190 Works

CRAWDAD dataset tools/sanitize/generic/AnonTool (v. 2006-09-26)

D. Koukis, Spiros Antonatos, Demetris Antoniades, E. P. Markatos, P. Trimintzios & Michalis Fukarakis
AnonTool, an open-source implementation of Anonymization API, provides an easy to use, flexible and efficient library of functions that can be used to anonymize live traffic, or packet traces in libpcap file format. Currently, IP, TCP/UDP, HTTP, FTP and Netflow v5 and v9 are supported. Three ready-to-use applications have been implemented on top of this library; one provides basic anonymization functionality for the IP/TCP/UDP protocols, and two more which can perform anonymization on every field...

Exnovation of Low Value Care: A Decade of Prostate-Specific Antigen Screening Practices

Julie P.W. Bynum, Honor Passow, Don Carmichael & Jonathan Skinner
OBJECTIVES: To examine prostate-specific antigen (PSA) screening practice change in subgroups of men defined in guidelines and in various regions and to identify factors associated with change in screening practices. DESIGN: Observational study using serial cross-sections, 2003 to 2013. SETTING: National fee-for-service Medicare. PARTICIPANTS: Men aged 68 and older eligible for prostate cancer screening. MEASUREMENTS: National PSA screening practices in men aged 68 and older from 2003 to 2013 and change in regional screening rates...

CRAWDAD dataset hasselt/EDM (v. 2017-06-09)

Pieter Robyns, Bram Bonné, Peter Quax & Wim Lamotte
A complete collection of all management and control frames (including Radiotap headers) observed at our research lab from 28 January to 8 Febuary 2016. This dataset was used to calculate the "stability" and "variability" of Probe Request IEs (see our paper for more details on these metrics).

Assessing Variation in Implantable Cardioverter Defibrillator Therapy Guideline Adherence With Physician and Hospital Patient-sharing Networks

Erika L. Moen, Julie P.W. Bynum, Andrea Austin, Jonathan Skinner, Gouri Chakraborti & A. James O'Malley
BACKGROUND: Implantable cardioverter defibrillator (ICD) therapy is used for primary prevention of death among people with heart failure, and new evidence in 2005 on its effectiveness changed practice guidelines in the United States. OBJECTIVES: The objective of this study is to examine how the connectedness of physicians and hospitals, measured using network analysis, relates to guideline-consistent ICD implantation. RESEARCH DESIGN: We constructed physician and hospital networks for cardiovascular disease. Physicians were linked if they shared...

A comparative analysis of long-term mortality after carotid endarterectomy and carotid stenting.

Jesse A. Columbo, Pablo Martinez-Camblor, Todd A. MacKenzie, Kang Ravinder, Spencer W. Trooboff, Philip P. Goodney & A. James O'Malley
Background: The value of carotid intervention is predicated on long-term survival for patients to derive a stroke prevention benefit. Randomized trials report no significant difference in survival after carotid endarterectomy (CEA) vs carotid artery stenting (CAS), whereas observational studies of “real-world” outcomes note that CEA is associated with a survival advantage. Our objective was to examine long-term mortality after CEA vs CAS using a propensity-matched cohort. Methods: We studied all patients who underwent CEA or...

CRAWDAD dataset tools/analyze/802.11/Wit (v. 2006-09-29)

Ratul Mahajan, Maya Rodrig & John Zahorjan
Wit is a non-intrusive tool that builds on passive monitoring to analyze the detailed MAC-level behavior of operational wireless networks.

An analysis of patient-sharing physician networks and implantable cardioverter defibrillator therapy

Moen, Erica L. (The Dartmouth Institute For Health Policy And Clinical Practice, Geisel School Of Medicine At Dartmouth); Austin, Andrea M. (The Department Of Medicine, Geisel School Of Medicine At Dartmouth); Skinner, Jonathan S. (Department Of Economics, Dartmouth College); O'Malley, A. James (The Department Of Biomedical Data Science, Geisel School Of Medicine At Dartmouth); Bynum, Julie P. (The Dartmouth Institute For Health Policy And Clinical Practice, Geisel School Of Medicine At Dartmouth, The Department Of Medicine, Geisel School Of Medicine At Dartmouth)

CRAWDAD dataset kyutech/interference (v. 2015-06-16)

Marat Zhanikeev
The common wisdom tells one not to attach more than 5-10 wireless devices to an access point. This is a problem in wireless educational classes, one can get between 10 and 50 students in the same room. Such spaces are referred to as dense wireless networks. While there are several methods that can be used to deal with dense wireless environments, installing multiple APs and separating them by channel is arguably the most readily available...

