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PubMed2005

The information architecture of behavior change websites.

The extraordinary growth in Internet use offers researchers important new opportunities to identify and test new ways to deliver effective behavior change programs. The information architecture (IA)-the structure of website information--is an important but often overlooked factor to consider when adapting behavioral strategies developed in office-based settings for Web delivery. Using examples and relevant perspectives from multiple disciplines, we describe a continuum of website IA designs ranging from a matrix design to the tunnel design. The free-form matrix IA design allows users free rein to use multiple hyperlinks to explore available content according to their idiosyncratic interests. The more directive tunnel IA design (commonly used in e-learning courses) guides users step-by-step through a series of Web pages that are arranged in a particular order to improve the chances of achieving a goal that is measurable and consistent. Other IA designs are also discussed, including hierarchical IA and hybrid IA designs. In the hierarchical IA design, program content is arranged in a top-down manner, which helps the user find content of interest. The more complex hybrid IA design incorporates some combination of components that use matrix, tunnel, and/or hierarchical IA designs. Each of these IA designs is discussed in terms of usability, participant engagement, and program tailoring, as well as how they might best be matched with different behavior change goals (using Web-based smoking cessation interventions as examples). Our presentation underscores the role of considering and clearly reporting the use of IA designs when creating effective Web-based interventions. We also encourage the adoption of a multidisciplinary perspective as we move towards a more mature view of Internet intervention research.

Behavior Control↗
PubMedDate not supplied

Pocket v.2: further developments on receptor-based pharmacophore modeling.

A deriving pharmacophore model from the three-dimensional structure of a target protein provides helpful information for analyzing protein-ligand interactions and further improvement of ligand binding affinity. A standalone program, Pocket v.2, has been developed based on the original Pocket module in the de novo drug design program LigBuilder. Pocket v.2 is able to derive a pharmacophore model directly from a given protein-ligand complex structure without human intervention. Key features in the pharmacophore model are automatically reduced to a reasonable number. Pocket v.2 has been applied to several case studies, including cyclin dependent kinase 2, HIV-1 protease, estrogen receptor, and 17beta-hydroxysteroid dehydrogenase. It well reproduced previously published pharmacophore models in all of these cases. One notable feature of Pocket v.2 is that it can tolerate minor conformational changes on the protein side upon binding of different ligands to give a consistent pharmacophore model. For different proteins accommodating the same ligand, Pocket v.2 gives similar pharmacophore models, which opens the possibility to classify proteins with their binding features.

17-Hydroxysteroid Dehydrogenases↗
PubMed1999

VisualiSAR: a web-based application for clustering, structure browsing, and structure-activity relationship study.

VisualiSAR is a program designed to display chemical structures, find similarities and differences between them, and highlight relationships that might exist. The program integrates cluster analysis for the grouping of structurally related compounds, modal analysis of molecular fingerprints for the sorting and highlighting of chemical features, and a Web-based interface for flexibility and ease of use. VisualiSAR has proved useful for a number of applications including the discernment of structure-activity relationships (SAR) of high-volume screening data, and general structure browsing. This article discusses the design of the tool and illustrates two applications.

Computer Simulation↗
PubMed2003

Universal influenza immunization. Were Ontario family physicians prepared?

OBJECTIVE: To explore family physicians' experiences during the first year of Ontario's universal influenza immunization program. DESIGN: Qualitative study using in-depth interviews. SETTING: Thames Valley region of southwestern Ontario. PARTICIPANTS: A maximum variation sample of nine family physicians selected by snowball sampling after initial consultation with a local family physician advisory committee. METHOD: Interviews were audiotaped and transcribed verbatim. Analysis was sequential, using a combination of editing, immersion, and crystallization. Interview transcripts were read by individual members of the team who met to compare findings at several stages during data collection. MAIN FINDINGS: The program affected family physicians because immunization strategies designed for immunizing high-risk patients needed to be modified to deal with greater numbers of patients. While generally supportive of the program, physicians found it difficult to implement. Responses reflected ongoing conflict between individual and public health priorities, particularly regarding children and pregnant women. CONCLUSION: The program could have been more effective if the culture and climate of Ontario family practice had been considered during its development and implementation.

