Biomedical subjects

J E Maddock

Publications and source records attributed to J E Maddock.

5 recordsLinked to original sources

PubMed2001

Statistical power of articles published in three health psychology-related journals.

Power was calculated for 8,266 statistical tests in 187 journal articles published in the 1997 volumes of Health Psychology (HP), Addictive Behaviors (AB), and the Journal of Studies on Alcohol (JSA). Power to detect small, medium, and large effects was .34. .74. and .92 for HP; .34, .75, and .90 for AB; and .41, .81. and .92 for JSA. Mean power estimates are .36, .77, and .91, giving a good estimation for the field of health psychology. J. Cohen (1988) recommended that power to detect effects should be approximately .80. Using this criterion, the articles in these journals have adequate power to detect medium and large effects. Intervention studies have much less power to detect effects than nonintervention studies do. Results are encouraging for this field, although studies examining small effects are still very much underpowered. This issue is important, because most intervention effects in health psychology are small.

Behavioral Medicine↗

PubMed2001

A randomized trial of the Hawaii SunSmart program's impact on outdoor recreation staff.

BACKGROUND: Skin cancer is the most common form of cancer in the United States and one of the most preventable. Prevention programs for children at outdoor recreation sites may influence not only the youth, but the staff, or caregivers, as well. By teaching children about sun protection, staff may also change their sun protection behaviors. OBJECTIVE: We report on the impact of a childhood skin cancer prevention program (SunSmart) on staff at outdoor recreation sites where a child-focused intervention was conducted. METHODS: The intervention included staff training, on-site activities delivered by staff, distribution of sunscreen, and the promotion of sun-safe environments. It was hypothesized that by teaching children about sun protection, staff would change their sun protection behaviors. A randomized trial at 14 recreation sites (n = 176 staff) in Hawaii tested the efficacy of education only, and education plus environmental changes, compared with a control condition. RESULTS: Results showed significant positive changes in knowledge, sun protection habits, norms, and sun protection policies. The education plus environment group was not superior to education alone. CONCLUSION: Changes in staff behavior and attitudes are important for their own health, as positive role models, and for the dissemination of skin cancer control programs.

Adolescent↗

PubMed2000

Sun protection behaviors and stages of change for the primary prevention of skin cancers among beachgoers in southeastern New England.

Sun exposure is the most important avoidable cause of skin cancers. We report characteristics of a representative sample (N = 2,324) of beachgoers in Southeastern New England during the summer of 1995. This sample was not employing adequate sun protection behaviors (83% did not often avoid the sun during midday and only 45% often used sunscreen). Important demographic and skin cancer risk factor differences in sun protective behaviors and stages of change for sun protection were found, especially differences based on age, gender, and degree of sun sensitivity. Consistent with previous research, increased age, female gender, and greater sun sensitivity were each independently associated with more sun protective behaviors. These findings underscore the need for interventions targeting high-risk populations, such as those receiving high-intensity sun exposures at the beach.

Adolescent↗

PubMed2000

Short form of a situational temptation scale for heavy, episodic drinking.

PURPOSE: A short form for situational temptations to drink scale was developed from an original 21-item inventory by Migneault. METHODS: The form measured four hypothesized subscales of temptations on a sample of 348 college drinkers (66% female). Peer pressure, social anxiety, negative affect, and positive/social situations subscales were replicated and reduced. RESULTS: Strong empirical support was found for a hierarchical model, indicating that the four subscales can be summed to provide a global measure of situational temptations. Confirmatory factor results, internal and external validity, and high correlations with the original measures indicate that the short form was as psychometrically valid as the original measure. IMPLICATIONS: Measures of external validity demonstrated the applicability of this measure to heavy drinking prevention programs.

Adult↗

PubMedDate not supplied

The College Alcohol Problems Scale.

A short, reliable two-factor instrument measuring drinking-related negative consequences was developed from a previous measure using two samples of college students. In Study I, data on alcohol use and problems associated with alcohol use were collected on 382 introductory psychology students. The original College Alcohol Problems Scale (CAPS) was tested and found to fit the data poorly. Sequential methods were used to develop a revised instrument. Principal components analyses (PCA) on half of the sample were conducted on 20 items written to measure negative consequences related to college student drinking. Results indicated a two-factor solution measuring social and emotional problems. Confirmatory factor analyses (CFA) on the other half of the sample confirmed the two-factor structure. Further refinement of the instrument resulted in the revised CAPS (CAPS-r), an eight-item two-factor scale. In Study II, the response format was altered to coincide with the Young Adult Problem Screening Test. A total of 726 students completed the instrument as part of a university-wide random sample. CFA showed that the hypothesized model fit well across all measures of model fit and the factor structure was invariant across gender. Additional analyses revealed that the scale was internally consistent and externally valid. A short reliable and valid measure of alcohol-related problems is needed to enable low-cost data collection on college campuses across the nation, as well as to facilitate program evaluation and routine epidemiological surveillance and monitoring.

Adolescent↗