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- Confounding factors(epidemiology) (1)
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Articles 1 - 5 of 5
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Evaluating Spatial Surveillance: Detection Of Known Outbreaks In Real Data, Ken Kleinman, Allyson Abrams, W. Katherine Yih, Richard Platt, Martin Kulldorff
Evaluating Spatial Surveillance: Detection Of Known Outbreaks In Real Data, Ken Kleinman, Allyson Abrams, W. Katherine Yih, Richard Platt, Martin Kulldorff
Public Health Department Faculty Publication Series
Since the anthrax attacks of October 2001 and the SARS outbreaks of recent years, there has been an increasing interest in developing surveillance systems to aid in the early detection of such illness. Systems have been established which do this is by monitoring primary health-care visits, pharmacy sales, absenteeism records, and other non-traditional sources of data. While many resources have been invested in establishing such systems, relatively little effort has as yet been expended in evaluating their performance.
One way to evaluate a given surveillance system is to compare the signals it generates with known outbreaks identified in other systems. …
Variation In Hepatitis B Immunization Coverage Rates Associated With Provider Practices After The Temporary Suspension Of The Birth Dose, Nancy D. Lin, Ken Kleinman, K Arnold Chan, Xian-Jie Yu, Eric K. France, Feifei Wei, John P. Mullooly, Steven Black, David Shay, Margarette Kolczak, Tracey Lieu, Vaccine Safety Datalink Team
Variation In Hepatitis B Immunization Coverage Rates Associated With Provider Practices After The Temporary Suspension Of The Birth Dose, Nancy D. Lin, Ken Kleinman, K Arnold Chan, Xian-Jie Yu, Eric K. France, Feifei Wei, John P. Mullooly, Steven Black, David Shay, Margarette Kolczak, Tracey Lieu, Vaccine Safety Datalink Team
Public Health Department Faculty Publication Series
Background
In 1999, the American Academy of Pediatrics and U.S. Public Health Service recommended suspending the birth dose of hepatitis B vaccine due to concerns about potential mercury exposure. A previous report found that overall national hepatitis B vaccination coverage rates decreased in association with the suspension. It is unknown whether this underimmunization occurred uniformly or was associated with how providers changed their practices for the timing of hepatitis B vaccine doses. We evaluate the impact of the birth dose suspension on underimmunization for the hepatitis B vaccine series among 24-month-olds in five large provider groups and describe provider practices …
Relationship Between Mechanisms And Activities At The Time Of Pedestrian Injury And Activity Limitation Among School Adolescents In Kathmandu, Nepal, Kalpana Poudel-Tandukar, Shinji Nakahara, Masao Ichikawa, Krishna Poudel-Tandukar, Susumu Wakai
Relationship Between Mechanisms And Activities At The Time Of Pedestrian Injury And Activity Limitation Among School Adolescents In Kathmandu, Nepal, Kalpana Poudel-Tandukar, Shinji Nakahara, Masao Ichikawa, Krishna Poudel-Tandukar, Susumu Wakai
Elaine Marieb College of Nursing Faculty Publication Series
This study assessed the relationship between pedestrian activity at the time of injury, the type of vehicle involved and resulting activity limitation among school adolescents in the Kathmandu and Lalitpur districts of Nepal. A cross-sectional study of 1557 students in grades 6–8 across 14 schools was conducted using a self-administered questionnaire from August to September 2003. Twenty-three percent of adolescents reported pedestrian injuries, 38% were from urban and 21% from semi-urban areas. Adolescents were commonly injured by motorcycles and motor vehicles while crossing the road; however, while walking and playing, they were commonly injured by bicycles and motorcycles. Bicycles and …
Four Different Study Designs To Evaluate Vaccine Safety Were Equally Validated With Contrasting Limitations, Jason M. Glanz, David L. Mcclure, Stanley Xu, Simon J. Hambidge, Martin Lee, Margarette S. Kolczak, Ken Kleinman, John P. Mullooly, Eric K. France
Four Different Study Designs To Evaluate Vaccine Safety Were Equally Validated With Contrasting Limitations, Jason M. Glanz, David L. Mcclure, Stanley Xu, Simon J. Hambidge, Martin Lee, Margarette S. Kolczak, Ken Kleinman, John P. Mullooly, Eric K. France
Public Health Department Faculty Publication Series
OBJECTIVE:
We conducted a simulation study to empirically compare four study designs [cohort, case-control, risk-interval, self-controlled case series (SCCS)] used to assess vaccine safety.
STUDY DESIGN AND METHODS:
Using Vaccine Safety Datalink data (a Centers for Disease Control and Prevention-funded project), we simulated 250 case sets of an acute illness within a cohort of vaccinated and unvaccinated children. We constructed the other three study designs from the cohort at three different incident rate ratios (IRRs, 2.00, 3.00, and 4.00), 15 levels of decreasing disease incidence, and two confounding levels (20%, 40%) for both fixed and seasonal confounding. Each of the …
Reaching Hard-To-Reach Migrants By Letters: An Hiv/Aids Awareness Programme In Nepal, Krishna Poudel, Masamine Jimba, Kalpana Poudel-Tandukar, Susume Wakai
Reaching Hard-To-Reach Migrants By Letters: An Hiv/Aids Awareness Programme In Nepal, Krishna Poudel, Masamine Jimba, Kalpana Poudel-Tandukar, Susume Wakai
Elaine Marieb College of Nursing Faculty Publication Series
We assessed the impact of an HIV/AIDS programme for Nepalese migrants to India that involved writing letters. The programme created opportunities for sending HIV/AIDS-related messages to the migrants in India, and encouraging them practicing safer sex. Initially, they received the messages only from the programme, but later from their colleagues, spouses or other family members. They discussed the messages in groups, disseminated them, and sought more knowledge in their destinations. These findings indicated that using letters could be an effective way to reach inaccessible migrants at their destinations, and help them to improve their HIV/AIDS-related knowledge, and safer sex practices.