Attitude of Health Personnel↗
PubMed1988

Case management and quality assurance to improve care of inner-city children with asthma.

Case management and quality assurance techniques were used in a program designed to improve the process and outcomes of care for inner-city children with asthma. The program had three major elements: assessment of the care of individual patients and feedback to their primary care providers, periodic contact with parents, and provision of educational materials about asthma to parents. Telephone interviews with parents were used to assess knowledge of home asthma care and the type of care prescribed by the child's physician. Medicaid and hospital records were used to measure acute care utilization. Eighty-eight children (aged 0 to 5 years) who had made more than two emergency room visits for asthma were recruited by telephone. Fifty-six prescribing errors were identified, 24 being failure to prescribe an additional drug for short-term use by children receiving continuous therapy. Acute care use dropped 50% compared with a control period. This type of program is feasible but may require in-person recruiting to reach high-risk families without telephones.

Asthma↗
PubMed2002

Six-year follow-up of preventive interventions for children of divorce: a randomized controlled trial.

CONTEXT: Compared with their peers with nondivorced parents, adolescents with divorced parents are more likely to have mental health problems, drop out of school, and become pregnant. The long-term effects of intervention programs for this population are unknown. OBJECTIVE: To evaluate the long-term effectiveness of 2 programs designed to prevent mental health problems in children with divorced parents. DESIGN AND SETTING: Six-year follow-up of a randomized controlled trial of 2 intervention programs (mother program: 11 group and 2 individual sessions; mother plus child program: mother program and 11 group sessions for children) and a control condition (books on postdivorce adjustment), which was conducted in a large metropolitan US city from April 1998 through March 2000. PARTICIPANTS: A total of 218 families (91% of the original sample) with adolescents aged between 15 and 19 years were reinterviewed. MAIN OUTCOME MEASURES: Externalizing and internalizing problems, diagnosed mental disorders, drug and alcohol use, and number of sexual partners. RESULTS: Eleven percent of adolescents in the mother plus child program (95% confidence interval [CI], 3.8%-18.2%) had a 1-year prevalence of diagnosed mental disorder compared with 23.5% (95% CI, 13.8%-33.2%) of adolescents in the control program (P =.007). Adolescents in the mother plus child program had fewer sexual partners (mean [SE], 0.68 [0.16]) compared with adolescents in the control program (1.65 [0.37]; P =.01). Adolescents with higher initial mental health problems whose families were in the mother plus child program had lower externalizing problems (P =.007) and fewer symptoms of mental disorder (P =.02) compared with those in the control program. Compared with controls, adolescents whose mothers participated in the mother program and who had higher initial mental health problems had lower levels of externalizing problems (P<.001); fewer symptoms of mental disorder (P =.005); and less alcohol (P =.005), marijuana (P =.02), and other drug use (P =.01). CONCLUSIONS: In adolescents of divorced parents, the mother program and the mother plus child program reduced symptoms of mental disorder; rates of diagnoses of mental disorder; levels of externalizing problems; marijuana, alcohol, and other drug use; and number of sexual partners.

Adaptation, Psychological↗
PubMed1980

Residential mobility and long-term treatment of hypertension.

Maintenance of long-term care of populations with high mobility patterns poses problems for programs designed to prevent and treat cardiovascular and other chronic diseases. The Hypertension Detection and Follow-up Program (HDFP)--a community-based screening and treatment program implemented in 1973--provided an opportunity to examine residential mobility among adults under long-term treatment in 13 communities. Whereas 11% of hypertensives included in the HDFP changed residence in the first two years of the study, only 4% moved outside the service areas of the programs. Although a higher proportion of blacks (to whites) moved within the service areas, a similar proportion moved outside the service areas. This low residential mobility, especially the low rate of movement outside the service areas of the treatment centers, suggests that mobility of cohorts under long-term treatment and observation may present lesser problems to continuous, long-term community health care programs than do other factors affecting adherence.

Community Health Services↗
PubMed1975

Guidelines for the functioning of a helping service.

