Coverage bias: the impact of eligibility constraints on mobile phone-based sampling and data collection

Author(s):  
Helen Suich ◽  
Mandy Yap ◽  
Trang Pham
Author(s):  
Yuan Xin Wang

The article explores major dimensions of mobile phone behaviors in environmental communication and suggests that the impact of mobile phone use upon environmental communication could be explored from at least five dimensions including information seeking, propagation, interaction, organizing, and data collection behaviors. Association between mobile phone use and environmental communication is explained. Dimensions of mobile phone behaviors are illustrated through published studies of environment communication. Major issues related to the mobile phone use are also reviewed.


Author(s):  
Siti Mariana Ulfa

AbstractHumans on earth need social interaction with others. Humans can use more than one language in communication. Thus, the impact that arises when the use of one or more languages is the contact between languages. One obvious form of contact between languages is interference. Interference can occur at all levels of life. As in this study, namely Indonesian Language Interference in Learning PPL Basic Thailand Unhasy Students. This study contains the form of interference that occurs in Thai students who are conducting teaching practices in the classroom. This type of research is descriptive qualitative research that seeks to describe any interference that occurs in the speech of Thai students when teaching practice. Data collection methods in this study are (1) observation techniques, (2) audio-visual recording techniques using CCTV and (3) recording techniques, by recording all data that has been obtained. Whereas the data wetness uses, (1) data triangulation, (2) improvement in perseverance and (3) peer review through discussion. Data analysis techniques in this study are (1) data collection, (2) data reduction, (3) data presentation and (4) conclusions. It can be seen that the interference that occurs includes (1) interference in phonological systems, (2) interference in morphological systems and (3) interference in syntactic systems. 


2019 ◽  
Author(s):  
Alice Ndwiga

BACKGROUND INTRODUCTION: The Kenyan constitution seeks to guarantee every citizen the right to quality healthcare services. Quite often this delivery is hampered by geographical location, socio-economic statuses among other factors. The country has a high mobile phone penetration rate. Digitalization of the healthcare sector is a vital aspect that contributes to effective delivery of care services. This study set out to assess the impact of mobile technology in closing the gaps within the health care service delivery. The objective of the study was to investigate the impact of mobile phone technology in bridging the gap in healthcare service delivery in Kenya with a focus on Nairobi, Kibera informal settlements. Hypothesis testing using P-value of 0.05 also showed that use of mobile phone technology positively impacted the delivery of healthcare services. OBJECTIVE The objective of the study was to investigate the impact of mobile phone technology in bridging the gap in healthcare service delivery in Kenya with a focus on Nairobi, Kibera informal settlements. Hypothesis testing using P-value of 0.05 also showed that use of mobile phone technology positively impacted the delivery of healthcare services. METHODS The target population were patients visiting Médecins Sans Frontières (MSF) clinic in Kibera informal settlements. A cross-sectional study design was employed. Purposive and simple random sampling method was used to select the study sample of 210 participants and 3 healthcare providers. Data were collected using survey questionnaire that was provider-administered and Data were analyzed using SPSS version. RESULTS The characteristics of the respondents were general (mean age, education level, social economic status) to only patients who visited the clinics for HIV tests and other related services such as going for ARVs. The main findings showed that 66.12% of the respondents (14.29% strongly agreed + 55.24% agreed) that the use of mobile phone technology improved their access to healthcare services. Using chi square, there was a statistical difference due to the positive impact of mobile technology on healthcare delivery (p=0.05). CONCLUSIONS The study findings showed that 66.12% of the respondents agreed that the use of mobile phone technology and SMS improved their access to healthcare services. The results hypothesis also proved that use of mobile phone technology positively impacts the delivery of healthcare services.


2021 ◽  
pp. jech-2020-216108 ◽  
Author(s):  
Malcolm Campbell ◽  
Lukas Marek ◽  
Jesse Wiki ◽  
Matthew Hobbs ◽  
Clive E Sabel ◽  
...  

