Report on a special investigation of the City of Muscatine for the period July 1, 2008 through March 8, 2012

Report on a special investigation of the City of Muscatine for the period July 1, 2008 through March 8, 2012

Special investigation of the Iowa Department of Transportation for the period January 29, 1994 through July 7, 2011

Special investigation of the Iowa Department of Transportation for the period January 29, 1994 through July 7, 2011

Special investigation of the University of Northern Iowa Events Complex Concessions for the period October 1, 2006 through March 31, 2012

Special investigation of the University of Northern Iowa Events Complex Concessions for the period October 1, 2006 through March 31, 2012

Report on a special investigation of the City of Indianola for the period June 1, 2006 through August 31, 2012

Report on a special investigation of the City of Indianola for the period June 1, 2006 through August 31, 2012

Report on a special investigation of the Lyon County Engineer’s Office for the period August 1, 2006 through May 31, 2012

Report on a special investigation of the Lyon County Engineer’s Office for the period August 1, 2006 through May 31, 2012

Report on a special investigation of the Creston Water Works for the period July 1, 2005 through November 16, 2012

Report on a special investigation of the Creston Water Works for the period July 1, 2005 through November 16, 2012

EPI Update: Special Alert, July 3, 2013

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health. SPECIAL ALERT

EPI Update: Special Alert, July 8, 2013

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health. SPECIAL ALERT

Report on special investigation of the Department of Inspections and Appeals, Office of the State Public Defender, for the period August 31, 2007 through March 31, 2011

Report on a special investigation of the State Public Defender’s Office for the period August 31, 2007 through March 31, 2011

Final Report on the Portable Computerized Assessments of Sleepy Drivers in Operational Environments, June 29, 2011

Excessive daytime sleepiness underpins a large number of the reported motor vehicle crashes. Fair and accurate field measures are needed to identify at-risk drivers who have been identified as potentially driving in a sleep deprived state on the basis of erratic driving behavior. The purpose of this research study was to evaluate a set of cognitive tests that can assist Motor Vehicle Enforcement Officers on duty in identifying drivers who may be engaged in sleep impaired driving. Currently no gold standard test exists to judge sleepiness in the field. Previous research has shown that Psychomotor Vigilance Task (PVT) is sensitive to sleep deprivation. The first goal of the current study was to evaluate whether computerized tests of attention and memory, more brief than PVT, would be as sensitive to sleepiness effects. The second goal of the study was to evaluate whether objective and subjective indices of acute and cumulative sleepiness predicted cognitive performance. Findings showed that sleepiness effects were detected in three out of six tasks. Furthermore, PVT was the only task that showed a consistent slowing of both ‘best’, i.e. minimum, and ‘typical’ responses, median RT due to sleepiness. However, PVT failed to show significant associations with objective measures of sleep deprivation (number of hours awake). The findings indicate that sleepiness tests in the field have significant limitations. The findings clearly show that it will not be possible to set absolute performance thresholds to identify sleep-impaired drivers based on cognitive performance on any test. Cooperation with industry to adjust work and rest cycles, and incentives to comply with those regulations will be critical components of a broad policy to prevent sleepy truck drivers from getting on the road.

EPI Update: Special Alert, July 12, 2013

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health. SPECIAL ALERT

EPI Update: Special Alert, July 19, 2013

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health. SPECIAL ALERT

Report on special investigation of the City of Farmington for the period July 1, 2009 through November 30, 2012

Special investigation of the City of Farmington for the period July 1, 2009 through November 30, 2012

Report on a special investigation of the City of Grand River for the period July 1, 2004 through March 7, 2012

Report on a special investigation of the City of Grand River for the period July 1, 2004 through March 7, 2012

EPI Update: Special Alert, July 31, 2013

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health. SPECIAL ALERT