The purpose and the operation of an effective helping service are defined along the principles developed by R. R. Carkhuff. A functional operationalism directly linking each aspect of a helping service to the objective of servicing the needs of those people for whom the service exists is developed. The personal fitness of the staff as defined by their effectiveness at living is identified as the critical variable determining service effectiveness. The level of staff performance on the operational indices of physical, emotional, and intellectual functioning including, specifically, the interpersonal dimensions of empathy, respect, genuineness, concreteness, confrontation, and immediacy is designated as the operational basis for the organizational decisions of hiring, firing, promotion, and role assignment. Systematic programs designed to meet specific client needs serve to complete staff and service effectiveness.

Counseling↗
PubMed1982

Software for linear and non-linear optimization in external radiotherapy.

The study presents a set of programs designed to determine optimum dose distribution either by calculation of beam intensities and field width (in linear programming) or, in addition, by calculation of beam geometry (non-linear optimization). Various optimization criteria can be selected: homogeneity, concentration on target, entire dose in a sensitive area. The optimization method used is the gradient projection method, and doses are calculated by Cunningham formulae. The article describes the program operating modes, the main subroutines and their functions and specifications, and outlines an example.

Computers↗
PubMed1997

Risk factors for adult paternity in births to adolescents.

OBJECTIVE: To examine the risk factors for adult (aged 20 years and older) paternity in births to teenagers (14-17 years of age). METHODS: This was a population-based, retrospective cohort analysis of 27,215 adolescent mothers residing in California who had a live singleton birth during 1993. Adjusted risks for adult paternity by paternal and maternal characteristics were derived from comparisons of adult-teen and teen-teen couples. RESULTS: Adult fathers, who were responsible for 49.2% of births to teenage mothers, were a mean of 6.4 years older than the mother. The most important risk factors for adult paternity were as follows: father's (odds ratio [OR] 5.19; 95% confidence interval [CI] 4.43, 6.08) or mother's (OR 1.33; 95% CI 1.14, 1.55) educational attainment of at least 3 years lower than expected for their age, two or more previous live births (OR 3.34; 95% CI 2.48, 4.53), mother's birthplace outside the United States (OR 2.33; 95% CI 2.11, 2.58), father's (OR 2.16; 95% CI 1.98, 2.36) or mother's (OR 1.28; 95% CI 1.15, 1.42) educational attainment 1-2 years lower than expected for their age, one previous live birth (OR 1.92; 95% CI 1.75, 2.12), and Asian (OR 1.29; 95% CI 1.04, 1.62) or African American race (OR 1.25; 95% CI 1.06, 1.46) of the father. CONCLUSIONS: Teenage pregnancy prevention programs must address adult paternity, which contributed to almost half of the births in our study. These programs should consider education adequacy, cultural beliefs and practices, previous live births, and race and ethnicity when designing programs to decrease the number of adults involved in teenage births.

Adolescent↗
PubMed1997

EasyMA: a program for the meta-analysis of clinical trials.

Meta-analysis of clinical trial data is an increasingly important method in clinical research, particularly in the field of therapeutic evaluation. This method uses some specific statistical techniques which are not all available on standard packages and therefore require specific developments. This paper describes a program designed to help medical researchers perform meta-analyses of clinical trial data with dichotomous outcomes. This program includes the various statistical methods of meta-analysis and enables cumulative meta-analysis and sub-groups to be performed. A robustness index can be determined and the results obtained in table and graphic formats. Data-editing and data-manipulating facilities are also possible. Much care has been taken to make the user interface as user-friendly as possible, so that the program is within the reach of all medical researchers.

Biometry↗
PubMed2002

Correlates of marijuana use in Colombian adolescents: a focus on the impact of the ecological/cultural domain.

