In many of the other cases, research was too weak to draw firm conclusions.

There is insufficient information to date on which to make firm conclusions.

It was too early to reach firm conclusions as to the direction's effectiveness.

But the studies involved too few patients to draw firm conclusions.

Another official said it was too early to draw many firm conclusions about the election results.

But another season is needed to make firm conclusions because the study area is so large.

But so far too little evidence is available to draw firm conclusions.

It will be months before the investigators reach firm conclusions about what caused the accident.

Thus the equation cannot be used to draw firm conclusions of any kind.

Some experts were skeptical, saying the number of patients in the two studies was too small to draw firm conclusions.