Sentence examples for difficult to ascertain accurately from inspiring English sources

The incidence of meningococcal disease worldwide is difficult to ascertain accurately because of wide variation in surveillance in different regions of the world, together with under-reporting from many developing nations.

Whether or not this was accurate was, like his age, difficult to ascertain.

score difficult to ascertain.

The net effect of their impact is difficult to ascertain.

How widespread these cases are is difficult to ascertain.

Basic Contradictions Just who David Chang is has been difficult to ascertain.

It is Iran -- not Iraq -- whose true policy on the issue has been difficult to ascertain.

It is difficult to ascertain from the volunteers which ones might seek such a role.

It was difficult to ascertain who was bidding--horse collectors gesture discreetly, to avoid arousing the competition.

The effects of human exposure to chemicals in consumer products are difficult to ascertain and are subject to dispute.

Environmental Impact Unknown 8. (C) The effects of the Myitsone project on the regional environment are difficult to ascertain.