Weather factor impacts on commuting to work by bicycle.

OBJECTIVE: Quantify the impact of weather conditions on individual decisions to commute to work by bicycle among a diverse panel of adults who commute ≥2 miles each way. METHOD: Working adults (n=163) in a northern U.S. state reported transportation mode for four seven-day periods in 2009-2010 that maximized seasonal weather variations. Personal characteristics, trip to work distances, and commuting mode data were linked to location- and time-specific weather data and daylight hours. Analyses focused on effect of weather conditions on reports of commuting by bicycle. RESULTS: Participants were diverse in age, gender and bicycle use, but were relatively well-educated; they traveled to work by bicycle on 34.5% of the logged commuting days. Modeling indicated that the likelihood of bicycle commuting increased in the absence of rain (odds ratio=1.91; 95% confidence interval 1.42, 2.57) and with higher temperatures (1.03; 1.02, 1.04), and decreased with snow (0.90; 0.84, 0.98) and wind (0.95; 0.92, 0.97). Independent effects also were found for bicycle commuting distance, gender, and age, but not for daylight hours. CONCLUSION: Precipitation, temperature, wind and snow conditions had significant and substantial independent effects on the odds of travel to work by bicycle among a diverse panel of adult bicycle commuters.

Primary care physicians' use of family history for cancer risk assessment.

BACKGROUND: Family history (FH) assessment is useful in identifying and managing patients at increased risk for cancer. This study assessed reported FH quality and associations with physician perceptions. METHODS: Primary care physicians practicing in two northeastern U.S. states were surveyed (n = 880; 70% response rate). Outcome measures of FH quality were extent of FH taken and ascertaining age at cancer diagnosis for affected family members. Predictors of quality measured in this survey included: perceived advantages and disadvantages of collecting FH information, knowledge of management options, access to supportive resources, and confidence in ability to interpret FH. RESULTS: Reported collection of information regarding second degree blood relatives and age of diagnosis among affected relatives was low. All hypothesized predictors were associated with measures of FH quality, but not all were consistent independent predictors. Perceived advantages of taking a family history, access to supportive resources, and confidence in ability to identify and manage higher risk patients were independent predictors of both FH quality measures. Perceived disadvantages of taking a family history was independently associated one measure of FH quality. Knowledge of management options was not independently associated with either quality measure. CONCLUSIONS: Modifiable perception and resource factors were independently associated with quality of FH taking in a large and diverse sample of primary care physicians. Improving FH quality for identification of high risk individuals will require multi-faceted interventions.

Increasing patient/physician communications about colorectal cancer screening in rural primary care practices.

BACKGROUND: Rural populations as well as less educated people in the United States are less likely to receive colorectal cancer (CRC) screening than people living in urban areas and more educated people. METHODS: We tested a computer tablet, Patient/Provider Communication Assistant (PPCA), which collected data, educated patients, and printed personalized notes to patients and providers encouraging conversation about CRC screening. Mixed model analyses using a prepost quasi-experimental design compared patient results during the comparison and intervention periods in 5 rural primary care practices on provider discussion about CRC screening, provider recommendation, and patient intention to be screened. Models including age, education, and literacy measures as covariates were examined. RESULTS: Providers talked with patients about CRC screening in general, and colonoscopy specifically more frequently after the PPCA than with the comparison group (P values = 0.04 and 0.01, respectively). Providers recommended CRC screening more often to patients in the intervention group than to the comparison group (P = 0.02). Patients planned to be screened, specifically with colonoscopy, more frequently after the intervention than in the comparison group (P = 0.003). There were no interactions between group and any of the covariates. Ninety-five percent of the patients, regardless of age or education, found the PPCA easy to use. CONCLUSIONS: Results indicated increased provider discussion and recommendation, and patients' intentions to obtain CRC screening, and in particular colonoscopy, for patients exposed to the intervention, regardless of the patients' age or literacy levels. The PPCA is a promising intervention method that is acceptable to rural patients.

Mass media and community interventions to reduce alcohol use by early adolescents.

OBJECTIVE: Although early use of alcohol is an immediate and long-term risk for young people, proven prevention strategies are limited. Mass media interventions have been shown to be effective in reducing use of other substances by adolescents. This study tested the impact of a 4-year media campaign designed to reduce alcohol use by early adolescents. METHOD: Theory-based television and radio messages promoting avoidance of alcohol were developed and delivered to an audience of young people as they matured from Grades 4-5 to Grades 7-8. A set of eight school districts was identified as the Media Area; eight matching districts served as the Comparison Area. Independent Grade 7-8 surveys were conducted in all districts at baseline (N= 2897) and after the interventions (N=2419). Unanticipated community coalitions working to reduce youth substance use were introduced into 10 of these 16 communities during the same time period. RESULTS: Exposure of the target audience to the media messages was lower than expected, and the unplanned community coalition interventions may have favored the Comparison Area. The main analyses indicated that the media interventions did not significantly affect alcohol use or its mediators. Supplementary analyses suggested a substantial impact of community coalitions on alcohol use and several key mediators. CONCLUSIONS: The mass media interventions provided by this study had no effect on adolescent alcohol use or its psychosocial mediators. Factors external to the study reduced chances of detecting media effects. Further work is needed to develop and test mass media strategies for alcohol use prevention among early adolescents.

State legislators' beliefs about legislation that restricts youth access to tobacco products.

Better understanding of the cognitive framework for decision making among legislators is important for advocacy of health-promoting legislation. In 1994, the authors surveyed state legislators from North Carolina, Texas, and Vermont concerning their beliefs and intentions related to voting for a hypothetical measure to enforce legislation preventing the sale of tobacco to minors, using scales based on the theory of planned behavior. Attitude (importance), subjective norm (whether most people important to you would say you should or should not vote for the law), perceived behavioral control (ability to cast one's vote for the law), and home state were independently and significantly related to intention to vote for the law's enforcement. The results, including descriptive data concerning individual beliefs, suggest specific public health strategies to increase legislative support for passing legislation to restrict youth tobacco sales and, more generally, a framework for studying policy making and advocacy.