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Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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The issues and trends in healthcare delivery are constantly changing. The COVID-19 pandemic is one recent issue that wreaked havoc on healthcare systems, causing a shortage of healthcare workers, high demand for medicines and supplies, and increased medical expenditure due to a lack of insurance. Other issues include rising healthcare costs and care fragmentation.
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Survival analysis is a statistical method used to study time-to-event data, where the "event" might represent outcomes like death, disease relapse, system failure, or recovery. A unique feature of survival data is censoring, which occurs when the event of interest has not been observed for some individuals during the study period. This requires specialized techniques to handle incomplete data effectively.
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The actuarial approach, a statistical method originally developed for life insurance risk assessment, is widely used to calculate survival rates in clinical and population studies. This method accounts for participants lost to follow-up or those who die from causes unrelated to the study, ensuring a more accurate representation of survival probabilities.
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Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
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Twitter Usage Among Physicians From 2016 to 2020: Algorithm Development and Longitudinal Analysis Study.

Keisuke Nakagawa1,2, Nuen Tsang Yang3, Machelle Wilson3

  • 1Department of Psychiatry and Behavioral Sciences, University of California, Davis School of Medicine, Sacramento, CA, United States.

Journal of Medical Internet Research
|September 6, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed a reliable method to identify US physicians on Twitter. Physician activity on the platform doubled over five years, with topics ranging from general health to COVID-19.

Keywords:
Twitterhealth informaticsinternetinternet usephysicianpublic healthsocial media

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Area of Science:

  • Social Media Analysis
  • Medical Informatics
  • Public Health Communication

Background:

  • Physicians increasingly use Twitter for professional and public communication.
  • Identifying physicians on Twitter is challenging due to varied self-identification methods.
  • This study introduces a novel, reproducible methodology for physician identification on Twitter.

Purpose of the Study:

  • To develop a reliable and repeatable methodology for identifying US physicians on Twitter.
  • To characterize the longitudinal activity of US physicians on Twitter over a five-year period.
  • To analyze physician tweeting activity, topics, and account types.

Main Methods:

  • A custom-built algorithm was developed to screen Twitter data (2016-2020) for physician identifiers.
  • Physician accounts were identified through Twitter handles, user profiles, and tweet content.
  • Tweet volume, popular hashtags, and topic categorization were analyzed.

Main Results:

  • Over 39,000 US physician accounts were identified from 6.4 million tweets.
  • The number of US physicians actively tweeting more than doubled (112% increase) over five years.
  • Key topics included general health, medical education, and mental health, with surges in election, Black Lives Matter, and COVID-19 related tweets in specific years.

Conclusions:

  • Twitter is a significant and evolving communication platform for US physicians.
  • The developed methodology accurately identifies physicians on Twitter.
  • Physician activity spans diverse topics, reflecting engagement with science, politics, and social issues.