Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Statistics as Topic”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 37 records · Page 2Linked to original sources
PubMed2005

American Academy of Pediatrics Section on Surgery hernia survey revisited.

BACKGROUND: The aim of the study was to describe current treatment and trends in surgical management of pediatric inguinal hernias (IHs), specifically contralateral exploration. METHODS: Surveys were sent to 599 Surgical Section members. Questions paralleled the 1993 American Academy of Pediatrics survey and addressed recent controversial topics. Statistical analysis by chi2 was performed. RESULTS: Three hundred ninety-five (66%) surveys returned. For full-term boys with reducible IH, 79% (82%) repair electively, regardless of age or weight. For full-term girls with reducible ovary, 49% (27%) repair electively, 36% (59%) next available slot, 5% (10%) emergently (P < .01). In former premature infants, 53% (65%) repair reducible IH when convenient, regardless of age. For unilaterally presenting IH, 44% (65%) routinely explore contralateral groins in boys 2 years or younger (P < .01); 47% (84%) routinely explore girls 4 years or younger (P < .01). No significant association between routine exploration patterns and years in practice, region of country, or training program affiliation was found. Laparoscopic evaluation for contralateral IH was reported by 37% (6%), (P < .01) 1993 results italicized. CONCLUSION: Reports of routine contralateral inguinal exploration had absolute decreases of 21% for boys 2 years or younger, 37% for girls 4 years or younger. There has been a shift toward elective repair for girls with reducible ovaries. Use of laparoscopy for diagnostic contralateral evaluation has increased dramatically.

Anemia↗
PubMed2003

Consumer perception of risk associated with eating genetically engineered soybeans is less in the presence of a perceived consumer benefit.

OBJECTIVE: To determine whether perceived benefit alters personal risk perception associated with eating genetically engineered soybeans, consumer desire for labeling, preferred phrase on a label symbol, and desired information in an educational brochure. DESIGN: Comparison of responses of two consumer groups who completed one of two survey versions. SUBJECTS/SETTINGS: One hundred fifty supermarket shoppers, age 21 years and older, for each survey or n=300 total. Focus groups and a pilot test were used to develop the final survey in which consumers read a description of a genetically engineered soybean with either no obvious consumer benefit or an obvious consumer benefit and then completed a set of attitude questions and evaluated a voluntary label design and educational brochure content. Main outcome measures were mean opinion scores of personal risk and desire for labeling and ranking of desired label phrase and brochure topics. STATISTICAL ANALYSIS: Chi;(2) and t Tests were used. RESULTS: Consumers reading about the soybean with obvious consumer benefit were significantly more comfortable eating these than those reading about the soybean with no obvious consumer benefit (2.9+/-1.1 vs 3.4+/-1.0, respectively; P</=.001). However, the groups did not differ in desire for labeling of foods made with these soybeans or preferred brochure content. They did differ significantly in preferred phrase on the symbol (P</=.05). APPLICATIONS/CONCLUSIONS: Dietitians can use descriptions of genetic engineering applications such as those in this study to help consumers assess these applications. Dietitians can play a critical role in explaining labeling terms and designing educational materials when the FDA finalizes voluntary labeling regulations for genetically engineered foods.

Adult↗
PubMed2003

The Female Collegiate Cross-Country Runner: Nutritional Knowledge and Attitudes.

OBJECTIVE: To assess the nutritional knowledge and attitudes of the female collegiate cross-country runner. Awareness of the deficient areas of nutritional knowledge, important in performance and healing, may assist professionals in educating female runners. DESIGN AND SETTING: In this descriptive study, subjects completed a nutritional questionnaire with both quantitative and qualitative components. In a 9-day period, the nutritional questionnaire was administered at 6 colleges and universities in Illinois and Michigan. SUBJECTS: The convenience sample included female collegiate cross-country runners (N = 60). Overall compliance rate was 61% (60 out of 99). MEASUREMENTS: Our questionnaire included a demographics section, 76 Likert-scale true-false questions, and 7 open-ended questions. True-false questions were divided into subscales of 3 or more questions based on the topic. Statistical analyses focused on quantitative analysis. RESULTS: Runners who completed a nutrition course in college scored significantly higher overall. Runners scored significantly higher in the knowledge for the athlete component than in the general knowledge component. Several specific areas of deficient nutritional knowledge were identified. Overall, the mean of the runners' total positive responses for the attitudes component of the questionnaire was 90.6%. CONCLUSIONS: Our findings suggest that the female collegiate cross-country runner lacks nutritional knowledge critical to preventing nutrition-related health problems. Because most of the runners in our study exhibited positive attitudes toward nutrition, female collegiate cross-country runners may be receptive to nutritional education.

