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1.
Eur J Radiol ; 154: 110416, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35803102

RESUMO

PURPOSE: To systematically review studies on the effectiveness of supplementary imaging for breast cancer screening in women with dense breasts. MATERIALS AND METHODS: A systematic search of peer-reviewed publications in English (January 2000 to March 2021) was carried out. Eight databases were used to retrieve the studies: MEDLINE, CINAHL, Cochrane Central Register of Controlled Trials, Cochrane Clinical Answers, Cochrane Database of Systematic Reviews, Cochrane Methodology Register, PubMed, and Web of Science. Two radiographers and an academic independently reviewed the articles to determine if the studies met inclusion criteria. Study quality was assessed using the Quality Assessment of Diagnostic Accuracy Studies-2 tool. Summary estimates of diagnostic accuracy were obtained by using proportion and diagnostic metanalysis. RESULTS: From 3764 studies that underwent title and abstract screening, 221 studies underwent full-text screening. Of these 42 were included in the qualitative and quantitative synthesis. Results for sensitivity, specificity, positive and negative predictive values, cancer detection rates, recall and biopsy rates in women with dense breasts undergoing supplementary imaging were reported. Studies included in this review were heterogeneous, as was the proportion of women undergoing prevalence and incidence screening rounds. CONCLUSIONS: Supplementary screening among women with dense breasts who had recent negative mammograms can consistently identify additional cancers and lead to further recalls and biopsies.


Assuntos
Neoplasias da Mama , Mamografia , Densidade da Mama , Neoplasias da Mama/patologia , Detecção Precoce de Câncer/métodos , Feminino , Humanos , Mamografia/métodos , Programas de Rastreamento/métodos
2.
Br J Clin Pharmacol ; 85(5): 1028-1034, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30740763

RESUMO

Temporal patterns of acetaminophen use exceeding the recommended daily maximum dosage of 4 g over a 5-year period (4/1/2011-3/31/2016) were evaluated in an online 1-week diary study of 14 434 adult acetaminophen users who also reported acetaminophen use in the previous month. Specific medications taken were identified by list-based prompting; respondents were not required to know their medications contained acetaminophen. Details of use were recorded daily; total daily dosage was determined programmatically. Prevalence of >4 g use over time was modelled and tested for linear changes. The overall prevalence of >4 g use (6.3% of users and 3.7% of usage days) did not change over the 5 years: odds ratio (OR) persons, 1.02 (95% CI, 0.98-1.09); OR days, 0.98 (0.92-1.05). Deviations from label directions were largely unchanged, though concomitant use increased slightly. Thus, over a recent 5-year period, there was no evidence of change in how often acetaminophen use exceeded the labelled maximum daily dose.


Assuntos
Acetaminofen/administração & dosagem , Analgésicos não Narcóticos/administração & dosagem , Overdose de Drogas/epidemiologia , Medicamentos sem Prescrição/administração & dosagem , Dados de Saúde Gerados pelo Paciente/tendências , Adulto , Diários como Assunto , Rotulagem de Medicamentos , Monitoramento Epidemiológico , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Intervenção Baseada em Internet/estatística & dados numéricos , Intervenção Baseada em Internet/tendências , Masculino , Pessoa de Meia-Idade , Dados de Saúde Gerados pelo Paciente/estatística & dados numéricos , Prevalência , Autorrelato/estatística & dados numéricos , Estados Unidos/epidemiologia
3.
J Am Pharm Assoc (2003) ; 58(5): 492-498, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30041852

