You’ve seen the scenario on “Law and Order” many times: the defense lawyer tosses out a wild accusation that the person on the witness stand (or someone else related to the case) is the real killer – with no evidence whatsoever behind it. Jurors have now heard about an alternative suspect for the crime. The judge proclaims that the jurors “must disregard the last statement.” But, can they?
Berk Ozler's blog
Today's post comes from guest bloggers Hanan Jacoby and Ghazala Mansuri...
One of the most important things while designing an intervention is to try to ensure that your study will have enough statistical power to test the hypotheses you're interested in. Picking a large enough sample is one of a variety of things to increase power. Another is block stratified randomization, of which paired randomization is the extreme.
In research, as in life, first impressions matter a lot. Most sensible people don’t go on a first date disheveled, wearing sweatpants and their favorite raggedy hoodie from their alma mater, but rather wait to break those out well into a relationship. Working papers are the research equivalent of sweatshirts with pizza stains on them, but we wear them on our first date with our audience.
A piece in this week’s Nature reports that a large vaccine trial for HPV, which can cause cervical cancer, is in trouble in India due to serious violations of ethical rules and informed consent.
Last week I wrote about “treatment as prevention.” Because being treated by a combination of ARV drugs effectively prevents the transmission of HIV from an infected person to his (her) uninfected partner, the idea is that if we were to test as many people as possible, find out who is infected, and offer them ARVs, we could make significant headway in preventing the spread of HIV. In other words, test and treat.
Last month, NIAID released news that treating HIV-infected partners in mostly heterosexual HIV-discordant couples at 13 sites around the world reduced HIV transmissi
- Impact evaluation
I was circumcised in the hospital as a very young infant. Most children do get circumcised in Turkey, although I suspect that many are not as lucky as I was, including my younger brother, who went through the ordeal when he was around six years-old. I remember him in some pain and discomfort for what seemed like a long period of time to me at the time, even though it was probably no longer than a few weeks if not days…