the next video segment, here’s a quick trivia question that will shed light on the quantity of research produced annually.Approximately how many scientific research papers are published per year?
微信支付 
支付宝支付