RESUMO

OBJECTIVES: Users should know the active ingredients and dosing directions to optimize the safe use of acetaminophen-containing medications. The aim of this work was to examine knowledge of acetaminophen-containing medication directions among current users. DESIGN, SETTING, AND PARTICIPANTS: An Internet panel diary study (2012-2016) of 1-week usage of acetaminophen medications (over-the-counter [OTC] and prescription), recorded daily; 9629 participants. Users were asked about ingredients of medications taken; specific dosing instructions were asked for each OTC medication taken. Subjects were considered to be correct only if an accurate response was provided for all of the medications they used. OUTCOME MEASURES: Analyses examined prevalence of several aspects of knowledge and their relation to the corresponding deviations from directions. Knowledge that acetaminophen was an ingredient was compared between medication types. RESULTS: Two-thirds of 5161 participants who used only 1 acetaminophen medication knew the ingredient; the proportion was almost halved in 4468 users of 2 or more. Ingredient knowledge was highest for single-ingredient medications (74%); for combination medications it ranged from 39% (cough or cold) to 61% (sleep or other non-pain). About one-third knew the prohibition against concomitant use of multiple acetaminophen medications; 85% knew the maximum one-time OTC dose, but only 47% knew the minimum interval between doses. Correct knowledge was inversely associated with violating the relevant label directions; in particular, knowing the one-time dose decreased the odds of taking too much at one time fivefold. Knowing both the ingredient and the concomitant use prohibition decreased the odds of concomitant use by 50%. CONCLUSIONS: Knowledge of directions for safe use of acetaminophen-containing medications is poor, and its deficiency is associated with corresponding deviations from label instructions. This study demonstrates a need for education about safe use of acetaminophen-containing medications, particularly for combination products.


Assuntos
Acetaminofen/administração & dosagem , Analgésicos não Narcóticos/administração & dosagem , Conhecimentos, Atitudes e Prática em Saúde , Combinação de Medicamentos , Rotulagem de Medicamentos , Overdose de Drogas/prevenção & controle , Feminino , Humanos , Internet , Masculino , Medicamentos sem Prescrição/administração & dosagem
4.
J Am Pharm Assoc (2003) ; 58(5): 499-504, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30030041

RESUMO

OBJECTIVES: To assess whether there are differences in the likelihood of exceeding the daily limit of 4 grams of acetaminophen when using different formulations (325 mg, 500 mg, 650 mg) of OTC single-ingredient (SI) acetaminophen medications. DESIGN AND SETTING: Multiyear observational study of acetaminophen use via daily online acetaminophen-usage diaries completed for 7 days. PARTICIPANTS: A total of 7579 U.S. adults from online research panels who used acetaminophen in the month preceding enrollment and used an OTC SI acetaminophen medication during the study. OUTCOME MEASURE: Exceeding the daily dose. RESULTS: On days when 325-mg or 500-mg OTC SI formulations were taken, users were not significantly more likely to exceed 4 grams than on days when OTC SI formulations were not used. On days when 650-mg extended-release (ER) formulations were taken, exceeding 4 grams was significantly more likely (8.9% of days vs. 4.4%; P < 0.0001; median on those days was 5.2 g) than on days with 325- or 500-mg OTC SI formulations. Users of 650-mg ER formulations were significantly less likely to know their dosing interval of 8 hours (33% vs. 49%; P < 0.0001) and more likely to redose too soon (26% vs. 10%; P < 0.0001) and to use other acetaminophen medications concomitantly (14% vs. 7%; P < 0.0001). These patterns were strongest among 650-mg ER products that did not include "8-Hour" in the product name. CONCLUSION: Usage of 500-mg OTC SI acetaminophen formulations does not contribute differently to exceeding dosage compared with other OTC SI acetaminophen formulations. Exceeding 4 grams is more likely when 650-mg ER formulations are used. Improved consumer information on the packages and counseling from pharmacists may help to reduce practices that contribute to exceeding the labeled daily limit of these medications.


Assuntos
Acetaminofen/administração & dosagem , Analgésicos não Narcóticos/administração & dosagem , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Rotulagem de Medicamentos , Overdose de Drogas/prevenção & controle , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Medicamentos sem Prescrição/administração & dosagem , Adulto Jovem
5.
Br J Clin Pharmacol ; 84(6): 1250-1257, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29516533

