11.   The main dependent variables in this study are nonetheless identical to those used in the previous study, thus direct comparisons can still be made between the two studies.

12.   The sensitivity of reproducibility of the assay had been established previously by direct comparison with the standard microneutralisation test and with international reference sera.

13.   Two direct comparisons of the effect on patency of heparin and aspirin as adjunctive therapy to thrombolysis are equally difficult to interpret.

14.   The implications of these findings for comparisons with non-traditional students have not really been systematically explored, and a number of factors make direct comparison difficult.

15.   In this way, you reduce the impression that you are judging writing by a known literary writer as unsuccessful in direct comparison with your own capabilities or achievements.

16.   The UNECE report warns that direct comparisons between countries should be treated with caution, and that a number of other factors may account in part for defoliation.

17.   One source of inverse Laplace transforms is of course direct comparison with known Laplace transforms.

18.   At a news conference in Hawaii on Sunday night, Hammerschmidt emphasized that investigators were not drawing direct comparisons between the two incidents.

19.   Because different exchanges measure their trading volumes in different ways, it is difficult to make direct comparisons.