The random allocation process: two things you need to know

The random allocation process: two things you need to know

Good methods of generating a random allocation sequence include using a randomnumbers table or a computer software program that generates the random sequence. There are manual methods of achieving random allocation such as tossing a coin, drawing lots or throwing dice. However, these manual methods in practice often become nonrandom, are difficult to implement and do not leave an audit trail. T...

10 Things You Need to Know About Sanitation

1. What do we mean by "sanitation"? The first challenge for countries seeking to solve the problem of access to sanitation is to define what “sanitation" really means. The second challenge is to decide what aspects are the most important. In other words, what aspect of the problem is going to be dealt with as a priority. This problem is not a simple one and many professionals confuse the two st...

The Menopause : What you Need to Know

The only trouble with Richard Smith, for 13 years Editor of the British Medical Journal, is that he writes well but tends to repeat himself. Editors, and ex-editors, are a small group in the medical world, but we like to think we have been influential. This book is a series of stories of Richard Smith’s interaction with prospective authors, medical researchers of all sorts, the authorities of t...

The four things you need to know about the GEOTECHNICAL PROPERTIES OF LUNAR SOIL

What you need to know about ... concussion.