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Influence of the penetration rate of mobile phones The authors assessed whether there is an influence of the penetration of mobile phone usage on national risk management policy. Univariate regression analysis was carried out between the proportions of mobile phone subscriptions per 100 inhabitants in each country (source: ITU, 2011)(5), and the prevalence of specific risk management policies split into five quintiles. The quintiles limits were [11.7�C87.1], [87.2�C106.5], [106.6�C117.3], [118.2�C131.4] and [132.3�C405.4]. In countries above third quintiles, the penetration rate of mobile phones was >100 %, which accounts to the multiple subscriptions. Four categories of policy actions showed a statistically significant association (p see more and fixed installation emissions: countries with the lowest penetration rate did not generally set exposure limits for mobile devices or fixed installations. All countries with higher penetration rates were similar. Provision of information on RF exposure by mobile devices: Only countries with the lowest subscription rates tended not to have provisions to inform purchasers of RF-emitting personal devices how to reduce their exposure. Provisions for specific diglyceride authorization prior to establishing fixed installations: countries with a greater penetration rate tend more frequently to have set authorization provisions prior to establishing fixed installations as opposed to countries where the subscription rate is low (N = 86, p http://www.selleckchem.com/products/ldn193189.html has been a vast expansion in the use of mobile communications networks over the past decade, with nearly 7 billion cell phone subscribers in 2014 (ITU). For most people, these networks generate the most frequently encountered source of electromagnetic radiation in the radiofrequency spectrum. Though exposure limits to avoid the acute effects of RF EMF have been developed by international bodies, these are not legally binding except where translated into national regulations. Moreover, the lack of clarity on the safety of long-term exposure at much lower levels has added to public concern over exposure, especially when non-voluntary, as with RF EMF from cellular base stations. WHO member states have stated their need for support to the effective function of their communication networks while protecting their citizens from known or possible health risks. In the absence of a global consensus on exposure limits and safety precautions, countries are adopting or adapting their own RF EMF safety policies.