Surface sampling methods for Bacillus anthracis spore contamination.
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During an investigation conducted December 17-20, 2001, we collected environmental samples from a U.S. postal facility in Washington, D.C., known to be extensively contaminated with Bacillus anthracis spores. Because methods for collecting and analyzing B. anthracis spores have not yet been validated, our objective was to compare the relative effectiveness of sampling methods used for collecting spores from contaminated surfaces. Comparison of wipe, wet and dry swab, and HEPA vacuum sock samples on nonporous surfaces indicated good agreement between results with HEPA vacuum and wipe samples. However, results from HEPA vacuum sock and wipe samples agreed poorly with the swab samples. Dry swabs failed to detect spores >75% of the time when they were detected by wipe and HEPA vacuum samples. Wipe samples collected after HEPA vacuum samples and HEPA vacuum samples collected after wipe samples indicated that neither method completely removed spores from the sampled surfaces. (+info)
Views of Directors of Public Health about NICE Appraisal Guidance: results of a postal survey. National Institute for Clinical Excellence.
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BACKGROUND: We aimed to determine the views of Directors of Public Health about the Health Technology Appraisal Programme of the National Institute for Clinical Excellence (NICE) before the move to strategic health authorities and primary care trusts in April 2002. METHOD: In December 2001 we sent a questionnaire asking about the work programme, products, decision-making, general approach, resource allocation and success of NICE to all Directors of Public Health in England and Wales. Ninety-two of 100 responded. RESULTS: Three-quarters or more agreed that NICE has covered a number of priority and controversial areas, produced good-quality health technology appraisals, well-presented reports and readable guidance in a consistent format, that it has raised the profile of clinical effectiveness, provided a focus for debate about health technology, and succeeded in making the National Health Service (NHS) set aside resources for approved technologies. A similar proportion, however, also agreed that guidance was not timely, did not address 'whole systems' and made some disappointing recommendations, and that decision-making was not influenced enough by the needs of the NHS. They considered that NICE did not address implementation, decide between competing technologies or help the service prioritization debate, and that guidance sent unrealistic signals about affordability to patients and politicians and caused difficulty for the implementation of other technologies locally. CONCLUSIONS: A majority of Directors are positive about NICE's role of providing high-quality appraisal and central guidance but negative about its influence on local priority setting. Major concerns remain about the affordability of competing demands, whether this is NICE's responsibility or not. (+info)
Repeat chlamydia screening by mail, San Francisco.
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OBJECTIVES: To assess the feasibility and acceptability of home screening for repeat chlamydial infection using urine test kits sent through the mail. METHODS: A letter offering home rescreening was mailed to 399 adults who previously tested positive for chlamydia. Kits were then mailed to anyone who did not actively decline. The home testing kits contained instructions on how to collect a urine specimen and return the specimen by mail. Specimens were tested with strand displacement amplification. A short survey asked individuals their level of concern about confidentiality, safety, and privacy of mail screening. RESULTS: Among the 313 potential test kit recipients, 22.4% responded. Response rates were highest among homosexual and bisexual men (38.6%), people 35 years or older (34.3%), and white people (34.6%). The overall positivity rate was 3.2% (2/63). In women 18-25 years old, the positivity was 13.3% (2/15). CONCLUSIONS: Home testing with mailed urine collection kits is feasible and an acceptable method to screen for recurrent chlamydial infection. Young women would probably benefit most because of their higher rates of reinfection and risk for sequelae. (+info)
Effects of sterilizing gamma irradiation on bloodspot newborn screening tests and whole blood cyclosporine and tacrolimus measurements.
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Sterilizing irradiation of the US mail has been proposed as a method to prevent delivery of viable anthrax spores. Because newborn screening samples (bloodspots) and cyclosporine and tacrolimus specimens (whole blood) are delivered routinely through the mail, we studied whether sterilizing gamma irradiation could affect these test results. Specimens were exposed to 18 kGy gamma irradiation (100 hours x 18,000 rad/h), a "kill dose" for Bacillus pumilus spore strips. Irradiation had no significant effect on whole blood cyclosporine or tacrolimus results, but it had a degradative effect on bloodspot phenylalanine, hemoglobins, biotinidase, galactose-1-phosphate uridyltransferase, thyroxine, and thyrotropin. Such irradiation potentially could cause false-negative results for the detection of phenylketonuria and likely would lead to an increase in secondary testing for hemoglobin variants, but it is unlikely to lead to false-negative or false-positive results for the remaining newborn screening tests. These experiments cannot rule out possible greater effects by larger doses or other types of irradiation. (+info)
An audit of job application forms in response to adverts in the British Medical Journal.
