Publication Date:
2014-12-17
Description:
We thank Dr Hardell for his comment 1 on our article concerning analyses regarding head position of mobile phone use. 2 In our analysis on ipsilateral use, we included cases who used their mobile phone on the same side as the tumour or on both sides of the head, cases who were not regular users (the reference category) and all their matched controls. In our analysis on contralateral use, we used cases who used their mobile phone on the opposite side as the tumour, cases who were not regular users (the reference category), and all their matched controls. The reference category was thus made by the same participants in the two separate analyses. These two separate analyses are thus not really ‘stratified’ analyses since the two subsamples are not disjoint. We chose this strategy because it seemed to us more natural and appropriate to keep matched sets...
Print ISSN:
1351-0711
Electronic ISSN:
1470-7926
Topics:
Medicine
Permalink