Prices Don’t Drive Regional Medicare Spending Variations

Daniel J. Gottlieb, Weiping Zhou, Yunjie Song, Kathryn Gilman Andrews, Jonathan Skinner & Jason M. Sutherland
Per capita Medicare spending is more than twice as high in New York City and Miami than in places like Salem, Oregon. How much of these differences can be explained by Medicare’s paying more to compensate for the higher cost of goods and services in such areas? To answer this question, we analyzed Medicare spending after adjusting for local price differences in 306 Hospital Referral Regions. The priceadjustment analysis resulted in less variation in what...

CRAWDAD dataset dartmouth/campus (v. 2005-03-08)

David Kotz, Tristan Henderson, Ilya Abyzov & Jihwang Yeo
This dataset includes syslog, SNMP, and tcpdump data for 3 years or more, for over 450 access points and several thousand users at Dartmouth College.

Long-Term Implications Of A Short-Term Policy: Redacting Substance Abuse Data

Andrea M. Austin, Julie P.W. Bynum, Donovan T. Maust, Daniel J. Gottlieb & Ellen Meara
We used complete fee-for-service Medicare claims for 2012, the last year of claims available before redaction was implemented. To estimate the impact of redaction, we created a new version of the 2012 cohort by removing any claim that included a substance abuse–related diagnosis or procedure code that was redacted in 2013, as specified by the Research Data Assistance Center(ResDAC). Our analysis used the full 2012claims and the redacted version.We estimated the prevalence of thirteen chronic...

Replication Data for: Medicaid Expansion and Prescription Trends: Opioids, Addiction Therapies, and Other Drugs.

Benjamin A. Y. Cher, Nancy E. Morden & Ellen Meara
RESEARCH DESIGN: We analyzed the 2010-2016 Medicaid State Drug Utilization Data using a difference-in-differences regression approach, comparing prescriptions per enrollee between states that expanded Medicaid in 2014 and states that did not. We compared opioid pain relievers and opioid addiction therapies to 5 other commonly prescribed drug types important to the Medicaid expansion population (antidepressants, antihypertensives, diabetes medications, cholesterol treatments, and contraceptives) and to overall prescription volume. A secondary analysis compared opioid pain relievers and...

Association Between Medicare Expenditure Growth and Mortality Rates in Patients With Acute Myocardial Infarction A Comparison From 1999 Through 2014

Likosky, Donald S. (University Of Michigan); Van Parys, Jessica (Hunter College, New York, New York); Zhou, Weiping (The Dartmouth Institute For Health Policy And Clinical Practice, Geisel School Of Medicine At Dartmouth); Borden, William B. (The Dartmouth Institute For Health Policy And Clinical Practice, Geisel School Of Medicine At Dartmouth); Weinstein, Milton C. (Harvard T. H. Chan School Of Public Health); Skinner, Jonathan S. (The Dartmouth Institute For Health Policy And Clinical Practice, Geisel School Of Medicine At Dartmouth)

CRAWDAD dataset queensu/crowd_temperature (v. 2015-11-20)

Mohannad A. Alswailim, Hossam S. Hassanein & Mohammad Zulkernine
This dataset is to be used in conjunction with the roma/taxi dataset and provides the outdoor temperature of the areas in Rome where the taxis were located (289 taxicabs over 4 days).

CRAWDAD dataset tools/analyze/pcap/WScout (v. 2007-09-12)

Thomas Claveirole & Marcelo Dias De Amorim
WScout provides a PCAP traces visualizer that is able to work with huge traces (>10 GiB). Its goals are speed and low memory requirements. Despite its design being protocol-agnostic, it currently handles only Prism and IEEE 802.11 headers, hence its name.

Replication Data for: Trends in opioid use in commercially insured and Medicare Advantage populations in 2007-16: retrospective cohort study

Molly Moore Jeffery, Michael W. Hooten, Henry J. Henk, M. Fernanda Bellolio, Erik P. Hess, Ellen Meara, Joseph S. Ross & Nilay D. Shah
OBJECTIVE: To describe trends in the rate and daily dose of opioids used among commercial and Medicare Advantage beneficiaries from 2007 to 2016. DESIGN: Retrospective cohort study of administrative claims data. SETTING: National database of medical and pharmacy claims for commercially insured and Medicare Advantage beneficiaries in the United States. PARTICIPANTS: 48 million individuals with any period of insurance coverage between 1 January 2007 and 31 December 2016, including commercial beneficiaries, Medicare Advantage beneficiaries aged...

