Medicine by the Numbers

From The NNT Group (, these provide short, concise, evidence-based ratings of therapies, diagnostic tests, and risk assessments commonly used in family medicine. These rating are based on patient-important benefits and harms.

Jan 1, 2021 Issue
Effectiveness of Alarm Therapy in the Treatment of Nocturnal Enuresis in Children
This review concluded that alarm therapy appears to be effective for treating nocturnal enuresis in children, but it is uncertain if it is more effective than other interventions.

Dec 1, 2020 Issue
Antibiotics for Uncomplicated Diverticulitis
Learn more about the benefits and harms of antibiotics for uncomplicated diverticulitis.

Nov 1, 2020 Issue
Antibiotics for Acute Bronchitis
Acute bronchitis is a lower respiratory tract infection, most commonly viral, that accounts for a significant number of health care visits. This review discusses the benefits and harms of antibiotics for acute bronchitis or acute productive cough.

Oct 1, 2020 Issue
Antibiotic Prophylaxis for Operative Vaginal Delivery
Current guidelines from the World Health Organization do not recommend routine antibiotic prophylaxis for operative vaginal birth because of insufficient evidence of effectiveness.

Sep 1, 2020 Issue
Aspirin after Acute Ischemic Stroke
Learn more about the effect of aspirin therapy given within 48 hours of acute ischemic stroke in reducing the risk of death, dependence, or recurrent stroke, and the chance of complete recovery.

Aug 1, 2020 Issue
Fetal Fibronectin Testing in Threatened Preterm Labor
Fetal fibronectin testing is a common clinical test, performed via cervicovaginal secretion swab after 22 weeks of pregnancy, and is used to identify women at increased risk for preterm delivery. Learn more about the benefits and harms of fetal fibronectin testing in threatened preterm labor.

Jul 1, 2020 Issue
Vitamin D Supplementation and All-Cause Mortality
Observational studies have shown that those with low vitamin D levels have higher cancer and cardiovascular mortality. Read more to learn about the effect of vitamin D supplementation on all-cause mortality.

Jun 1, 2020 Issue
Noninvasive Positive Pressure Ventilation for Exacerbation of Chronic Obstructive Pulmonary Disease
Chronic obstructive pulmonary disease (COPD) is a progressive lung disease characterized by hyperinflation of the lungs, including emphysema and chronic bronchitis. Learn more about the benefits and harms of using noninvasive positive pressure ventilation for exacerbation of COPD.

May 1, 2020 Issue
Tranexamic Acid for Postpartum Hemorrhage
Postpartum hemorrhage is the most common cause of maternal death worldwide. Tranexamic acid is an antifibrinolytic agent that has shown to decrease bleeding in surgical patients and all-cause death in trauma patients. Does early administration of tranexamic acid reduce the rate of death and hysterectomy in patients with postpartum hemorrhage? Find out more.

Apr 1, 2020 Issue
Benzodiazepines for Panic Disorder in Adults
Should benzodiazepeines continue to be prescribed during the initiation phase of selective serotonin reuptake inhibitors for acute relief of panic attacks? Find out more.

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