The project has claimed large impacts on school enrolment, vaccination rates, mobile phone ownership, malaria prevalence, HIV testing, access to improved water and sanitation, use of insecticide-treated bednets, and several others, and asserted that it is a "solution to extreme poverty".
The authors, however, did find a statistically significant association between frequency of mobile phone use and prevalence of warmth, headaches and fatigue.
One of the most consistent associations with time spent on a cellphone or cordless phone was the prevalence of headaches (Table 2), specifically, minutes of cordless use daily (OR 1.74, CI 1.05, 2.90) and the number of long cellphone calls weekly (OR 2.40, CI 1.19, 4.83).
In the Swedish and Finnish studies, enquiries to obtain restricted data (over the telephone) from nonparticipants found a somewhat lower prevalence of phone use in those willing to give such data than in full participants (Lönn et al, 2004; Lahkola et al, 2005), but these results are of uncertain significance because only a minority of nonparticipants replied.
A case control study of 180 cases in Thailand (Kaufman et al, 2009), among participants with a low prevalence of phone use, found a slight non-significantly raised risk in people who had ever used a mobile phone.
The paper acknowledged limitations in using phone surveys to assess prevalence rates of diagnosed dementia, as did several experts in telephone interviews.
The paper itself questioned the reliability of using phone surveys to assess prevalence rates of diagnosed dementia, as did several experts in telephone interviews.
With the increasing prevalence of phone sensors, NFC, iBeacon products like Estimote and the Apple Watch, it's plausible that users could one day have their own Envoy ID, which automatically logs them in as visitors wherever they visit, keeping track of those visits.
"With the explosion of smart phone technology and the prevalence of social networking, the increase of "revenge porn" has become an alarming social phenomenon," the police department said in a statement.
During the first phone call (M3) the prevalence of anxiety was as high as 20.0%% but decreased over time (14.8 % at M12).