Journal Article↗
PubMedDate not supplied

[Adolescents' knowledge about adolescence, puberty and sexuality].

OBJECTIVE: The objective of this research was to evaluate the level of knowledge about adolescence, pubertal development and sexuality among adolescents from 10 to 14 years old at municipal public schools in Feira de Santana-Bahia, 2000. METHODS: Cross-sectional study, with a randomized and proportional sample out of a population of 6,419 students in the municipal Public System. The level of knowledge was analyzed according to age, sex and educational level. Data was collected by means of a specific confidential questionnaire, which was pre-tested. A scale of values (score--satisfactory, reasonable and unsatisfactory) was established according to the percentage and proportional number of right answers regarding general and specific topics. Statistical inference was calculated by chi-square with a significance of 5% as well as the bivariate and multivariate analysis, calculating the simple and adjusted prevalence, through stratified analysis. RESULTS: Adolescents showed unsatisfactory level of information about terms, particularly those at the age of 10 (69.2%) and 11 years (70.6%), female (61.7%) and the ones in the 4th (82.8%) and 5th (61.1%) grades. The level of knowledge according to sex, adjusted by age and educational level, showed that females are 1.3 and 1.27 times more likely to present an unsatisfactory level of knowledge than males. The level of knowledge according to educational level, adjusted by age, showed that those subjects between 4th and 5th grades are 2.32 times more likely to present an unsatisfactory level of knowledge if compared to students of 6th and 8th grades, with significant differences (p<0.05). CONCLUSIONS: The high prevalence of unsatisfactory level of knowledge with significant association between 4th and 5th grades and females points to the necessity of educative actions regarding health and sexuality in the beginning of adolescence at municipal public schools.

English Abstract↗
PubMed2004

Cytologic diagnosis: expression of probability by clinical pathologists.

BACKGROUND: Clinical pathologists use descriptive terms or modifiers to express the probability or likelihood of a cytologic diagnosis. Words are imprecise in meaning, however, and may be used and interpreted differently by pathologists and clinicians. OBJECTIVES: The goals of this study were to 1) assess the frequency of use of 18 modifiers, 2) determine the probability of a positive diagnosis implied by the modifiers, 3) identify preferred modifiers for different levels of probability, 4) ascertain the importance of factors that affect expression of diagnostic certainty, and 5) evaluate differences based on gender, employment, and experience. METHODS: We surveyed 202 clinical pathologists who were board-certified by the American College of Veterinary Pathologists (Clinical Pathology). Surveys were distributed in October 2001 and returned by e-mail, fax, or surface mail over a 2-month period. Results were analyzed by parametric and nonparametric tests. RESULTS: Survey response rate was 47.5% (n = 96) and primarily included clinical pathologists at veterinary schools (n = 58) and diagnostic laboratories (n = 31). Eleven of 18 terms were used "often" or "sometimes" by >/= 50% of respondents. Broad variability was found in the probability assigned to each term, especially those with median values of 75 to 90%. Preferred modifiers for 7 numerical probabilities ranging from 0 to 100% included 68 unique terms; however, a set of 10 terms was used by >/= 50% of respondents. Cellularity and quality of the sample, experience of the pathologist, and implications of the diagnosis were the most important factors affecting the expression of probability. CONCLUSION: Because of wide discrepancy in the implied likelihood of a diagnosis using words, defined terminology and controlled vocabulary may be useful in improving communication and the quality of data in cytology reporting.

Adult↗
PubMed2002

Research publications in vascular and interventional radiology: research topics, study designs, and statistical methods.

