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Abstracts (PDF file, 1.8MB) - Society for Risk Analysis

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SRA 2013 Annual Meeting <strong>Abstracts</strong><br />

P.138 Kuiken, T*; Quadros, M; Woodrow Wilson Center,<br />

Virginia Tech; todd.kuiken@wilsoncenter.org<br />

Keeping track of nanotechnology in your everyday life:<br />

The Nanotechnology Consumer Products Inventory 2.0<br />

The Woodrow Wilson International Center <strong>for</strong> Scholars and the<br />

Project on Emerging Nanotechnologies created the<br />

Nanotechnology Consumer Product Inventory (CPI), in 2005.<br />

This first-of-its-kind inventory tracks consumer products<br />

claiming to contain nanomaterials and has become one of the<br />

most frequently cited resources showcasing the widespread<br />

applications of nanotechnology. The CPI now contains 1,628<br />

consumer products that have been introduced to the market<br />

since 2005, representing a 24 percent increase since the last<br />

update in 2010. In the years since its launch, the CPI has been<br />

criticized because of its lack of scientific data. To address some<br />

of these concerns, this update adds qualitative and quantitative<br />

descriptors, such as size, concentration, and potential exposure<br />

routes <strong>for</strong> the nanomaterial’s contained in consumer products.<br />

It also includes published scientific data related to those<br />

products, where available, and adds a metric to assess the<br />

reliability of the data on each entry. In addition, the newly<br />

re-launched inventory seeks to address scientific uncertainty<br />

with contributions from those involved with nanomaterial<br />

production, use, and analysis. This is the first major overhaul of<br />

the inventory, since it was launched in 2005. The re-launched<br />

inventory seeks to “crowd source” expertise in an ef<strong>for</strong>t to<br />

create an inventory with more accurate in<strong>for</strong>mation on<br />

consumer products. Registered users are encouraged to submit<br />

relevant data pertaining to nanoparticle function, location, and<br />

properties; potential exposure pathways; toxicity; and lifecycle<br />

assessment, as well as add product data and in<strong>for</strong>mation on<br />

new products. The Virginia Tech Center <strong>for</strong> Sustainable<br />

Nanotechnology worked with the Wilson Center to redevelop<br />

the inventory to improve the reliability, functionality, and<br />

scientific credibility of this database. Virginia Tech’s Institute<br />

<strong>for</strong> Critical Technology and Applied Science provided funding<br />

<strong>for</strong> the ef<strong>for</strong>t.<br />

P.89 Kumagai, Y*; Hosono, H; Sekizaki, T; the University of<br />

Tokyo; 2791388998@mail.ecc.u-tokyo.ac.jp<br />

This is the title; Investigating “consumer awareness” in<br />

evaluating food safety hazards related to beef in Japan<br />

In an emergency situation, effective risk communication may<br />

reduce unnecessary public concern and consequential<br />

behaviors. In 2011, Japan has two crisis events <strong>for</strong> beef-related<br />

health hazards (enterohemorrhagic Escherichia coli O111 and<br />

O157 and radioactive contamination) in the area of food safety.<br />

In this situation, Japanese consumers become increasingly<br />

aware of the risks of health hazards related to beef. The aim of<br />

this study is to investigate “consumer awareness” made an<br />

influence on evaluating health hazards in an emergency<br />

situation. We conducted the internet-based questionnaire<br />

survey on October in 2011. The survey had 3,957 respondents.<br />

The following subjects were asked about; (1)where each health<br />

hazard related to beef (“enterohemorrhagic E. coli (EHEC)”,<br />

“Salmonella spp.”, “Campylobacter spp.” “bovine spongi<strong>for</strong>m<br />

encephalopathy (BSE)”, “radioactive substances”, “antibiotic<br />

residues”, and ”cloned animal”) was ranked in descending<br />

order of risks, (2)the reasons why respondents chose the<br />

highest health hazard. We analyzed the words into free<br />

descriptions of the reasons, categorized the words into 8 broad<br />

types (“severity”, “probability of occurrences”, “anxiety and<br />

fear”, “adverse effects <strong>for</strong> infants”, “reliability of governmental<br />

management”, “avoidance by oneself”, “attention to media”,<br />

and “production of are”) as “consumer awareness” and<br />

explored factors made an influence on evaluating health<br />

hazards. In the result, “consumer awareness” in risk ranking<br />

was confirmed as follows; (1)regarding EHEC and Salmonella<br />

spp., “severity”, “probability of occurrence”, and “anxiety and<br />

fear”, (2)regarding BSE, “anxiety and fear”, “severity” and<br />

“avoidance by oneself”, (3)regarding radioactive substances,<br />

“reliability of governmental management”, “anxiety and fear”,<br />

“attention to media” and “adverse effect <strong>for</strong> infants”. The result<br />

