Comparing fibromyalgia across different clinical settings: Is it apples and oranges, or oranges and tangerines?*

Comparing apples and oranges ...

The most comprehensive and often-cited statistic about the U.S. economy is gross domestic product (GDP), the sum of all goods and services produced in the United States. Estimates of GDP are the featured statistics in the National Income and Product Accounts, the construction of which involves the collection and aggregation of an immense amount of data. In the construction of real GDP, complica...

Comparing apples and oranges.

The most critical question when reading a meta-analysis report: Is it comparing apples with apples or apples with oranges?

OBJECTIVE While the number of meta-analyses published has increased recently, most of them have problems in the design, analysis, and/or presentation. An example of meta-analyses with a study selection bias is a meta-analysis of over 160,000 patients in 20 clinical trials, published in Eur Heart J in 2012 by van Vark, which concluded that the significant effect of renin-angiotensin-aldosterone ...

Adding Apples and Oranges

We define a unit system for end-user spreadsheets that is based on the concrete notion of units instead of the abstract concept of types. Units are derived from header information given by spreadsheets. The unit system contains concepts, such as dependent units, multiple units, and unit generalization, that allow the classification of spreadsheet contents on a more fine-grained level than types...

Carotenoids, immunity, and sexual selection: comparing apples and oranges?

Endler (1980) suggested that in a carotenoid-poor environment, carotenoid-dependent sexual ornaments indicate foraging ability, and hence, they can be used by females to gauge male quality. This idea led researchers to view female mate choice from a fresh perspective, and it gained a fair level of acceptance (Kodric-Brown 1989; Milinski and Bakker 1990; Houde and Torio 1992; Frischknecht 1993);...