Browsing by Author "Inyang, I"
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- ItemMobile phones and brain tumours: a review of epidemiological research.(2009-02-25) Croft, R J; McKenzie, R J; Inyang, I; Benke, G P; Anderson, V; Abramson, M JThere has been a great deal of public concern regarding the possibility that the use of mobile phone related technologies might result in adverse health effects Corresponding to this there has been substantial epidemiological research designed to determine whether the use of mobile phones MP has any effect on health and in particular whether it increases the risk of developing head and neck tumours Such literature is particularly heterogeneous which makes it difficult to pool in a meta analysis This paper thus reviews the epidemiological literature pertaining to the use of mobile phones and mobile phone related technologies and head and neck tumours in an attempt to consolidate the various reports Although there have been individual reports of associations between MP use and tumours this research is not consistent and on balance does not provide evidence of an association There are reports of small associations between MP use ipsilateral to the tumour for greater than 10 years for both acoustic neuroma and glioma but the present paper argues that these are especially prone to confounding by recall bias The reported associations are in need of replication with methods designed to minimise such bias before they can be treated as more than suggestive
- ItemUse of hardware modified phones for exposure assessment in health studies in Australia: verification of compliance with standards.(2009-07-23) Inyang, I; Benke, G; McKenzie, R; Abramson, MMost epidemiological studies investigating health effects of mobile telephone use have been criticised for poor quality of exposure assessment Most used questionnaires which have limited precision to assess exposure Clearly more relevant and direct methods of exposure assessment are needed We describe the calibration of hardware modified phones HMPs for exposure assessment and dosimetry and verified their compliance with Australian and international standards Specific energy absorption rate SAR values at various tilts and rotations and their combinations were obtained for the HMPs using a DASY3 SAR measuring system Calibration involved placing HMPs on human head phantoms and taking measurements at 900 and 1800 MHz bands on right and left sides of the phantom At 900 MHz the maximum SAR obtained with HMPs at the touch position was 0 9 W kg and 0 4 W kg at 30 degrees tilt but at 1800 MHz SAR at the touch and 30 degrees tilts were 1 1 W kg and 1 3 W kg respectively Whilst tilt and rotation each had an effect on SAR at constant frequency no interaction was observed with rotation and frequency however one was observed between tilt and frequency At 1800 MHz mean SAR at 30 degrees tilt was 0 22 W kg higher 95 CI 0 15 0 30 than at 0 degrees whereas at 900 MHz mean SAR at 30 degrees tilt was 0 60 W kg lower 95 CI 0 52 0 67 than at 0 degrees Our results indicated that tilts influence SAR more than rotations SAR values obtained at both 900 1800 MHz for the HMPswere well below ICNIRP limits for the general public The phones were compliant with both international and Australian standards
- ItemUse of mobile phones and changes in cognitive function in adolescents.(2010-11-15) Thomas, S; Benke, G; Dimitriadis, C; Inyang, I; Sim, M R; Wolfe, R; Croft, R J; Abramson, M JSeveral studies have investigated the impact of mobile phone exposure on cognitive function in adults However children and adolescents are of special interest due to their developing nervous systems