Assessing neurosurgical trends in literature and online: a Google Trends, Google Books and PubMed study (Preprint)
BACKGROUND Google Books Ngram Viewer (Ngram) is an open online database of 5 million printed books where the frequency of words occurring in books can be analyzed over time. Google Trends is a tool that allows one to gauge popularity of search terms and topics over time. These tools have not yet been used together to assess the historical and current the trends in neurosurgery. OBJECTIVE To assess the neurosurgical trends in literature and online in the past and currently. METHODS Ngram, Google Trends and PubMed data were used to analyze the neurosurgical trends from 2004–2008. Next, Google Trends and PubMed data was obtained from 2018 to compare the data. The following keywords were searched on all three platforms: brain tumor, sciatica, neurosurgery, hydrocephalus and concussion. RESULTS Each platform had a characteristic interest in each topic. Online Google searches were most concerned with sciatica (62/100 worldwide), the scientific community with neurosurgery (7661 average yearly publications) and book authors wrote most about concussions (0.00013% worldwide Google One Million books). Sciatica held both the least scientific publications (129 average yearly publications) and one of the least mentions in printed books (0.000030% worldwide Google One Million books). The online and PubMed interest levels stayed the same from 2004 to 2018. However, concussion—which held one of the lowest online search interests from 2004 to 2008—had a major increase in 2018 online searches. CONCLUSIONS Ngram, Google Trends and PubMed data together provide valuable insights into the health interests among physicians and the public. It is crucial for neurosurgeons to be aware of historical trends as they offer vital insight on the driving factors in medicine today. Physicians can use this understanding to better align public and scientific concerns for the future, provide better patient education and raise awareness on issues that might be overlooked by the public.