Carboplatin could be safely combined with paclitaxel using a dose formula based on projected renal clearance. The recommended outpatient regimen is carboplatin AUC 7.5 and paclitaxel 175 mg/m2 over 3 hours without initial G-CSF. This treatment safely achieved a greater dose-intensity of carboplatin than would have been achieved with conventional dosing based on body-surface area.
Given the extensive utilization of the Internet for health information, web-based health promotion interventions are widely perceived as an effective communication channel. This study was conducted to determine utilization of a web-based intervention intended to improve colorectal cancer screening in a population of women who are at average risk and non-compliant to current screening recommendations. The study was a randomized controlled trial designed to compare the effectiveness of colorectal cancer screening educational materials delivered via the Internet versus a printed format. In three years, 391 women seen for routine obstetrics/gynecology follow-up at two academic centers provided relevant survey information. Of these, 130 were randomized to the web intervention. Participants received voluntary access to a password protected, study specific web site that provided information about colorectal cancer and colorectal cancer screening options. The main outcome measures were self-reported and actual website utilization. Only 24.6% of women logged onto the website. Age was the only variable that differentiated users from non-users (p = .03). In contrast, 16% of participants self-reported web use. There was significant discordance between the veracity of actual and self-reported use (p = .004). Among true users, most (81%) logged on once only. These findings raise questions about how to increase utilization of important health communication interventions.
In a CRC surveillance population 1 year following resection, CTC was inferior to OC for detecting patients with polyps ≥6 mm. Clinical Trials.gov Registration Number: NCT02143115.
Background
New methods are needed to improve health behaviors such as adherence to colorectal cancer (CRC) screening. There is increasing availability of personalized genetic information to inform medical decisions. It is not known if such information motivates behavioral change.
Objective
To determine, in average risk persons, if individualized gene-environment risk assessment about CRC susceptibility improves adherence to screening.
Design
Two-arm, randomized, controlled trial
Setting
Four medical school affiliated primary care practices
Patients
783 patients at average risk for CRC, but not adherent with screening at study entry
Intervention
Patients were randomized to usual care or to receipt of Gene Environmental Risk Assessment (GERA), which assessed Methylene Tetrahydrofolate Reductase (MTHFR) polymorphisms and serum folate level. Based on pre-specified polymorphism/folate level combinations, GERA participants were told they were at either “elevated” or at “average” risk for CRC.
Measurements
The primary outcome was receipt of CRC screening within 6 months of study entry.
Results
CRC screening rates were not statistically significantly different between usual care (35.7%) and GERA (33.1%) arms overall. After adjustment for baseline participant factors, the odds ratio (OR) for screening completion for GERA vs usual care was 0.88 (95% CI 0.64 - 1.22). Within the GERA arm, there was no significant difference in screening rates between GERA average risk (38.1%) and GERA elevated risk (26.9%) groups. Odds ratios for elevated vs. average risk remained non-significant after adjustment for covariates (OR=0.75, 95% CI 0.39 - 1.42).
Limitations
Only one personalized, gene-environment interaction and only one health behavior, colorectal cancer screening, were assessed.
Conclusion
In average risk persons, there was no positive association between CRC screening uptake and feedback of a single personalized gene-environment risk assessment (GERA). Additional studies will be required to assess whether other approaches to providing GERA affect screening utilization differently. These findings raise concern about the effectiveness of moderately predictive genetic risk assessment to promote favorable healthcare behavior.
Funding
National Institutes of Health (USA)
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