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OBJECTIVE: The aim of this study was to examine the speed of response of human resources departments to requests for job application forms for posts advertised in the British Medical Journal (BMJ). Of particular interest was the closing date for applications, postage cost, and the period to reply. DESIGN: Twenty posts were randomly selected and application forms requested by telephone and then 20 by letter on two separate dates from the BMJ Classified (issues of 21 July 2001 and 28 July 2001). During the first week the forms were requested by telephone on receipt of the BMJ (Friday afternoon). During the second week the forms were requested by first class post. All letters were sent out on Saturday morning. OUTCOME MEASURES: The date of receipt of the application form/information pack, the cost of postage, and the closing date for application were recorded for each position. RESULTS: Fifteen forms were received after the telephone application and 18 forms after the letter applications. One trust sent two replies spaced one week apart for the same job and two replies contained job application forms for the wrong job. The response rates to telephone requests varied from four to 10 days and by letter from three to 12 days. The minimum time between the reply being received and the closing date was one day, and the maximum 21 days. The time between the closing date for applications and the start date of the job varied from minus one week (closing date before advertisement) to three months. Thirteen replies gave no indication of the start date of the job. The cost of postage varied from 27p to pound 1.90. Thirty one trusts used first class postage. CONCLUSION: There is very limited scope to return job application forms on time, and significant delays in sending out application forms and information packs compound this problem. It is recommended that trust human resources departments place advertisements early and respond promptly to requests for application forms. (+info)
Dietary advice in clinical practice: the views of general practitioners in Europe.
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BACKGROUND: General practitioners (GPs) can promote good nutrition to patients and advise them about desirable dietary practices for specific conditions. OBJECTIVE: The objective was to assess GPs' knowledge and attitudes in implementing preventive and health promotion activities and to describe tools used by European GPs in advising patients about dietary practices. DESIGN: A postal survey was mailed to 1976 GPs from 10 GP national colleges to obtain information about beliefs and attitudes in prevention and health promotion, and an e-mail survey was sent to 15 GPs representing national colleges to obtain information about dietary guidelines. RESULTS: In the postal survey, 45% of GPs reported estimating body mass in clinical practice, and 60% reported advising overweight patients to lose weight. Fifty-eight percent answered that they felt minimally effective or ineffective in helping patients achieve or maintain normal weight. In the e-mail survey, only 4 colleges out of 15 reported that they had published their own dietary tools, although 10 out of 15 answered that GPs use some nutritional/dietary recommendations in the office when seeing patients. Eleven out of 15 answered that both the nurse and the GP advise patients about dietary practices, with 4 answering that GPs were the only ones who advise patients. Only 5 delegates answered that they can refer their patients to trained nutrition specialists. CONCLUSIONS: GPs think that obesity is not easy to handle in practice. Most GPs have dietary tools in the office and think that nurses play an important role in advising patients. (+info)
Randomized trial of financial incentives and delivery methods for improving response to a mailed questionnaire.
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In a follow-up study, only 64% of 126,628 US radiologic technologists completed a questionnaire during 1994-1997 after two mailings. The authors conducted a randomized trial of financial incentives and delivery methods to identify the least costly approach for increasing overall participation. They randomly selected nine samples of 300 nonresponders each to receive combinations of no, 1.00 US dollar, 2.00 US dollars, and 5.00 US dollars cash or check incentives delivered by first-class mail or Federal Express. Federal Express delivery did not achieve greater participation than first-class mail (23.2% vs. 23.7%). In analyses pooled across delivery methods, the response was significantly greater for the 2.00 US dollar bill (28.9%, 95% confidence interval (CI): 25.2, 32.7; p < 0.0001), 5.00 US dollars check (27.5%, 95% CI: 22.5, 33.0; p = 0.0001), 1.00 US dollar bill (24.6%, 95% CI: 21.2, 28.3; p = 0.0007), and 2.00 US dollars check (21.8%, 95% CI: 18.5, 25.3; p = 0.02) compared with no incentive (16.6%, 95% CI: 13.7, 19.9). The response increased significantly with increasing incentive amounts from 0.00 to 2.00 US dollars cash (p trend < 0.0001). The 2.00 US dollar bill achieved a 30% greater response than did a 2.00 US dollars check (p = 0.005). For incentives sent by first-class mail, the 5.00 US dollars check yielded 30% greater participation than did the 2.00 US dollars check (p = 0.07). A 1.00 US dollar bill, chosen instead of the 2.00 US dollars bill because of substantially lower overall cost and sent by first-class mail to the remaining 42,717 nonresponders, increased response from 64% to 72%. (+info)
Using geographic information systems to assess risk for elevated blood lead levels in children.
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OBJECTIVES: Targeted screening for childhood lead poisoning depends on assessment of risk factors including housing age. Using a geographic information system (GIS), we aim to determine high-risk regions in Charleston County, South Carolina, to assist public health officials in developing targeted lead-screening. METHODS: Properties built before 1978 were geocoded (assigned latitude and longitude coordinates) from tax assessor data. Addresses of Charleston County children who have been screened for lead poisoning were also geocoded. Locations of all housing, lead poisoning cases, and negative screens were created as separate map layers. Prevalence ratios of lead poisoning cases were calculated, as were relative risks for each category of housing. RESULTS: Maps of Charleston County were produced showing the location of old housing, where screening took place, and where cases were found. One thousand forty-four cases were identified. Twenty percent of children living in pre-1950 homes had elevated blood lead levels (EBLL). Children living in pre-1950 housing were 3.9 times more likely to have an EBLL than children living in post-1977 housing. There was no difference in risk of living in a 1950-1977 home vs. a post-1977 home. A large number of cases were also found in an area of newer houses, but near a potential point source. Eighty-two percent of all screens were from children in post-1977 homes. CONCLUSIONS: Children living in pre-1950 housing were at higher risk for lead poisoning. GIS is useful in identifying areas of risk and unexpected clustering from potential point sources and may be useful for public health officials in developing targeted screening programs. (+info)