Astudy in the 1980s found a link between drinking coffee and increased risk of pancreatic cancer. this study failed to consider the fact that many heavy coffee drinkers are also smokers. smoking, and not coffee, may have been what cause the increased risk of pancreatic cancer. in this example, smoking

a.
random variation

b.
a confounding variable

c.
a placebo

d.
an epidemic curve

1is a 2 is also ai am almost 100 sure

Waves i don’t know lol

The american academy of pediatrics created guidelines on bioethics, which is based on ethical, professional and legal standards for the betterment of the children. pediatricians are expected to promote high moral standards through compassion, sensitivity and commitment. moreover, bioethics recognizes the dignity and moral status of the child as he/she is increasingly involve in making choices in terms of his/her treatment or care.