Case-control studies of leukaemia clusters.

Case-control studies of leukaemia clusters.

analysis of reading comprehension needs of the students of paramedical studies: the case of the students of health information management (him)

چکیده ندارد.

Immunological studies in a case of T-cell leukaemia.

The blood lymphocytes from a case of prolymphocytic leukaemia were subjected to a battery of different tests in order to establish as certainly as possible their T or B cell type of origin. The results of the tests for surface markers indicated the T-cell origin of the leukaemic cells in this patient, and this provided a good opportunity to determine the participation of T cells in the various ...

Selection bias and its implications for case-control studies: a case study of magnetic field exposure and childhood leukaemia.

Based on the epidemiological association between residential exposure to extremely low frequency-magnetic fields (ELF-MF) and childhood leukaemia, the International Agency for Research on Cancer classified ELF-MF as a possible human carcinogen. Since clear supportive laboratory evidence is lacking and biophysical plausibility of carcinogenicity of MFs is questioned, a causal relationship betwee...

Designing case-control studies.

Identification of confounding factors, evaluation of their influence on cause-effect associations, and the introduction of appropriate ways to account for these factors are important considerations in designing case-control studies. This paper presents designs useful for these purposes, after first providing a statistical definition of a confounding factor. Differences in the ability to identif...