RESUMO

AIMS: To estimate prevalence of excess intake of paracetamol and investigate seasonal variations therein. METHODS: Between 2011 and 2016, 14 481 US adults who used paracetamol in the preceding 30 days were sampled from national online panels and completed a detailed online daily diary of paracetamol medication use for 7 days. Respondents were not told that the study concerned paracetamol. Cold/flu season (CFS), identified using Google Trends data, was contrasted to off-season in symptoms, use of paracetamol medications, and consumption exceeding 4 g (the recommended daily maximum). RESULTS: Overall, 6.3% [95% confidence interval: 5.9-6.7%] of users exceeded 4 g on at least one day; 3.7% [3.5-3.8%] of usage days exceeded 4 g. Cold/flu symptoms were more likely to be experienced and treated with paracetamol in CFS than off-season. Paracetamol users were more likely to exceed 4 g during CFS (6.5% vs. 5.3%; odds ratio = 1.24, 1.04-1.48); days exceeding 4 g also increased (3.9% vs. 2.8%; odds ratio = 1.37, 1.11-1.69). This was not due to differences in characteristics of individuals using paracetamol in CFS, but primarily to increased use of over-the-counter combination medications designed to treat upper respiratory cold/flu symptoms (33.2% of usage days in CFS vs. 24.8% in off-season; odds ratio = 1.58, 1.46-1.72). When such medications were omitted, there was no statistically significant seasonal variation in exceeding 4 g. CONCLUSIONS: Paracetamol use and over-dosing increases in CFS, primarily due to increased use of over-the-counter combinations treating upper respiratory cold/flu symptoms. Pharmacists should warn users to follow labelled dosing directions, especially during CFS.


Assuntos
Acetaminofen/administração & dosagem , Analgésicos não Narcóticos/administração & dosagem , Resfriado Comum/tratamento farmacológico , Uso Indevido de Medicamentos , Influenza Humana/tratamento farmacológico , Medicamentos sem Prescrição/administração & dosagem , Medicamentos sob Prescrição/administração & dosagem , Estações do Ano , Acetaminofen/efeitos adversos , Analgésicos não Narcóticos/efeitos adversos , Resfriado Comum/diagnóstico , Resfriado Comum/epidemiologia , Relação Dose-Resposta a Droga , Cálculos da Dosagem de Medicamento , Rotulagem de Medicamentos , Humanos , Influenza Humana/diagnóstico , Influenza Humana/epidemiologia , Medicamentos sem Prescrição/efeitos adversos , Uso Indevido de Medicamentos sob Prescrição , Medicamentos sob Prescrição/efeitos adversos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Estados Unidos/epidemiologia
6.
Pharmacoepidemiol Drug Saf ; 27(3): 322-331, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29372579

RESUMO

PURPOSE: Nonsteroidal anti-inflammatory drugs (NSAIDs) are effective and very commonly used, but also have side effects. We determined prevalence of NSAID dosing exceeding the daily limit (EDL) and identified related user characteristics and dosing patterns among current ibuprofen users. METHODS: Online 1-week diary study of 1326 ibuprofen users. NSAIDs were identified by list-based prompting; respondents were not required to know their medications were NSAIDs. Details of hourly use were recorded by respondents daily. Deviations from dosing directions were programmatically determined afterwards. An exit survey obtained information on demographics, medical history, physical and mental health status, attitudes regarding label reading and dosing behavior, and knowledge of product label instructions. RESULTS: Most diary users (90%) took over-the-counter ibuprofen during the week; 37% also took non-ibuprofen NSAIDs. Most did not recognize all products taken as NSAIDs. EDL occurred among 11% of users for ibuprofen, 4% of users for other NSAIDs, and on 9.1% of NSAID usage days. EDL was associated with deviations from detailed dosing directions, particularly exceeding the 1-time dose, which occurred more often with medications with 1-pill doses. Personal characteristics associated with EDL included male sex, ongoing pain, poor physical function, daily smoking, having the attitudes of "choosing my own dose" and not starting with the lowest dose, and poor knowledge of the recommended 1-time and 24-hour doses. CONCLUSIONS: The prevalence of EDL among NSAID users is nontrivial, and it is associated with potentially modifiable factors. Educating consumers about NSAIDs and their dosing directions could reduce excess dosing.


Assuntos
Anti-Inflamatórios não Esteroides/administração & dosagem , Ibuprofeno/administração & dosagem , Medicamentos sem Prescrição/administração & dosagem , Dor/tratamento farmacológico , Adulto , Anti-Inflamatórios não Esteroides/efeitos adversos , Relação Dose-Resposta a Droga , Feminino , Humanos , Ibuprofeno/efeitos adversos , Masculino , Pessoa de Meia-Idade , Medicamentos sem Prescrição/efeitos adversos , Educação de Pacientes como Assunto , Prevalência , Estudos Prospectivos , Inquéritos e Questionários/estatística & dados numéricos
7.
Br J Radiol ; 90(1075): 20160871, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28508724

