scholarly journals Using decision lists to construct interpretable and parsimonious treatment regimes

Biometrics ◽  
2015 ◽  
Vol 71 (4) ◽  
pp. 895-904 ◽  
Author(s):  
Yichi Zhang ◽  
Eric B. Laber ◽  
Anastasios Tsiatis ◽  
Marie Davidian
Keyword(s):  
Decision Lists ◽  
Treatment Regimes

Evaluation of aseptic loosening of knee prostheses by quantitative bone scintigraphy

2008 ◽  
Vol 47 (04) ◽  
pp. 163-166 ◽  
Author(s):  
D. Steiner ◽  
S. Laurich ◽  
R. Bauer ◽  
J. Kordelle ◽  
R. Klett
Keyword(s):  
Aseptic Loosening ◽  
Bone Scintigraphy ◽  
Revision Surgery ◽  
Predictive Value ◽  
Knee Prostheses ◽  
Treatment Regimes ◽  
Golden Standard ◽  
The Difference ◽  
Sensitivity Specificity ◽  
Asymptomatic Control

SummaryIn not infected knee prostheses bone scintigraphy is a possible method to diagnose mechanical loosening, and therefore, to affect treatment regimes in symptomatic patients. However, hitherto studies showed controversial results for the reliability of bone scintigraphy in diagnosing loosened knee prostheses by using asymptomatic control groups. Therefore, the aim of our study was to optimize the interpretation procedure and to evaluate the accuracy using results from revision surgery as standard. Methods: Retrospectively, we were able to examine the tibial component in 31 cemented prostheses. In this prostheses infection was excluded by histological or bacteriological examination during revision surgery. To quantify bone scintigraphy, we used medial and lateral tibial regions with a reference region from the contralateral femur. Results: To differentiate between loosened and intact prostheses we found a threshold of 5.0 for the maximum tibia to femur ratio of the both tibial regions and a threshold of 18% for the difference of the ratio of both tibial regions. Using these thresholds, values of 0.9, 1, 0.85, 1, and 0.94 were calculated for sensitivity, specificity, negative predictive value, positive predictive value, and accuracy, respectively. To get a sensitivity of 1, we found a lower threshold of 3.3 for the maximum tibia to femur ratio. Conclusion: Quantitative bone scintigraphy appears to be a reliable diagnostic tool for aseptic loosening of knee prostheses with thresholds evaluated by revision surgery results being the golden standard.

Capturing the surge of public interest towards Hydroxychloroquine, Azithromycin and BCG vaccine during COVID-19 Pandemic (Preprint)

2020 ◽  
Author(s):  
Shabbir Syed-Abdul ◽  
Shwetambara Malwade ◽  
Sim-Mei Choo
Keyword(s):  
Social Media ◽  
Preventive Measures ◽  
Healthcare Providers ◽  
Specific Treatment ◽  
Drug Effects ◽  
The United States ◽  
Bcg Vaccine ◽  
Public Interests ◽  
Treatment Regimes ◽  
Appropriate Treatment

UNSTRUCTURED The outbreak of COVID-19 that started in December 2019, was declared a pandemic in March 2020. Currently, there is no specific treatment recommended and healthcare providers are struggling to find appropriate treatment regimes. Medication misinformation spread through social media has caused panic situations and self-prescription leading to harmful drug effects. The situation worsened following false propaganda via social media, leading to shortage of some medications. Our study shows the frequency of search for the medications Hydroxychloroquine (HCQ), Azithromycin and Bacillus Calmette-Guérin (BCG) vaccine in Google Trends, across 6 countries. Public interests from the United States, Italy and Spain leaned towards HCQ, whereas those from Taiwan, Japan and South Korea were keen towards learning about the BCG vaccine. Our article aimed to inform the general public of the adverse drug reactions to avoid self-prescription or yield to the assumptions of leaders and unanimous social media posts. Proactive participation and preventive measures such as social distancing, use of face masks and hand sanitizers are recommended to help curb COVID-19 and other infections.

scholarly journals Lower Bounds on Learning Decision Lists and Trees

1996 ◽  
Vol 126 (2) ◽  
pp. 114-122 ◽  
Author(s):  
Thomas Hancock ◽  
Tao Jiang ◽  
Ming Li ◽  
John Tromp
Keyword(s):  
Lower Bounds ◽  
Decision Lists

scholarly journals On the isomorphism problem for decision trees and decision lists

2015 ◽  
Vol 590 ◽  
pp. 38-54 ◽  
Author(s):  
V. Arvind ◽  
Johannes Köbler ◽  
Sebastian Kuhnert ◽  
Gaurav Rattan ◽  
Yadu Vasudev
Keyword(s):  
Decision Trees ◽  
Isomorphism Problem ◽  
Decision Lists
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