More about AND

This Venn diagram illustrates the use of the Boolean operator AND -- the colored area represents the result of the Boolean operation.

In this case multiple AND operators were used to combine more than one concept or term. Only records containing all the terms will be retrieved.

And here's how the search strategy would look using Ovid MEDLINE:

1. Diabetes Mellitus, Type II (33995 records)
2. obesity (59850 records)
3. child (1035163)
4. 1 and 2 and 3 (315 records)


Note: I used MeSH terms in this example.