RESUMO

OBJECTIVE: Motion blur is a known phenomenon in full-field digital mammography, but the impact on lesion detection is unknown. This is the first study to investigate detection performance with varying magnitudes of simulated motion blur. METHODS: 7 observers (15 ± 5 years' reporting experience) evaluated 248 cases (62 containing malignant masses, 62 containing malignant microcalcifications and 124 normal cases) for 3 conditions: no blurring (0 mm) and 2 magnitudes of simulated blurring (0.7 and 1.5 mm). Abnormal cases were biopsy proven. Mathematical simulation was used to provide a pixel shift in order to simulate motion blur. A free-response observer study was conducted to compare lesion detection performance for the three conditions. The equally weighted jackknife alternative free-response receiver operating characteristic was used as the figure of merit. Test alpha was set at 0.05 to control probability of Type I error. RESULTS: The equally weighted jackknife alternative free-response receiver operating characteristic analysis found a statistically significant difference in lesion detection performance for both masses [F(2,22) = 6.01, p = 0.0084] and microcalcifications [F(2,49) = 23.14, p < 0.0001]. The figures of merit reduced as the magnitude of simulated blurring increased. Statistical differences were found between some of the pairs investigated for the detection of masses (0.0 vs 0.7 and 0.0 vs 1.5 mm) and all pairs for microcalcifications (0.0 vs 0.7, 0.0 vs 1.5 and 0.7 vs 1.5 mm). No difference was detected between 0.7 and 1.5 mm for masses. CONCLUSION: The mathematical simulation of motion blur caused a statistically significant reduction in lesion detection performance. These false-negative decisions could have implications for clinical practice. Advances in knowledge: This research demonstrates for the first time that motion blur has a negative and statistically significant impact on lesion detection performance in digital mammography.


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Mamografia/métodos , Movimento (Física) , Interpretação de Imagem Radiográfica Assistida por Computador/métodos , Feminino , Humanos , Matemática , Variações Dependentes do Observador
8.
J Empir Res Hum Res Ethics ; 12(3): 150-160, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-28535711

RESUMO

Proposals for research concerning fetal and/or placental tissue may be refused institutional review board (IRB) review, effectively preventing the research from occurring. We conducted an anonymous electronic survey of IRB chairs to determine their assessment of the likely response to research projects using fetal/placental tissue obtained from various procedures. We found that proposals concerning tissue obtained from diagnostic procedures or miscarriage were anticipated to be considered at most institutions. Tissue obtained after abortion was likely to be refused consideration by more than 25% of respondents. Additional consultation during review was anticipated for up to 30% of scenarios. Responses for fetal and placental tissue were similar. The most frequently anticipated reason for refusal was institutional policy.


Assuntos
Pesquisa Biomédica/ética , Revisão Ética , Comitês de Ética em Pesquisa , Feto , Placenta , Obtenção de Tecidos e Órgãos , Aborto Induzido , Aborto Espontâneo , Técnicas e Procedimentos Diagnósticos , Ética em Pesquisa , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Políticas , Gravidez , Inquéritos e Questionários
9.
Br J Radiol ; 90(1071): 20160271, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28134567

RESUMO

OBJECTIVE: Blurred images in full-field digital mammography are a problem in the UK Breast Screening Programme. Technical recalls may be due to blurring not being seen on lower resolution monitors used for review. This study assesses the visual detection of blurring on a 2.3-MP monitor and a 5-MP report grade monitor and proposes an observer standard for the visual detection of blurring on a 5-MP reporting grade monitor. METHODS: 28 observers assessed 120 images for blurring; 20 images had no blurring present, whereas 100 images had blurring imposed through mathematical simulation at 0.2, 0.4, 0.6, 0.8 and 1.0 mm levels of motion. Technical recall rate for both monitors and angular size at each level of motion were calculated. χ2 tests were used to test whether significant differences in blurring detection existed between 2.3- and 5-MP monitors. RESULTS: The technical recall rate for 2.3- and 5-MP monitors are 20.3% and 9.1%, respectively. The angular size for 0.2- to 1-mm motion varied from 55 to 275 arc s. The minimum amount of motion for visual detection of blurring in this study is 0.4 mm. For 0.2-mm simulated motion, there was no significant difference [χ2 (1, N = 1095) = 1.61, p = 0.20] in blurring detection between the 2.3- and 5-MP monitors. CONCLUSION: According to this study, monitors ≤2.3 MP are not suitable for technical review of full-field digital mammography images for the detection of blur. Advances in knowledge: This research proposes the first observer standard for the visual detection of blurring.