of this study implied that “reliability of governmental<br />

management” is very important factor <strong>for</strong> emerging hazards<br />

like radioactive substances.<br />

T2-D.1 Kundu, A; University of Cali<strong>for</strong>nia, Davis;<br />

akundu@ucdavis.edu<br />

ESTIMATING RISK OF INTESTINAL NEMATODE<br />

INFECTION FROM EXPOSURE TO AMBIENT WATERS<br />

USING QUANTITATIVE MICROBIAL RISK ASSESSMENT<br />

(QMRA) IN SALTA, ARGENTINA<br />

The main objectives of this research were to establish risks<br />

related to (i) direct or indirect incidental ingestion of water in<br />

Arenales river in three scenarios: primary contact, children and<br />

secondary contact; (ii) consumption of uncooked vegetables<br />

irrigated with A. lumbricoides contaminated water; and (iii)<br />

incidental ingestion of irrigated water by farmers working in<br />

the fields. The study area focused on the Arias-Arenales river,<br />

which is in the northwestern region of Salta province in<br />

Argentina. Eleven locations on the Arenales river were selected<br />

<strong>for</strong> a thirteen-month monitoring study. A quantitative microbial<br />

risk assessment (QMRA), based on observed nematode density,<br />

was per<strong>for</strong>med to calculate the annual probability of helminth<br />

infection in various scenarios associated with direct or indirect<br />

exposure to Ascaris lumbricoides in surface waters. The highest<br />

estimated mean risk from direct or indirect ingestion of surface<br />

water per person per year (pppy) from a single exposure<br />

scenario was found in children (21.23%), followed by adults<br />

(12.49%) and secondary exposure (1.54%). We estimated the<br />

mean annual risks from consumption of raw (uncooked and<br />

unpeeled) vegetables irrigated with polluted water as a worst<br />

case scenario. The mean risk was highest in lettuce (0.659%)<br />

and lowest in cucumber (0.011%) <strong>for</strong> the total population. A<br />

similar pattern was found <strong>for</strong> the consumer-only population as<br />

well. Here, the risks from consumption of vegetables were<br />

0.27% <strong>for</strong> cucumbers and 1.54% <strong>for</strong> lettuce. The annual risk of<br />

infection in farmers due to accidental ingestion of irrigated<br />

water was 1.06%. The risk varied from as low as 0.005% to a<br />

high value of 41% in farmers working in the field without using<br />

any protective clothing like gloves, rain boots and so <strong>for</strong>th. We<br />

also estimated risks associated with four scenarios <strong>for</strong> treating<br />

left-censored observations: (i) one-half the detection limit (DL)<br />

was assumed <strong>for</strong> the censored data; (ii) DL was assumed <strong>for</strong><br />

censored data; (iii) bounding <strong>for</strong> the censored observations; and<br />

(iv) observations with zeroes.<br />

P.88 Kuroda, Y*; Iwamitsu, Y; Takemura, K; Ban, N; Sakura, O;<br />

Sakata, N; Tsubono, K; Nakagawa, K; The University of Tokyo,<br />

Kitasato University, and Waseda University;<br />

kuroday-rad@h.u-tokyo.ac.jp<br />

Effect of in<strong>for</strong>mation trustworthiness on cancer risk<br />

perception after a nuclear disaster<br />

This study examines the effect of trustworthiness on risk<br />

perception in residents of Tokyo and Fukushima after the<br />

Fukushima Daiichi nuclear disaster. A cross-sectional study was<br />

conducted among 2000 residents of Tokyo and Fukushima<br />

(1000 per city), selected by stratified random sampling.<br />

Participants anonymously filled out a questionnaire on 8 cancer<br />

risk factors: Smoking, Drinking, Poor Diet and Lack of Exercise,<br />

Obesity, Stress, Food Additives, Low Vegetable Consumption,<br />

and Radiation Exposure. From these 8 factors, participants<br />

were asked to select and rank the top3 (1=highest risk). They<br />

also rated their trustworthiness in sources of in<strong>for</strong>mation about<br />

radiation on a 5-point scale (1 = Not Reliable, 5 = Reliable).<br />

This study was approved by the Institutional Review Board at<br />

the University of Tokyo. Responses were obtained from 554<br />

participants from Fukushima (mean age = 52.8 ± 16.3 y) and<br />

465 participants from Tokyo (mean age = 51.6 ± 15.8 y).<br />

Participants from both cities rated Smoking (40.7%), Radiation<br />

Exposure (31.5%), and Stress (17.7%) as factors with highest<br />

risks <strong>for</strong> cancer. Radiation was rated significantly higher as a<br />

risk factor by participants from Fukushima than participants<br />

from Tokyo (X2 = 6.21, df=1, p < .01). Sources of in<strong>for</strong>mation<br />

about radiation were classified as “Reliable” (score of 5 or 4)<br />

and “Unreliable” (scores of 3, 2, or 1). A chi-square test<br />

revealed that those receiving in<strong>for</strong>mation from an unreliable<br />

source were more likely to report radiation as a higher risk<br />

factor (X2 = 6.81, df=1, p < .01). Trustworthiness is<br />

significantly related to perception of radiation risk; thus,<br />

building trustworthiness is the key issue to address <strong>for</strong> effective<br />

radiation risk communication.<br />

December 8-11, 2013 - Baltimore, MD

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