CRAWDAD dataset cambridge/haggle (v. 2009-05-29)

James Scott, Richard Gass, Jon Crowcroft, Pan Hui, Christophe Diot & Augustin Chaintreau
This data includes a number of traces of Bluetooth sightings by groups of users carrying small devices (iMotes) for a number of days - in office environments, conference environments, and city environments.

CRAWDAD dataset umass/diesel (v. 2008-10-21)

John Burgess, John Zahorjan, Ratul Mahajan, Brian Neil Levine, Aruna Balasubramanian, Arun Venkataramani, Yun Zhou, Bruce Croft, Nilanjan Banerjee, Mark Corner & Don Towsley
This dataset includes the real mobility and real transfers of the bus-based DTN (Disruption-tolerant-network) testbed, called UMassDieselNet, operating from the UMass Amherst campus and the surrounding county.

CRAWDAD dataset uprm/wireless (v. 2006-04-12)

Brian C. Donovan, Jim Kurose, Michael Zink, Adam Nyzio & Timothy Ireland
This data set contains a collection of wireless traces from the University of Puerto Rico. Wireless signal strength measurements for Dell and Thinkpad laptops were performed over distances of 500 feet and one mile. The data is presented in .cap files giving TCP dump packet headers.

Mandatory Medicare Bundled Payment Program for Lower Extremity Joint Replacement and Discharge to Institutional Postacute Care: Interim Analysis of the First Year of a 5-Year Randomized Trial.

Amy Finkelstein, Yunan Ji, Neale Mahoney & Jonathan Skinner
Importance: Bundled payments are an increasingly common alternative payment model for Medicare, yet there is limited evidence regarding their effectiveness. Objective: To report interim outcomes from the first year of implementation of a bundled payment model for lower extremity joint replacement (LEJR). Design, Setting, and Participants: As part of a 5-year, mandatory-participation randomized trial by the Centers for Medicare & Medicaid Services, eligible metropolitan statistical areas (MSAs) were randomized to the Comprehensive Care for Joint...

CRAWDAD dataset intel/home (v. 2006-04-16)

Konstantina Papagiannaki, Mark Yarvis & W. Steven Conner
Measurements reflect connectivity and UDP/TCP throughput data collected from a grid of six nodes placed within three different houses.

CRAWDAD dataset copelabs/usense (v. 2017-01-27)

S. Firdose, L. Lopes, W. Moreira, R. Sofia & P. Mendes
This dataset comprises experiments carried out with the open-source middleware NSense (fomerly named as USense), available at https://github.com/COPELABS-SITI/NSense. The data has been collected based on four sensors: bluetooth; Wi-Fi; microphone; accelerometer. NSense then relies on four different pipelines to compute aspects such as relative distance (Wi-Fi); social strength (based on bluetooth contact duration); sound activity level; motion. We set up experiments making use of Samsung Galaxy S3 devices. For each experiment, there is the following...

An analysis of patient-sharing physician networks and implantable cardioverter defibrillator therapy

Moen, Erica L. (The Dartmouth Institute For Health Policy And Clinical Practice, Geisel School Of Medicine At Dartmouth); Austin, Andrea M. (The Department Of Medicine, Geisel School Of Medicine At Dartmouth); Skinner, Jonathan S. (Department Of Economics, Dartmouth College); O'Malley, A. James (The Department Of Biomedical Data Science, Geisel School Of Medicine At Dartmouth); Bynum, Julie P. (The Dartmouth Institute For Health Policy And Clinical Practice, Geisel School Of Medicine At Dartmouth, The Department Of Medicine, Geisel School Of Medicine At Dartmouth)

CRAWDAD dataset umich/virgil (v. 2008-03-28)

Anthony J. Nicholson, David Wetherall, Yatin Chawathe, Mike Chen & Brian Noble
We collected the data set through war walking, i.e., collecting Wi-Fi beacons by walking around the neighborhoods in different cities in the United States, for the field study and evaluation of Virgil, an access point selection system.

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