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Mamografia/métodos , Mama/diagnóstico por imagem , Feminino , Humanos , Variações Dependentes do Observador , Reprodutibilidade dos Testes , Reino Unido
10.
Med Phys ; 43(6): 2870-2876, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27277035

RESUMO

PURPOSE: Mammographic density has been demonstrated to predict breast cancer risk. It has been proposed that it could be used for stratifying screening pathways and recommending additional imaging. Volumetric density tools use the recorded compressed breast thickness (CBT) of the breast measured at the x-ray unit in their calculation; however, the accuracy of the recorded thickness can vary. The aim of this study was to investigate whether inaccuracies in recorded CBT impact upon volumetric density classification and to examine whether the current quality control (QC) standard is sufficient for assessing mammographic density. METHODS: Raw data from 52 digital screening mammograms were included in the study. For each image, the clinically recorded CBT was artificially increased and decreased in increments of 1 mm to simulate measurement error, until ±15% from the recorded CBT was reached. New images were created for each 1 mm step in thickness resulting in a total of 974 images which then had volpara density grade (VDG) and volumetric density percentage assigned. RESULTS: A change in VDG was observed in 38.5% (n = 20) of mammograms when applying ±15% error to the recorded CBT and 11.5% (n = 6) was within the QC standard prescribed error of ±5 mm. CONCLUSIONS: The current QC standard of ±5 mm error in recorded CBT creates the potential for error in mammographic density measurement. This may lead to inaccurate classification of mammographic density. The current QC standard for assessing mammographic density should be reconsidered.

11.
Br J Radiol ; 89(1059): 20150715, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26739577

RESUMO

OBJECTIVE: To measure paddle motion during the clamping phase of a breast phantom for a range of machine/paddle combinations. METHODS: A deformable breast phantom was used to simulate a female breast. 12 mammography machines from three manufacturers with 22 flexible and 20 fixed paddles were evaluated. Vertical motion at the paddle was measured using two calibrated linear potentiometers. For each paddle, the motion in millimetres was recorded every 0.5 s for 40 s, while the phantom was compressed with 80 N. Independent t-tests were used to determine differences in paddle motion between flexible and fixed, small and large, GE Senographe Essential (General Electric Medical Systems, Milwaukee, WI) and Hologic Selenia Dimensions paddles (Hologic, Bedford, MA). Paddle tilt in the medial-lateral plane for each machine/paddle combination was calculated. RESULTS: All machine/paddle combinations demonstrate highest levels of motion during the first 10 s of the clamping phase. The least motion is 0.17 ± 0.05 mm/10 s (n = 20) and the most motion is 0.51 ± 0.15 mm/10 s (n = 80). There is a statistical difference in paddle motion between fixed and flexible (p < 0.001), GE Senographe Essential and Hologic Selenia Dimensions paddles (p < 0.001). Paddle tilt in the medial-lateral plane is independent of time and varied from 0.04 ° to 0.69 °. CONCLUSION: All machine/paddle combinations exhibited motion and tilting, and the extent varied with machine and paddle sizes and types. ADVANCES IN KNOWLEDGE: This research suggests that image blurring will likely be clinically insignificant 4 s or more after the clamping phase commences.


Assuntos
Mamografia/instrumentação , Movimento (Física) , Imagens de Fantasmas , Constrição , Feminino , Humanos
12.
Am J Prev Med ; 50(6): e183-e190, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26689980

RESUMO

INTRODUCTION: Acetaminophen is a commonly used analgesic/antipyretic; overdoses can lead to liver damage. Little is known about the relationship of health literacy to exceeding the recommended maximum daily dose (4 g). METHODS: Subjects were recruited at 23 U.S. malls in 2011. Health literacy was measured by Rapid Estimate of Adult Literacy in Medicine (REALM), classified as very low (VLL, score <45); low (LL, 45-60); or adequate (AL, >60). Participants completed a 7-day acetaminophen use diary by daily telephone interview; an exit interview covered demographics, physical/mental health, medical history, medication label reading, and medication-taking knowledge/attitudes. Acetaminophen products were identified from a comprehensive list; subjects were not required to know their medications contained acetaminophen. Seven hundred fifty-six subjects aged ≥18 years had taken acetaminophen in the past 30 days and completed 7 diary days with ≥1 day of acetaminophen use, plus the exit survey. Analysis was conducted in 2012-2014. RESULTS: VLL were more likely than AL individuals to exceed 4 g on ≥1 day (OR [95% CI]=3.8 [1.5, 9.6]; 4.0 [1.3, 12] after controlling for five REALM score-related factors). On usage days, VLL individuals were also more likely to exceed 4 g (3.3 [1.1, 10], by generalized estimating equations; 2.4 [0.9, 6.6], direct effect after accounting for mediation by other deviations from label recommendations). CONCLUSIONS: VLL individuals exceed the recommended maximum acetaminophen dose more often than AL individuals. Other identified characteristics related to health literacy do not explain this, but it is partly mediated by increased frequency of other label deviations.


