The effect of contract witnessing on motivation and weight loss in a weight control program

Impact of Social Support on Colorectal Cancer Screening among Adult Hispanics/Latinos: A Randomized Community-based Study in Central Pennsylvania

In the United States, the five-year survival rate of colorectal cancer for Latinos is lower than it is for White, non-Latinos. Differences in survival are due, in part, to Latinos being diagnosed at a later stage. An ethnic gap in the use of colorectal cancer screening contributes to the difference in survival. We developed, implemented, and evaluated a targeted colorectal cancer screening intervention to increase colorectal cancer screening uptake by sex, ethnicity, and geography. We measured actual colorectal cancer screening uptake in both arms as a method to determine completion rates. We used a randomized, community-based, participatory design to test the impact of social support (intervention) on completion of a provider-recommended, take-home fecal immunochemical test (FIT) kit screening test among average-risk, urban, and rural Pennsylvania Latino adults age 50 and older not currently adherent to national colorectal cancer screening guidelines (n = 264). Participants in each arm attended a community-based educational program offered at eight sites. Among the 264 participants, 154 (58%) returned a completed usable FIT kit screening test. A higher return rate was observed among participants in the social support arm (66.0%) compared with the control (47.2%). Participants in the social support arm were statistically significant 2.67 times as likely to return a completed FIT kit. Of these, 27 (17.5%) had a positive FIT kit screening test result. The results of this study suggest that social support is an effective method to increase colorectal cancer screening rates among Latinos. Future studies should examine dissemination and implementation of community-based strategies among Latinos that include social support.

The effect of commitment-making on weight loss and behaviour change in adults with obesity/overweight; a systematic review

Background

Adherence to weight loss interventions is crucial to successful outcomes, yet little is known about how best to improve it. This suggests a need for developing and improving adherence strategies, such as formal commitments. This review aims to identify the effect of including a commitment device alongside lifestyle interventions on weight loss, and identify the most appropriate delivery mechanisms and target behaviours.

Methods

We searched five databases and hand-searched reference lists for trials of behavioural interventions to achieve weight loss among adults with excess weight or obesity. Interventions incorporating commitment devices were included in a narrative review and meta-analysis where appropriate. Commitment devices with financial incentives were excluded.

Results

Of 2675 unique studies, ten met the inclusion criteria. Data from three randomised trials including 409 participants suggests that commitment interventions increases short-term weight loss by a mean of 1.5 kg (95% CI: 0.7, 2.4). Data from two randomised trials including 302 patients suggests that benefits were sustained at 12 months (mean difference 1.7 kg; 95% CI: 0.0, 3.4). Commitment devices appeared most successful when made publicly, and targeting diet rather than physical activity.

Conclusions

Using commitment devices, such as behavioural contracts, as part of a weight loss intervention may be useful in improving weight loss outcomes and dietary changes, at least in the short-term. However, evidence is limited and of variable quality so results must be interpreted with caution. Poor reporting of intervention details may have limited the number of identified studies. More rigorous methodology and longer term follow-ups are required to determine the effectiveness of behavioural contracts given their potential for use in public health interventions.

Goal setting as a health behavior change strategy in overweight and obese adults: a systematic literature review examining intervention components

OBJECTIVE

This paper describes goal setting components used for behavior change specific to diet and physical activity in community-based interventions targeting overweight and obese adults.

METHODS

A systematic literature review was conducted. Studies were evaluated using the S.T.A.R.T. (Specificity, Timing, Acquisition, Rewards and feedback, and Tools) criteria which were developed for the purposes of this paper in order to elucidate which intervention features elicit optimal health behavior outcomes.

RESULTS

Eighteen studies were included. Based on the S.T.A.R.T. criteria, it was determined that developing specific goals that are in close proximity, involve the participant in acquisition, and incorporate regular feedback, are common features in this context.

CONCLUSION

Goal setting can be useful for effecting health behavior changes in this population. However, as different intervention components were often implemented concurrently (e.g., education sessions, self-monitoring records), it was not possible to ascertain which were responsible for positive changes independently.

PRACTICE IMPLICATIONS

Goal setting shows promise as a tool that can be incorporated into weight reduction programs by health care professionals and researchers. Studies are warranted to identify the specific mechanisms through which individuals with overweight or obesity can apply the S.T.A.R.T. criteria with respect to goal setting for the purposes of weight loss.

A brief office intervention is associated with improved health measures

Cardiovascular disease is the leading cause of morbidity and mortality for adults in developed countries. Many risk factors responsible for the development of cardiovascular disease are associated with behavior. We studied whether encouraging patients to be accountable for their own lifestyle choices would lead to improvements in subjective and objective health measures in 26 consecutive general cardiology clinic patients. Our hypothesis was, that after a simple brief cardiologist-initiated motivational discussion during a routine general cardiology clinic visit that included a weight loss "contract" signed by the patient, physician and a witness, patients would be more likely to lose weight or to remain the same weight as compared to historical controls. We found that intervention patients were more likely to lose weight or to remain the same weight, (p<0.01).

Contracts between patients and healthcare practitioners for improving patients' adherence to treatment, prevention and health promotion activities

BACKGROUND

Contracts are a verbal or written agreement that a patient makes with themselves, with healthcare practitioners, or with carers, where participants commit to a set of behaviours related to the care of a patient. Contracts aim to improve the patients' adherence to treatment or health promotion programmes.

OBJECTIVES

To assess the effects of contracts between patients and healthcare practitioners on patients' adherence to treatment, prevention and health promotion activities, the stated health or behaviour aims in the contract, patient satisfaction or other relevant outcomes, including health practitioner behaviour and views, health status, reported harms, costs, or denial of treatment as a result of the contract.

