Many countries have no reliable index at all.

"The jury... is a significant and reliable objective index of contemporary values because it is so directly involved" in the criminal justice system.

The magazine's annual P/A Awards program provided a reliable index of changing taste.

I do believe that it is a reliable index of his growing frustration.

Raw death numbers may not be a reliable index of evil, but they still have value as a guide to action.

PAPER magazine, the guide to downtown fashion and night life, has always been a reliable index of what's next.

The wine trade regards the contest as a reliable index of New York regional development, styles, quality and leadership.

According to official statistics, the average Russian woman has between four and five abortions in her lifetime - a reliable index of human weakness and misery.

But until October 2004, justices were not identified by name, making it impossible to construct a reliable index of judicial wit.

As a result, the number of submitted plans provide a reliable index of conversion activity six to nine months in the future.