PURPOSE: Statistical analysis is the universal language of medical research and is a vital tool for communicating the results of vascular and interventional radiology (VIR) procedures. Major articles in two radiology journals were surveyed to characterize the research topics, study designs, and statistical methods seen in recent VIR research publications. MATERIALS AND METHODS: The authors retrospectively reviewed 130 major clinical VIR articles published from July 2000 to June 2001: 72 articles (55%) from JVIR and 58 articles (45%) from RADIOLOGY: Articles were categorized by research topic and study design. Data were collected on the statistical methodology of each article. RESULTS: Research topics included vascular intervention in 65 of 130 articles (50%), nonvascular intervention in 26 (20%), vascular imaging in 23 (18%), biopsy in nine (7%), and other topics in seven (5%). Study design was descriptive in 87 studies (67%), comparative in 39 studies (30%), and involved secondary data analysis in four studies (3%). Of 126 primary clinical studies, outcome was cross-sectional (assessed at a single time point) in 40 studies (32%) and longitudinal (measured over time) in 86 studies (68%). Median sample size was 61. Basic tests of association (t-test, chi(2) test, etc.) were used in 71 articles (56%) and advanced tests of association (regression analysis) were presented in 25 (20%). Survival analysis was applied in 34 articles (27%). Decision statistics such as sensitivity/specificity were not used commonly (12%). Confidence intervals and power calculations were reported infrequently (15% and 7%, respectively). CONCLUSIONS: VIR publications focus on time-dependent outcomes after therapeutic interventions. Readers should understand basic tests of association and survival analysis--these include only 20 named statistical tests.

Periodicals as Topic↗
PubMed2004

Comparison of topical lomefloxacin 0.3 per cent versus topical ciprofloxacin 0.3 per cent for the treatment of presumed bacterial corneal ulcers.

PURPOSE: To compare the efficacy and safety of topical lomefloxacin 0.3 per cent with topical ciprofloxacin 0.3 per cent for treating mildly severe suspected bacterial corneal ulcers. METHOD: This prospective, randomized, double-masked controlled clinical trial was conducted on 41 patients (41 eyes) with suspected bacterial corneal ulcers who were randomized into 2 groups: 23 patients were in the lomefloxacin group and 18 patients in the ciprofloxacin group. All of these corneal ulcers were scraped for gram's stain, KOH preparation and microbiologic cultures before starting treatment. The clinical success rate, the time to cure, the rates of treatment failures, ocular signs and symptoms and the adverse effects of the study medication were evaluated. RESULTS: Topical lomefloxacin is equivalent clinically and statistically to topical ciprofloxacin. No statistically significant treatment differences were found between lomefloxacin (100%) and ciprofloxacin (100%) in terms of success rate. Similarly, no differences were noted in the time to cure (p > 0.05), the treatment failure, or the resolution of the clinical signs and symptoms (p > 0.05). The adverse effects of lomefloxacin were superficial punctate keratitis (26.1%) and irritation (8.7%), whereas those of ciprofloxacin were superficial punctate keratitis (22.2%), white precipitate (11.1%) and irritation (11.1%). However, no statistically significant differences of these adverse effects were found between the two groups (p > 0.05). CONCLUSION: Lomefloxacin ophthalmic solution (0.3%) is equivalent clinically and statistically to ciprofloxacin ophthalmic solution (0.3%) for the treatment of mildly severe presumed bacterial corneal ulcers without statistically significant differences in the adverse effects and discomfort.

Administration, Topical↗
PubMed1990

Efficacy of prism adaptation in the surgical management of acquired esotropia. Prism Adaptation Study Research Group.

Prism adaptation, the preoperative use of prisms in acquired esotropia to determine the maximum angle of strabismus and to estimate fusional potential, has been suggested as a method of improving the results of initial surgery and minimizing the rate of reoperation. We performed a prospective, randomized, multicenter clinical trial of the effectiveness of prism adaptation. Two levels of randomization were used. Sixty percent of the patients underwent prism adaptation and 40% did not. Of those who responded to prisms with motor stability and sensory fusion, half underwent a conventional amount of surgery and half underwent augmented surgery based on the prism-adapted angle of deviation. Success rates were highest (54 [89%] of 61 patients) in prism adaptation responders who underwent augmented surgery and lowest (92 [72%] of 127 patients) in patients who did not undergo prism adaptation. Prism responders had better results with augmented surgery than with conventional surgery (54 [89%] of 61 patients vs 53 [79%] of 67 patients, P = .23). Our results indicated a significant beneficial overall effect of prism adaptation in patients with acquired esotropia (success rates, 83% vs 72%, P = .04). Although the process requires some additional time and effort, it appears to result in a higher rate of satisfactory alignment.

Adaptation, Ocular↗