Carlos Ochoa
Biographic Data
| ID | 3743145 |
|---|---|
| NAME | Carlos Ochoa |
| GIVEN NAMES | Carlos |
| FAMILY NAME | Ochoa |
| SIGNATURE | OCHOA C |
| AFFILIATIONS | Netquest, Barcelona, Spain |
| ORCID | 0000-0002-4841-9615 |
| VERIFIED | Yes |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 58 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1984 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 4 |
Tracing ChatGPT Use in Spain: Differences Among Population Groups in Adoption and Engagement
Artificial intelligence (AI) tools are transforming how people work, learn and create, reshaping everyday digital interactions. Among them, ChatGPT stands out as a particularly disruptive innovation, reaching 100 million users within two months of its launch and becoming the fastest‐growing digital application in history. Understanding how ChatGPT is being adopted—and whether adoption differs across population groups—is essential for anticipating…
Climate, geography and socioeconomic vulnerability and emergency care accessibility in Nepal, 2022: A high-resolution geospatial analysis of inequalities
BACKGROUND: Strengthening emergency care systems could reduce death and disability in low- and middle-income countries (LMICs), yet many struggle to provide timely, high-quality care. LMICs also face growing risks from climate-related shocks and mass casualty events. This study identifies unmet emergency care needs in Nepal-one of the world's most climate-vulnerable countries-using high-resolution geospatial data to estimate socioeconomic and cli…
The utility of digital trace data to understand how people search for jobs online
This study explores the utility of metered data, a specific form of digital trace data, for analyzing online job-seeking behaviors in Spain. Using nine months of data from 600 participants, it evaluates which job search-related concepts can be measured and the impact of two factors on the resulting indicators: the devices used to gather the data and the data collection period. Findings reveal that metered data can effectively operationalize conce…
A practical guide to (successfully) collect and process images through online surveys
Asking online survey respondents to share images is a practice that has gained notoriety recently. Although this collecting strategy may offer many advantages, it requires researchers to know how to operationalize, collect, process, and analyze this type of data, which is not yet an extended expertise among survey practitioners. This paper aims to guide researchers inexperienced in image analysis by presenting the main steps involved in the proce…
Neonatal outcomes according to different degrees of maternal morbidity: Cross-sectional evidence from the Perinatal Information System (SIP) of the CLAP network
Background The burden of maternal morbidity in neonatal outcomes can vary with the adequacy of healthcare provision and tool implementation to improve monitoring. Such information is lacking in Latin American countries, where the decrease in severe maternal morbidity and maternal death remains challenging.Objectives To determine neonatal outcomes according to maternal characteristics, including different degrees of maternal morbidity in Latin Ame…
Willingness to Participate in a Metered Online Panel
Passive data from a tracking application (or "meter") installed on participants' devices to register the URLs visited have great potential for studying people's online activities. However, given privacy concerns, obtaining cooperation installing a meter can be difficult and lead to selection bias. Therefore, in this article, we address three research questions: (1) To what extent are panelists willing to install a meter? (2) On which devices do t…
Do online access panels need to adapt surveys for mobile devices
Purpose – Despite the quick spread of the use of mobile devices in survey participation, there is still little knowledge about the potentialities and challenges that arise from this increase. The purpose of this paper is to study how respondents’ preferences drive their choice of a certain device when participating in surveys. Furthermore, this paper evaluates the tolerance of participants when specifically asked to use mobile devices and carry o…
Using Passive Data From a Meter to Complement Survey Data in Order to Study Online Behavior
Surveys have been used as main tool of data collection in many areas of research and for many years. However, the environment is changing increasingly quickly, creating new challenges and opportunities. This article argues that, in this new context, human memory limitations lead to inaccurate results when using surveys in order to study objective online behavior: People cannot recall everything they did. It therefore investigates the possibility …
What are the Links in a Web Survey Among Response Time, Quality, and Auto-Evaluation of the Efforts Done
Evaluating the quality of the data is a key preoccupation for researchers to be confident in their results. When web surveys are used, it seems even more crucial since the researchers have less control on the data collection process. However, they also have the possibility to collect some paradata that may help evaluating the quality. Using this paradata, it was noticed that some respondents of web panels are spending much less time than expected…
Acequias and the Effects of Climate Change
Traditional forms of acequia irrigation can be combined with ground based and remote sensing snow measurements and snowmelt runoff modeling to better estimate runoff volumes now and in the future under conditions of climate change. The experience gained over 400 years of irrigating small fields strongly binds communities and strengthens the resolve of acequia associations to contest challenges presented by climate change. Increased density of sno…
Maca (Lepidium meyenii walp.; Brassicaceae): A nutritious root crop of the central andes
Solarium hygrothermicum, an endangered cultivated potato species
Solatium hygrothermicum, new potato species cultivated in the lowlands of Peru
Using Passive Data From a Meter to Complement Survey Data in Order to Study Online Behavior
Surveys have been used as main tool of data collection in many areas of research and for many years. However, the environment is changing increasingly quickly, creating new challenges and opportunities. This article argues that, in this new context, human memory limitations lead to inaccurate results when using surveys in order to study objective online behavior: People cannot recall everything they did. It therefore investigates the possibility …
Do online access panels need to adapt surveys for mobile devices
Purpose – Despite the quick spread of the use of mobile devices in survey participation, there is still little knowledge about the potentialities and challenges that arise from this increase. The purpose of this paper is to study how respondents’ preferences drive their choice of a certain device when participating in surveys. Furthermore, this paper evaluates the tolerance of participants when specifically asked to use mobile devices and carry o…
