I do not know about you; but when I look at sample size determination formulae, they appear gibberish. It is like “the more you look, the less you see”! I signed up for the role of a clinician, not a statistician; yet reviewers of research proposals have a knack for insisting that I include sample size calculation formula in my research proposal, that the formula must  be appropriate and that the calculation must be error free. A number of times, I must confess, I have so frustrated reviewers on sample size issue that they told me in annoyance (so I perceived) to consult a statistician!

This blog is part of our series celebrating World Health Day 2017. This year's theme is Depression: Let's Talk and we're showcasing inspiring innovations addressing depression across Africa - the Aro Primary Care Mental Health Programme.

In Nigeria, if you listen to the radio, attend community theater performances, or eavesdrop on market chatter, you might hear the name “Aro” come up. But Aro is not a pop star, athlete or politician — it is a neuropsychiatric hospital that’s winning a lot of fans in Africa and recognition from healthcare experts around the world.

 Mental illness is dreaded, stigmatized and burdensome, yet the research enterprise has not focused much attention on it in Nigeria. The few existing studies (Jack-ide et al 2013, Adelakun et 2001, Leighton et al, 1963, ) have not considered the critically important role of the family which to a large extent determines  the outcome of the illness as has been recognized in countries such as the United State Of America ( Heru 2000, Lefley 1996, Biegel, Sales and Schultz 1991).

Problems with sleep are a common and widespread occurrence among individuals all over the world. Most adults have experienced at least one night of unsatisfactory sleep. While some people experience poor sleep occasionally and are not bothered, some find it very troubling and seek help. Every health care professional has had to deal with a patient with sleep complaints at one time or the other.