Cancer risk has no effect on mortality

Collision Mortality Has No Discernible Effect on Population Trends of North American Birds

Avian biodiversity is threatened by numerous anthropogenic factors and migratory species are especially at risk. Migrating birds frequently collide with manmade structures and such losses are believed to represent the majority of anthropogenic mortality for North American birds. However, estimates of total collision mortality range across several orders of magnitude and effects on population dy...

Anterior Cruciate Ligament Reconstruction with Hamstring Tendons Has no Deleterious Effect on Hip Extension Strength

Background: Hamstring tendons are secondary hip extensors. Their harvest for graft in anterior cruciate ligament(ACL) reconstruction may create deleterious effect on hip extension strength. This is of particular importance in sportsthat need powerful hip extension force like climbing and sprinting. Due to scarcity of a comprehensive study in thisarea, we designed this prospect...

ALDH2 promoter polymorphism has no effect on the risk for alcoholism.

AIM To test for the possible association between mitochondrial aldehyde dehydrogenase (ALDH2) promoter polymorphism and alcoholism. METHODS Genotyping to identify the polymorphisms in 515 alcoholic patients and 361 normal controls was performed. RESULTS There were no significant differences between the genotype and allele frequencies of the -357A/G polymorphism in alcoholics and normal cont...

Stretching before or after exercising has no effect on muscle soreness or risk of injury.

ketamine has no pre-emptive analgesic effect

previous studies have suggested that ketamine, an n-methyl-d-aspartate (nmda) receptor antagonist, provides a pre-emptive analgesic effect and pre-emptive analgesia improves postoperative pain management. the aim of this study was to determine the effict of pre-incisional vs. post-incisional intravenous low dose of racemic ketamine in postoperative pain in children undergoing inguinal hernia re...