BackgroundThe COVID-19 pandemic has asked unprecedented questions of governments around the world. Policy responses have disrupted usual patterns of movement in society, locally and globally, with resultant impacts on national economies and human well-being. These interventions have primarily centred on enforcing lockdowns and introducing social distancing recommendations, leading to questions of trust and competency around the role of institutions and the administrative apparatus of state. This study demonstrates the unequal societal impacts in population movement during a national ‘lockdown’.MethodsWe use nationwide mobile phone movement data to quantify the effect of an enforced lockdown on population mobility by neighbourhood deprivation using an ecological study design. We then derive a mobility index using anonymised aggregated population counts for each neighbourhood (2253 Census Statistical Areas; mean population n=2086) of national hourly mobile phone location data (7.45 million records, 1 March 2020–20 July 2020) for New Zealand (NZ).ResultsCurtailing movement has highlighted and exacerbated underlying social and spatial inequalities. Our analysis reveals the unequal movements during ‘lockdown’ by neighbourhood socioeconomic status in NZ.ConclusionIn understanding inequalities in neighbourhood movements, we are contributing critical new evidence to the policy debate about the impact(s) and efficacy of national, regional or local lockdowns which have sparked such controversy.


2021 ◽  
Vol 13 (6) ◽  
pp. 3320
Author(s):  
Amy R. Villarosa ◽  
Lucie M. Ramjan ◽  
Della Maneze ◽  
Ajesh George

The COVID-19 pandemic has resulted in many changes, including restrictions on indoor gatherings and visitation to residential aged care facilities, hospitals and certain communities. Coupled with potential restrictions imposed by health services and academic institutions, these changes may significantly impact the conduct of population health research. However, the continuance of population health research is beneficial for the provision of health services and sometimes imperative. This paper discusses the impact of COVID-19 restrictions on the conduct of population health research. This discussion unveils important ethical considerations, as well as potential impacts on recruitment methods, face-to-face data collection, data quality and validity. In addition, this paper explores potential recruitment and data collection methods that could replace face-to-face methods. The discussion is accompanied by reflections on the challenges experienced by the authors in their own research at an oral health service during the COVID-19 pandemic and alternative methods that were utilised in place of face-to-face methods. This paper concludes that, although COVID-19 presents challenges to the conduct of population health research, there is a range of alternative methods to face-to-face recruitment and data collection. These alternative methods should be considered in light of project aims to ensure data quality is not compromised.


Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3367 ◽  
Author(s):  
Karl Stein ◽  
Moe Tun ◽  
Keith Musser ◽  
Richard Rocheleau

Battery energy storage systems (BESSs) are being deployed on electrical grids in significant numbers to provide fast-response services. These systems are normally procured by the end user, such as a utility grid owner or independent power producer. This paper introduces a novel research project in which a research institution has purchased a 1 MW BESS and turned ownership over to a utility company under an agreement that allowed the institution to perform experimentation and data collection on the grid for a multi-year period. This arrangement, along with protocols governing experimentation, has created a unique research opportunity to actively and systematically test the impact of a BESS on a live island grid. The 2012 installation and commissioning of the BESS was facilitated by a partnership between the Hawaii Natural Energy Institute (HNEI) and the utility owner, the Hawaiian Electric and Light Company (HELCO). After the test period ended, HELCO continued to allow data collection (including health testing). In 2018, after 8500 equivalent cycles, the BESS continues to operate within specifications. HNEI continues to provide HELCO with expertise to aid with diagnostics as needed. Details about the BESS design, installation, experimental protocols, initial results, and lessons learned are presented in this paper.


Epidemiology ◽  
2015 ◽  
Vol 26 (2) ◽  
pp. 223-228 ◽  
Author(s):  
Amy Wesolowski ◽  
Wendy Prudhomme O’Meara ◽  
Andrew J. Tatem ◽  
Samson Ndege ◽  
Nathan Eagle ◽  
...  

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