Meanings of sparse evidence in English

Even worse, there was sparse evidence that the public was particularly interested.

Given the sparse evidence from clinical trials, we heavily rely on clinical experience when it comes to managing chronic ulcers infected with PA.

The full-blown scare campaign was based on sparse evidence, to put it lightly, and much of the media dismissed it as a cynical tactic.

Sparse evidence indicates that resuscitation with hypertonic saline results in less perioperative complications, ICU days and mortality in selected patients.