Assuntos
Acetaminofen/administração & dosagem , Analgésicos não Narcóticos/administração & dosagem , Rotulagem de Medicamentos/normas , Overdose de Drogas , Letramento em Saúde/estatística & dados numéricos , Acetaminofen/intoxicação , Adulto , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Inquéritos e Questionários , Estados Unidos
13.
Pharmacoepidemiol Drug Saf ; 24(9): 915-21, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26149538

RESUMO

BACKGROUND: Acetaminophen overuse has been linked to liver injury. PURPOSE: To identify patterns of medication use associated with exceeding the recommended daily maximum dose of 4 g acetaminophen. METHODS: Respondents from a national panel completed a detailed daily medication diary online for 7 days (n = 5649), identifying medications taken from a comprehensive list of over-the-counter (OTC) and prescription (Rx) acetaminophen medications. Respondents were not told the study concerned acetaminophen. Total daily intake was calculated from diary data. Generalized estimating equations assessed the association of medication patterns with exceeding 4 g per day among 3618 respondents who used acetaminophen medications (on 13,852 days) during the diary period. RESULTS: Acetaminophen intake exceeded 4 g on 3.1% of usage days; median intake on those days was 5.5 g. As expected, days when intake exceeded 4 g were almost always (92%) marked by deviations from label directions-exceeding the one-time dose, re-dosing too soon, and concomitant use of multiple acetaminophen medications. Re-dosing too soon was the most frequent deviation, and concomitant use was most strongly tied to exceeding the daily limit. Use of both an Rx and an OTC medication on the same day also increased the odds of exceeding 4 g on days when concomitant use occurred. CONCLUSIONS: Excess dosing of acetaminophen is associated with deviations from label directions and by use of both OTC and Rx medications containing acetaminophen within a single concomitant use day.


Assuntos
Acetaminofen/administração & dosagem , Analgésicos não Narcóticos/administração & dosagem , Internet , Medicamentos sem Prescrição/administração & dosagem , Inquéritos e Questionários , Adulto , Esquema de Medicação , Feminino , Humanos , Masculino
14.
Radiol Technol ; 85(6): 609-13, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25002640

RESUMO

PURPOSE: Breast density categorization consistency is important when performing research, and minimization of interoperator and intraoperator variability is essential. This research aimed to validate a set of mammography images for visual breast density estimation to achieve consistency in future research projects and to determine observer performance. METHODS: Using the Breast Imaging Reporting and Data System (BI-RADS) as the visual grading scale, 50 mammography images were scored for density grade by 8 observers. RESULTS: Six of 8 observers achieved near-complete intraobserver agreement (kappa > 0.81). Strong agreement among observers (kappa = 0.61-0.8) was found in 10 of 28 paired observation episodes on the first iteration and 12 of 28 on the second. No observers demonstrated a delta variance above 1. Fleiss' kappa was used to evaluate concordance among all observers on the first and second iterations (first iteration, 0.64; second iteration, 0.56). DISCUSSION: This research illustrates the difficulties of comparing observer visual performance scores because differences can exist when studies are repeated by and among individuals. CONCLUSION: We confirmed that the 50 images were suitable for research purposes. Some variability existed among observers; however, overall density classification agreement was strong. Future research should include repeating this study with digitally acquired images.