To examine the influence of ecological/cultural factors and family, personality, and peer factors present during early adolescence that influence marijuana use in late adolescence. A community sample of 2,226 Colombian adolescents living in mixed urban-rural communities and their mothers were interviewed in their homes by trained Colombian interviewers, first in 1995-1996 and then again 2 years later. The scales used were based on item intercorrelations and grouped into the following categories: (a) adolescent personality, (b) family traits, (c) peer factors, (d) ecological/cultural variables, and (e) marijuana use. Data were examined using hierarchical regression modeling to determine the relationship between each of the domains and late adolescent marijuana use. The findings supported the family interactional theory of adolescent drug use behavior and found that factors in all of the domains had a direct effect on late adolescent marijuana use as well as indirect effects mediated through the more proximal domains in the model. Of particular interest was the strength of the influence of the ecological/cultural factors, which far exceeded that observed in similar studies done in the United States. Owing to the similarity with findings from studies conducted in the United States, interventions designed domestically could effectively be directly applied to adolescents in Colombia. The findings also suggest that prevention programs designed specifically to target ecological or cultural factors may have the most profound influence for reducing marijuana use in late adolescence.

Adolescent↗
PubMed1997

A controlled trial of an educational program to prevent low back injuries.

BACKGROUND: Low back injuries are common and costly, accounting for 15 to 25 percent of injuries covered by workers' compensation and 30 to 40 percent of the payments made under that program. The high costs of injury, the lack of effective treatment. and the evidence that there are behavioral risk factors have led to widespread use of employee education programs that teach safe lifting and handling. The effectiveness of those programs, however, has received little rigorous evaluation. METHODS: We evaluated an educational program designed to prevent low back injury in a randomized, controlled trial involving about 4000 postal workers. The program, similar to that in wide use in so-called back schools, was taught by experienced physical therapists. Work units of workers and supervisors were trained in a two-session back school (three hours of training), followed by three to four reinforcement sessions over the succeeding few years. Injured subjects (from both the intervention and the control groups) were randomized a second time to receive either training or no training after their return to work. RESULTS: Physical therapists trained 2534 postal workers and 134 supervisors. Over 5.5 years of follow-up, 360 workers reported low back injuries, for a rate of 21.2 injuries per 1000 worker-years of risk. The median time off from work per injury was 14 days (range, 0 to 1717); the median cost was $204 (range, zero to $190,380). After their return to work, 75 workers were injured again. Our comparison of the intervention and control groups found that the education program did not reduce the rate of low back injury, the median cost per injury, the time off from work per injury, the rate of related musculoskeletal injuries, or the rate of repeated injury after return to work; only the subjects' knowledge of safe behavior was increased by the training. CONCLUSIONS: A large-scale, randomized, controlled trial of an educational program to prevent work-associated low back injury found no long-term benefits associated with training.

Adolescent↗
PubMed2003

Challenges associated with implementing an education program in a residential aged care setting.

The link between independence and well-being of older people in residential care is well established. This paper reports some challenges encountered during implementation of an education program designed to assist nursing staff to adopt an independence-supporting model of residential care. The education program was part of a larger project aimed at developing an example of best practice in supported care which promotes independence, well-being and community linkages. Implementation of the program created many interesting challenges which were overcome by strategies and facilitating forces such as support from management and some staff and the collaborative nature of the project. Positive outcomes of the education program included increased awareness of and change in, practice; increased staff-resident interaction; and increased encouragement for residents to be independent and to engage with the wider community. Moreover, a facilitator manual - Promoting Independence: A Learning Resource for Aged Care Workers was subsequently developed so that the program can be implemented in aged care facilities elsewhere.

Activities of Daily Living↗
PubMed2000

Benchmarking in health-system pharmacy: experience at Glens Falls Hospital.

The experience of Glens Falls Hospital (GFH) with the Benchmarking Program coordinated by The Clinical Pharmacokinetics Laboratory at Millard Fillmore Hospital is described. GFH, a community hospital in upstate New York with 442 licensed beds, serves a patient population drawn from a five-county area. In 1998, GFH developed a multidisciplinary pharmacy task force charged with generating strategic initiatives for curtailing drug costs. Proposals for various programs, including specific goals, were developed with the aid of trends reported in the individual hospital reports provided by the Benchmarking Program. The data obtained through these reports helped GFH's pharmacy staff establish goals for the appropriate use of many agents, including vancomycin, and allowed GFH to assess the impact of its initiatives through comparisons with similar hospitals across the United States. In 1995, vancomycin expenditures at GFH substantially exceeded those for benchmark hospitals of similar types, but, with the implementation of new vancomycin guidelines aimed at reducing inappropriate use in 1996, the difference was eliminated. The individual hospital reports generated by the Benchmarking Program provide valuable data that can be used to assess pharmacy performance, set drug expenditure goals, and design programs to reduce antimicrobial resistance.

