Retrospective analysis of more than 4000 patients undergoing endoscopic control between 1981 and 1987 showed an incidence of 3.5% for pseudomelanosis coli.

The study, an analysis of 4,582 patients in 24 drug trials, is the first widely published evaluation of data that the agency reviewed that year.

A retrospective analysis of 109 patients with nonsmall cell lung cancer.

Altman E, Cadman E: An analysis of 1539 patients with cancer of unknown primary site.

A retrospective analysis of 273 patients observed at a single center.

Retrospective analysis of 67 patients concluded graft survival was similar between reduction and discontinuation of agents.

Interim analysis of 125 patients suggested the most effective treatment would be a combination regimen.

Nitrazepam therapy compared with other drug therapies increases risk of death when used for intractable epilepsy in an analysis of 302 patients.

The study was based on an analysis of 2,455 patients who survived a first heart attack.

In 1993, in an analysis of 210 patients, Press et al .