How to Search Population Index
Population Index uses a very simple interface
that allows you to search the published database for 1986-2000 by
You can also search for any combination of these fields.
For example, you can search for papers by
Ansley Coale on mortality in the United States
published between 1990 and 1999 (you will find two).
Specifying a Query
To specify a query, you follow these simple steps:
If you want to erase every field to start a new query,
you press the button labelled "Clear".
- Type one or more search words in the
free text fields,
as explained in more detail in the discussion of each field.
Specify a year or range of years
if you want to restrict the search.
Specify a few options,
or accept the defaults provided in the query form.
Press the button labelled "Search" to submit your request
to our server.
Our search engine strips all punctuation (including
commas, periods, hyphens, and parentheses),
as well as apostrophes and diacritical marks.
We also ignore initials and a few common words
such as "and", "or", "of", and "the".
The output of a query includes the following:
If there are no entries in the database indexed under
one of the search words you typed,
you will see a message listing the word.
Hopefully this will help you recast the query.
An echo of your query exactly as the search engine has
interpreted it, so you can check that we got it right.
A statement of the number of hits,
or citations that contain all the words you
A listing of the corresponding citations (if you got
one or more hits).
If there are no hits, but no particular word is listed,
it means that the particular combination
of words you specified does not occur in the database.
Depending on the options you have chosen, your hits will either
be displayed in a short listing limited to bibliographic
information or in a longer listing which includes the abstract.
The listing includes up to 25 citations, listed by accession number in
reverse chronological order. If there are more than
25 hits, you see a button at the end of the listing
that can be pressed to get the next 25 hits. (The number
25 is a default, you can change the size of the batches
to any number between 1 and 100.)