Benchmarking↗
PubMed2006

Cardiac rehabilitation vs. home exercise after coronary artery bypass graft surgery: a comparison of heart rate recovery.

OBJECTIVE: The autonomic dysfunction is known to adversely affect clinical outcome in patients with cardiovascular disease, and exercise training has been shown to modify the sympathovagal control of heart rate. The purposes of this study were to investigate the effect of cardiac rehabilitation on heart rate recovery in patients who received coronary artery bypass grafting (CABG) and compare the effect with that of a home-based exercise program. DESIGN: Fifty-four male patients having undergone CABG were randomly assigned to a cardiac rehabilitation exercise program (n = 18), a home-based exercise program (n = 18), and a control group (n = 18) for 12 wks to evaluate the differences in heart rate recovery among groups. RESULTS: Patients in the cardiac rehabilitation group had significant increases in heart rate recovery (19.1 +/- 6.2 vs. 14.0 +/- 5.4 beats/min, P = 0.022) compared with those in the control group. There were no significant differences in heart rate recovery between cardiac rehabilitation and home-based exercise groups (16.2 +/- 4.8 beats/min) or between home-based exercise and control groups. All three groups had significantly improved heart rate recovery compared with their baseline data (P < 0.001, < 0.001, and 0.007). CONCLUSION: Our results point out that a cardiac rehabilitation exercise program has a positive effect on heart rate recovery in patients having undergone CABG and is consistent with the autonomic improvement. Although the home-based exercise group did not reveal statistical significances over those in the control group, it had comparable efficacy to that demonstrated in the cardiac rehabilitation group.

Coronary Artery Bypass↗
PubMed2004

Untangle, a tool for filtering overlapping diffraction patterns from multicrystals.

Standard crystallographic data-processing protocols are based on single-crystal models; data from aggregates of multiple crystals with different orientations are difficult to process. In certain cases, it is possible to separately index the diffraction patterns from the dominant crystals in the aggregate. Untangle is a program designed to identify and eliminate overlapping spots from such patterns in order to improve data quality. The program has a Python core with a simple and highly portable graphical user interface, permitting visual verification of the process and interactive modification of the overlap threshold. The software is available under an open-source license.

Bacterial Proteins↗
PubMed2005

Women's programs versus mixed-gender day treatment: results from a randomized study.

AIMS: To compare outcomes and costs of out-patient women's treatment to mixed-gender programs. DESIGN: Randomized clinical trial. SETTING: Northern California (USA). INTERVENTION: Day treatment: one community-based women's program, two mixed-gender community-based programs and one mixed-gender hospital-based program. PARTICIPANTS: Substance-dependent women recruited from the community (n = 122). MEASUREMENTS: Women were interviewed at baseline, at the end of treatment (94% response rate) and at 6 and 12 months post-treatment (100% response rates). Measures included alcohol and drug use, and psychiatric and social problems. Program costs were estimated using the Drug Abuse Treatment Cost Analysis Program. FINDINGS: No significant differences between the women's program and any of the mixed-gender programs were found for psychiatric problem severity, problems with family and friends or rates of drug use at any of the follow-up points. Rates of alcohol abstinence and total abstinence were similar between the women's program and both of the mixed-gender community programs, but were higher at the mixed-gender hospital program. Only one of these results was replicated in the multivariate analysis, with the odds of total abstinence significantly lower for those randomized to the women's program than the mixed-gender hospital program. However, the average cost of a treatment episode was significantly higher at the hospital program than at the women's program (1212 US dollars versus 543 US dollars). CONCLUSIONS: These findings suggest that female substance abusers may be treated as effectively in mixed-gender programs as in women's programs.

Adult↗