Assuntos
Absorciometria de Fóton/normas , Bases de Dados Factuais/normas , Guias como Assunto , Mamografia/métodos , Mamografia/normas , Escala Visual Analógica , Feminino , Humanos , Variações Dependentes do Observador , Sistemas de Informação em Radiologia/normas , Valores de Referência , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Estados Unidos
15.
Pharmacoepidemiol Drug Saf ; 21(12): 1280-8, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23001694

RESUMO

PURPOSE: Acetaminophen is a commonly used analgesic; excessive doses can lead to liver damage. We sought to determine the proportion of acetaminophen users exceeding the recommended maximum daily dose of 4 g and identify correlates of such behavior. METHODS: U.S. adults were recruited from an internet panel in summer 2010, oversampling past 30-day acetaminophen users. Among 47 738 starting the study, 5649 completed all phases; individuals with low education were underrepresented. Subjects completed a 7-day daily diary online, reporting intake of acetaminophen products selected from a comprehensive list; total daily dose was computed from product names. An exit survey elicited: attitudes/knowledge related to product ingredients, label reading, dosing behavior; demographics, medical history, general physical, and mental health status. Unconditional logistic regression identified variables independently associated with use exceeding 4 g. RESULTS: Among 3618 acetaminophen users, 163 took >4 g on ≥1 day (4.5%); the median dose was 5.5 g; 26 took >8 g (0.7%). >4-g users were characterized by chronic pain, poor physical status, and heavy use of medical care. Knowledge of ingredients and recommended OTC doses for all products taken was inversely associated with >4-g use (multivariable odds ratios [ORs] = 0.5-0.6), as was the attitude to start with the lowest dose (OR = 0.6). The attitude that users could choose their own dose was positively associated (OR = 1.3). CONCLUSIONS: The results estimate the proportion of acetaminophen users exceeding 4 g in a group of U.S. adults, identify potentially modifiable attitudes and knowledge associated with such use, and characterize subpopulations at higher risk.


Assuntos
Acetaminofen/administração & dosagem , Analgésicos não Narcóticos/administração & dosagem , Overdose de Drogas/epidemiologia , Acetaminofen/intoxicação , Adulto , Rotulagem de Medicamentos , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Internet , Modelos Logísticos , Masculino , Prevalência , Estados Unidos/epidemiologia
16.
Breast J ; 18(3): 253-6, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22583195

RESUMO

We aimed to examine a cohort of patients presenting with breast implant complications to establish the sensitivity and specificity of clinical examination, Ultrasound Scanning (US) and Magnetic Resonance Imaging (MRI) in the diagnosis of implant rupture, and to examine the correlation between US and MRI. We performed a 26-month retrospective review. Patients underwent US and MRI to exclude rupture. Results of US and MRI were compared prospectively for concordance, then retrospectively to clinical findings and surgical diagnosis. Thirty-four patients with 60 implants were reviewed. The sensitivities of clinical diagnosis, US, and MRI for rupture was 42%, 50%, and 83%, respectively, while the specificities were 50%, 90%, and 90%. The concordance between US and MRI was 87%. MRI is the investigation of choice for implant rupture. US is a valuable alternative with good concordance with MRI. When US is positive for implant rupture an MRI is not necessary to confirm the diagnosis. Knowledge of the sensitivity and specificity as well as the concordance between the two investigations is useful to ensure the appropriate use of available resources.


Assuntos
Implante Mamário/efeitos adversos , Implantes de Mama/efeitos adversos , Imageamento por Ressonância Magnética , Complicações Pós-Operatórias/diagnóstico , Falha de Prótese , Ultrassonografia Mamária , Estudos de Coortes , Feminino , Humanos , Imageamento por Ressonância Magnética/economia , Complicações Pós-Operatórias/diagnóstico por imagem , Estudos Prospectivos , Estudos Retrospectivos , Ultrassonografia Mamária/economia
18.
J Endourol ; 25(4): 673-9, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21381959

RESUMO

GOALS: To elucidate the determinants of Oxalobacter formigenes colonization in humans. BACKGROUND: O. formigenes is a gram-negative anaerobic bacterium that colonizes the colon of a substantial proportion of the normal population and metabolizes dietary and endogenous oxalate. The bacterium has been associated with a large reduction in the odds of recurrent calcium oxalate kidney stones. Subjects were 240 healthy individuals from Massachusetts and North Carolina. O. formigenes was detected by culture of fecal swabs. Information on factors of interest was obtained by telephone interviews and self-administered questionnaires. STUDY RESULTS: The overall prevalence of O. formigenes was 38%. Use of specific antibiotics previously thought to affect the bacterium was significantly related to colonization, with prevalences of 17%, 27%, and 36%, for those who had used these drugs <1, 1-5, and >5 years ago, compared with 55% in nonusers. There were no significant associations with demographic factors, nutrient intake, or medical history, although the prevalence appeared to increase somewhat with increasing oxalate consumption. CONCLUSIONS: Some antibiotics markedly affect colonization with O. formigenes. Although no other factor was identified as having a material influence on the prevalence of the bacterium, there is much to learn about how an individual acquires the organism and which factors affect persistence of colonization.


