The A and B recommendations you may have missed
The major additions to the A and B recommendations pertained to the use of aspirin to prevent cardiovascular disease, routine screening for depression in adults and adolescents, and screening for obesity in children ages 6 and older. The other recommendations in these categories were reaffirmations of previous recommendations (asking about smoking and providing smoking cessation guidance to adults and pregnant women, advising folic acid supplementation for women planning or capable of pregnancy, and screening pregnant women for syphilis and hepatitis B virus) and the more controversial recommendation for biennial rather than annual mammography for women ages 50 to 74.
The use of aspirin to prevent myocardial infarction in men ages 45 to 79 and ischemic strokes in women ages 55 to 79 was endorsed if a patient’s risk of these cardiovascular events exceeds the risk of bleeding from regular aspirin use. The Task Force recommendation statement is available athttp://www.ahrq.gov/clinic/uspstf09/aspirincvd/aspcvdrs.htmand provides links to tools for calculating the risk of a myocardial infarction (MI) and ischemic stroke, as well as 2 tables to compare the risks and benefits of aspirin therapy for prevention.
Screening adults for depression is endorsed if “staff-assisted depression care supports” are in place to assure accurate diagnosis, effective treatment, and follow-up. Such support includes the presence of clinical staff members who can assist the primary care provider with care support or coordination, case management, or mental health treatment. The definition can be accessed athttp://www.ahrq.gov/clinic/uspstf09/adultdepression/addeprrs.htm.
One example in the statement describes “a successful study designed for practices without ready access to mental health specialty care, (in which) office staff recruited, screened, and enrolled participants who screened positive for depression before a clinic visit. If the physician confirmed the depression diagnosis, the participant was scheduled for a return visit with the physician and to meet with the nurse specialist in 1 week. The nurse specialist reassessed the patient’s level of depression, discussed treatment options and preferences, and asked the participant to complete a homework assignment. Participants completed up to 8 additional sessions that followed the same pattern, either by phone or in person.”
Screening for major depressive disorder (MDD) in adolescents 12 to 18 years of age is recommended when systems are in place to ensure accurate diagnosis, psychotherapy (cognitive-behavioral or interpersonal), and follow-up. The Task Force addressed screening for MDD only—not for less severe depression. The instruments the group recommended using included the Patient Health Questionnaire for Adolescents (PHQ-A) and the Beck Depression Inventory-Primary Care Version (BDI-PC).
The recommendation for screening for obesity in children ages 6 and older reflects the difficulty in achieving long-term, sustainable weight loss in this group. Effective comprehensive weight-management programs include counseling and other interventions that target both diet and physical activity. Behavioral interventions and parental involvement are also encouraged. Moderate- to high-intensity programs include more than 25 hours of contact with the child and/or the family over a 6-month period; less than this does not result in sustained improvement.
What about the D and I categories?
Two interventions received a D recommendation: Use of aspirin for stroke prevention in women <55 years and for MI prevention in men <45 years, and teaching breast self-examination (BSE) to women. The BSE recommendation has been misinterpreted as recommending against women performing self-breast exams. The recommendation is against formalized teaching of the procedure by physicians, as this leads to increased false positives and no improvement in outcomes when compared to women performing exams on their own.
The list of interventions receiving an I recommendation include some services that are commonly offered in the belief that they are effective. The Task Force is attempting to develop methodologies to decrease the number of interventions that receive an I recommendation. Currently, about 40% of all recommendations end up in this category, and physicians and patients alike could use more guidance on them. This plethora of recommendations made with insufficient evidence reflects the “ready, shoot, aim” philosophy of American medicine. We tend to accept and adopt new interventions before they are proven effective. The I recommendations are valuable reminders that, while many interventions are in common use, we often do not know as much as we should about their benefits and harms.