OMbook_glossary

The Minimal Important Difference or sometimes Mimum Important Change or Minimal|Minimum Clinically Important Difference (MID/MCID)...

Mokken scaling is one of a number of "Item Response Theory" (IRT) ways of analysing...

A time series concept, pretty technical but does come up in our fields. Details A Markov, or...

A method, similar to exploratory factor analysis, that takes a dataset of values for a...

To me this is a truly terrible name. It describes the situation in which...

Exactly what it says really. Why put it here when it's so obvious that it...

This is a pretty cutting edge bit if statistics but the idea is very important...

What it says really: the mean of the squared deviation of a set of values...

"Mapi Research Trust is a non-profit organization dedicated to improving patients’ quality of life by...

No, not a boring relationship, hm, well, sort of. It's a relationship between two...

I used to think this was a synonym for, or a rather pompous term for,...

Often contrasted with Cronbach's coefficient alpha, thus creating a lovely "alpha and omega" of internal...

This is an interesting phenomenon which should perhaps be called the multiple tests issue but...

These are statistical methods to handle non-independence of observations. For our purposes their great...

In Counselling and Psychotherapy a measure generally refers to a standardised way of gathering data/information...

Term often used pejoratively to denote much that is bad about modern medicine affecting the...

The median is the score in a set of scores that divides the distribution in...

In colloquial language we use average to describe a norm or a “typical” set of...

This is an easy one! Just the smallest value of a variable in any...

This is an easy one! Just the largest value of a variable in any...

In Counselling and Psychotherapy, modality generally refers to the theoretical school of practice that is...

The mode is the most frequently occurring value in a set of data. For example,...

Data are MCAR when there are no shared effects linking missingness on one variable and...

This is a sophisticated method to estimate the impact of missing values in data, particularly...

In outcome/change measurement missing values are common and have to be considered carefully. Reports...