Assuntos
Oxalobacter formigenes/crescimento & desenvolvimento , Adulto , Idoso , Antibacterianos/farmacologia , Estudos de Casos e Controles , Contagem de Colônia Microbiana , Demografia , Feminino , Humanos , Masculino , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Oxalobacter formigenes/efeitos dos fármacos , Estados Unidos
19.
Arch Pediatr Adolesc Med ; 165(2): 134-40, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21300653

RESUMO

OBJECTIVE: To determine whether preadolescent children with hemifacial microsomia (HFM) have higher risk of neurodevelopmental delays than unaffected control individuals. DESIGN: Case-control follow-up study of neurodevelopment in children with and without HFM. SETTING: Case individuals were originally recruited from 26 craniofacial centers across the United States and Canada, and controls were recruited through community pediatricians. PARTICIPANTS: One hundred thirty-six children with HFM (cases) and 568 unaffected children (controls). Main Exposure  History of HFM. MAIN OUTCOME MEASURES: The Peabody Picture Vocabulary Test-Third Edition, the Beery-Buktenica Developmental Test of Visual Motor Integration-Fifth Edition, and the Academic Competence scales from the Child Behavior Checklist and the Teacher Report Form. RESULTS: Children with HFM scored lower than controls on all measures (effect size = -0.27 to -0.45; P < .001 to P = .008). Compared with controls, cases were 2 to 3 times as likely to score in the at-risk range. Relative to controls, outcomes were worse for male cases and those whose mothers were 25 years or younger at the time of their birth. Cases with HFM plus other malformations had poorer outcomes, as did cases with hearing, vision, or speech impairments. CONCLUSIONS: This is the first study, to our knowledge, to show that children with HFM have poorer neurodevelopmental outcomes than unaffected children, but further study using more detailed assessments is indicated. Clinically, the findings suggest that early neurodevelopmental screening is warranted for all children with HFM.


Assuntos
Deficiências do Desenvolvimento/fisiopatologia , Assimetria Facial/fisiopatologia , Canadá/epidemiologia , Estudos de Casos e Controles , Criança , Pré-Escolar , Deficiências do Desenvolvimento/diagnóstico , Deficiências do Desenvolvimento/epidemiologia , Assimetria Facial/epidemiologia , Feminino , Seguimentos , Humanos , Masculino , Testes Neuropsicológicos , Fatores de Risco , Estados Unidos/epidemiologia
20.
J Pediatr Psychol ; 36(7): 794-805, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21345938

RESUMO

OBJECTIVE: To determine whether children with hemifacial microsomia (HFM) have higher risk for psychosocial problems than children without HFM. METHODS: One hundred and thirty-six children with HFM (64% male, mean age = 6.9 years) were compared to 568 matched controls (50% male, mean age = 7.0 years) on parent and teacher measures of behavior problems and social competence, and teacher rankings of peer acceptance. RESULTS: Parents of cases and controls reported similar levels of behavior problems and social competence. Teachers reported higher frequencies of internalizing problems, lower social competence and less peer acceptance for cases. Relative to controls, teacher-rated outcomes were worse for female cases, those with younger mothers at the time of birth, those with eye anomalies, and those with one or more malformations in addition to the core features of HFM. CONCLUSIONS: This study provides the first evidence of relatively poor psychosocial outcomes among children with HFM.


Assuntos
Comportamento Infantil/psicologia , Assimetria Facial/psicologia , Comportamento Social , Apoio Social , Estudos de Casos e Controles , Criança , Transtornos do Comportamento Infantil/diagnóstico , Transtornos do Comportamento Infantil/psicologia , Pré-Escolar , Docentes , Feminino , Síndrome de Goldenhar/psicologia , Humanos , Masculino , Grupo Associado , Fatores Sexuais
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