SEARCH STRATEGY

We searched: the Cochrane Consumers and Communication Review Group's Specialised Register (in May 2004); the Cochrane Central Register of Controlled Trials (CENTRAL), (The Cochrane Library 2004, issue 1); MEDLINE 1966 to May 2004); EMBASE (1980 to May 2004); PsycINFO (1966 to May 2004); CINAHL (1982 to May 2004); Dissertation Abstracts. A: Humanities and Social Sciences (1966 to May 2004); Sociological Abstracts (1963 to May 2004); UK National Research Register (2000 to May 2004); and C2-SPECTR, Campbell Collaboration (1950 to May 2004).

SELECTION CRITERIA

We included randomised controlled trials comparing the effects of contracts between healthcare practitioners and patients or their carers on patient adherence, applied to diagnostic procedures, therapeutic regimens or any health promotion or illness prevention initiative for patients. Contracts had to specify at least one activity to be observed and a commitment of adherence to it. We included trials comparing contracts with routine care or any other intervention.

DATA COLLECTION AND ANALYSIS

Selection and quality assessment of trials were conducted independently by two review authors; single data extraction was checked by a statistician. We present the data as a narrative summary, given the wide range of interventions, participants, settings and outcomes, grouped by the health problem being addressed.

MAIN RESULTS

We included thirty trials, all conducted in high income countries, involving 4691 participants. Median sample size per group was 21. We examined the quality of each trial against eight standard criteria, and all trials were inadequate in relation to three or more of these standards. Trials evaluated contracts in addiction (10 trials), hypertension (4 trials), weight control (3 trials) and a variety of other areas (13 trials). Sixteen trials reported at least one outcome that showed statistically significant differences favouring the contracts group, five trials reported at least one outcome that showed differences favouring the control group and 26 trials reported at least one outcome without differences between groups. Effects on adherence were not detected when measured over longer periods.

AUTHORS' CONCLUSIONS

There is limited evidence that contracts can potentially contribute to improving adherence, but there is insufficient evidence from large, good quality studies to routinely recommend contracts for improving adherence to treatment or preventive health regimens.

Role of social support in lifestyle-focused weight management interventions

Social support is important to achieve beneficial changes in risk factors for disease, such as overweight and obesity. This paper presents the theoretical and practical framework for social support, and the mechanisms by which social support affects body weight. The theoretical and practical framework is supported with a literature review addressing studies involving a social support intervention for weight loss and weight loss maintenance. A major aspect in social support research and practice is the distinction between structural and functional support. Structural support refers to the availability of potential support-givers, while functional support refers to the perception of support. Interventions often affect structural support, for example, through peer groups, yet functional support shows a stronger correlation with health. Although positive correlations between social support and health have been shown, social support may also counteract health behaviour change. Most interventions discussed in this review showed positive health outcomes. Surprisingly, social support was clearly defined on a practical level in hardly any studies, and social support was assessed as an outcome variable in even fewer studies. Future social support intervention research would benefit from clear definitions of social support, a clear description of the intended mechanism of action and the actual intervention, and the inclusion of perceived social support as a study outcome.

Training young pediatricians as leaders for the 21st century

OBJECTIVE

To conduct a needs assessment with young pediatricians who participate in a leadership training program and to evaluate the effectiveness of that program.

METHODS

In concert with the Johnson & Johnson Pediatric Institute, LLC, the American Academy of Pediatrics developed a 1-year strategy to train pediatricians who are <40 years old or <5 years in practice in leadership skills. Participants were nominated by American Academy of Pediatrics chapters and/or sections and were required to complete a detailed needs assessment, attend a 3-day training program, and commit to 1 leadership-related behavior change to be implemented within 6 months. A preanalytic/postanalytic design strategy was used.

RESULTS

A total of 56 applicants representing 33 US states participated; 44.6% were male, and more than half (51.8%) were employed at a medical school/hospital. The needs assessment indicated that participants were confident in many of their leadership qualities but desired increased training, particularly in areas of time and priority management and leading "from the middle." Postsurvey instruments (n = 54, 96% response rate) determined that participants positively evaluated the training program and improved in self-reported basic competencies; 87% also reported fully or partially achieving a leadership-related goal identified in a behavior change contract.

CONCLUSIONS

Results demonstrate that young physicians are eager for leadership training and that continuing medical education in this area can be provided with positive results. Core competencies, curriculum, and evaluative tools need to be developed further and training opportunities need to be expanded to other subpopulations of pediatricians and pediatric health care providers.

Weight loss attempts in adults: goals, duration, and rate of weight loss

OBJECTIVES

Although attempted weight loss is common, little is known about the goals and durations of weight loss attempts and the rates of achieved weight loss in the general population.

METHODS

Data were collected by telephone in 1989 from adults aged 18 years and older in 39 states and the District of Columbia. Analyses were carried out separately for the 6758 men and 14,915 women who reported currently trying to lose weight.

RESULTS

Approximately 25% of the men respondents and 40% of the women respondents reported that they were currently trying to lose weight. Among men, a higher percentage of Hispanics (31%) than of Whites (25%) or Blacks (23%) reported trying to lose weight. Among women, however, there were no ethnic differences in prevalence. The average man wanted to lose 30 pounds and to weigh 178 pounds; the average woman wanted to lose 31 pounds and to weigh 133 pounds. Black women wanted to lose an average of 8 pounds more than did White women, but Black women's goal weight was 10 pounds heavier. The average rate of achieved weight loss was 1.4 pounds per week for men and 1.1 pounds per week for women; these averages, however, may reflect only the experience of those most successful at losing weight.

CONCLUSIONS

Attempted weight loss is a common behavior, regardless of age, gender, or ethnicity, and weight loss goals are substantial; however, obesity remains a major public health problem in the United States.