The cause of irritable bowel syndrome is unknown. Antibiotic-associated colitis usually occurs in people receiving antibiotics. Inflammatory bowel diseases is a common cause of bowel inflammation and low back pain. There are two major forms: Crohns disease and ulcerative colitis. The causes are unknown. â¢Genetic: There is a high similarity of symptoms among identical twins, particularly with Crohn disease.
An effective dose (ED) in pharmacology is the dose or amount of drug that produces a therapeutic response or desired effect in some fraction of the subjects taking it.D50 [edit]. The median effective dose is the dose that produces a quantal effect (all or nothing) in 50% of the population that takes it (median referring to the 50% population base). It is also sometimes abbreviated as the ED50, meaning effective dose, for 50% of people receiving the drug.
Studies show childhood whooping cough vaccines are effective. In general, DTaP vaccination is effective for up to 8 or 9 out of 10 children who receive it, but protection fades over time. About 7 out of 10 children are fully protected 5 years after getting their last dose of DTaP.In general, childhood whooping cough vaccines (called DTaP) are effective for 8 or 9 out of 10 children who receive them.Among children who get all 5 doses of DTaP vaccine on schedule, effectiveness is very high within the year following the 5th dose â nearly all children (98 out of 100) are fully protected.bout 7 out of 10 children are fully protected 5 years after getting their last dose of DTaP. In general, childhood whooping cough vaccines (called DTaP) are effective for 8 or 9 out of 10 children who receive them.