Another instance that is closely associated with this phenomenon is the recent trend of multicentre studies.
Ioannidis (2005) explains that ‘negative’ research is useful and, in fact, it is a misnomer to classify it as negative. Therefore, it should be understood that statistical inference only tells us about the range of the truth within the data that has been observed. Part of the reason for this is also because the difference between inferential and descriptive use of statistics is often blurred, and could be mistaken by novice epidemiologists. A significant part of the statistical estimate is based on the assumption that the correct statistical model is estimated. The predominant reason for this practice is the widespread notion among academics that “statistically significant data is noteworthy, and one that is not statistically significant is not”. We may use these term interchangeably in the discussion below. Data dredging is recognized by several names such as ‘fishing trip’, ‘data snooping’, ‘p-hacking’ and so on. This may lead to an exponential increase in the risk of inclusion of large quantities of false positive results, thereby corrupting the data that was meant to be originally reported. Impact of data dredging on epidemiologyĭata dredging is defined as “cherry-picking of promising findings leading to a spurious excess of statistically significant results in published or unpublished literature”.The following discussion will attempt to define data dredging and provide an answer to such questions. Software description provided by the publisher.What is data dredging? How does it affect the p-value? What is its impact on the world around us? Fight the Unfathomable: Strengthen your mind and use your abilities to survive trips out on the water after dark.Fish to Survive: Sell your discoveries to the locals to learn more about each area, and upgrade your boat to reach even more secluded locations.Study Your Craft: Research special equipment and upgrade your boat’s capabilities to gain access to rare fish and valuable deep-sea curios.
Dredge the Depths: Scour the sea for hidden treasures and complete quests to gain access to strange new abilities.Unravel a Mystery: Captain your fishing trawler across a collection of remote islands, each with its own inhabitants to meet, wildlife to discover, and stories to unearth.You might not like what finds you in the dark. Outfit your boat with better equipment to trawl deep-sea trenches and navigate to far-off lands but keep an eye on the time. Sell your catch to the locals and complete quests to learn more about each area’s troubled past.
Captain your fishing trawler to explore a collection of remote isles, and their surrounding depths, to see what lies below.
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