What are the Links in a Web Survey Among Response Time, Quality, and Auto-Evaluation of the Efforts Done
Evaluating the quality of the data is a key preoccupation for researchers to be confident in their results. When web surveys are used, it seems even more crucial since the researchers have less control on the data collection process. However, they also have the possibility to collect some paradata that may help evaluating the quality. Using this paradata, it was noticed that some respondents of web panels are spending much less time than expected…
Acequias and the Effects of Climate Change
Traditional forms of acequia irrigation can be combined with ground based and remote sensing snow measurements and snowmelt runoff modeling to better estimate runoff volumes now and in the future under conditions of climate change. The experience gained over 400 years of irrigating small fields strongly binds communities and strengthens the resolve of acequia associations to contest challenges presented by climate change. Increased density of sno…
Solatium hygrothermicum, new potato species cultivated in the lowlands of Peru
Solarium hygrothermicum, an endangered cultivated potato species
Maca (Lepidium meyenii walp.; Brassicaceae): A nutritious root crop of the central andes
Acequias and the Effects of Climate Change
Traditional forms of acequia irrigation can be combined with ground based and remote sensing snow measurements and snowmelt runoff modeling to better estimate runoff volumes now and in the future under conditions of climate change. The experience gained over 400 years of irrigating small fields strongly binds communities and strengthens the resolve of acequia associations to contest challenges presented by climate change. Increased density of sno…
What are the Links in a Web Survey Among Response Time, Quality, and Auto-Evaluation of the Efforts Done
Evaluating the quality of the data is a key preoccupation for researchers to be confident in their results. When web surveys are used, it seems even more crucial since the researchers have less control on the data collection process. However, they also have the possibility to collect some paradata that may help evaluating the quality. Using this paradata, it was noticed that some respondents of web panels are spending much less time than expected…
Do online access panels need to adapt surveys for mobile devices
Purpose – Despite the quick spread of the use of mobile devices in survey participation, there is still little knowledge about the potentialities and challenges that arise from this increase. The purpose of this paper is to study how respondents’ preferences drive their choice of a certain device when participating in surveys. Furthermore, this paper evaluates the tolerance of participants when specifically asked to use mobile devices and carry o…
Using Passive Data From a Meter to Complement Survey Data in Order to Study Online Behavior
Surveys have been used as main tool of data collection in many areas of research and for many years. However, the environment is changing increasingly quickly, creating new challenges and opportunities. This article argues that, in this new context, human memory limitations lead to inaccurate results when using surveys in order to study objective online behavior: People cannot recall everything they did. It therefore investigates the possibility …
Willingness to Participate in a Metered Online Panel
Passive data from a tracking application (or "meter") installed on participants' devices to register the URLs visited have great potential for studying people's online activities. However, given privacy concerns, obtaining cooperation installing a meter can be difficult and lead to selection bias. Therefore, in this article, we address three research questions: (1) To what extent are panelists willing to install a meter? (2) On which devices do t…
Neonatal outcomes according to different degrees of maternal morbidity: Cross-sectional evidence from the Perinatal Information System (SIP) of the CLAP network
Background The burden of maternal morbidity in neonatal outcomes can vary with the adequacy of healthcare provision and tool implementation to improve monitoring. Such information is lacking in Latin American countries, where the decrease in severe maternal morbidity and maternal death remains challenging.Objectives To determine neonatal outcomes according to maternal characteristics, including different degrees of maternal morbidity in Latin Ame…
A practical guide to (successfully) collect and process images through online surveys
Asking online survey respondents to share images is a practice that has gained notoriety recently. Although this collecting strategy may offer many advantages, it requires researchers to know how to operationalize, collect, process, and analyze this type of data, which is not yet an extended expertise among survey practitioners. This paper aims to guide researchers inexperienced in image analysis by presenting the main steps involved in the proce…
The utility of digital trace data to understand how people search for jobs online
This study explores the utility of metered data, a specific form of digital trace data, for analyzing online job-seeking behaviors in Spain. Using nine months of data from 600 participants, it evaluates which job search-related concepts can be measured and the impact of two factors on the resulting indicators: the devices used to gather the data and the data collection period. Findings reveal that metered data can effectively operationalize conce…
Tracing ChatGPT Use in Spain: Differences Among Population Groups in Adoption and Engagement
Artificial intelligence (AI) tools are transforming how people work, learn and create, reshaping everyday digital interactions. Among them, ChatGPT stands out as a particularly disruptive innovation, reaching 100 million users within two months of its launch and becoming the fastest‐growing digital application in history. Understanding how ChatGPT is being adopted—and whether adoption differs across population groups—is essential for anticipating…
Climate, geography and socioeconomic vulnerability and emergency care accessibility in Nepal, 2022: A high-resolution geospatial analysis of inequalities
BACKGROUND: Strengthening emergency care systems could reduce death and disability in low- and middle-income countries (LMICs), yet many struggle to provide timely, high-quality care. LMICs also face growing risks from climate-related shocks and mass casualty events. This study identifies unmet emergency care needs in Nepal-one of the world's most climate-vulnerable countries-using high-resolution geospatial data to estimate socioeconomic and cli…
Computer Science (6 works) · Data science (4 works) · Geography (4 works) · Survey Methodology and Nonresponse (4 works) · Biology (3 works) · Botany (3 works) · Data collection (3 works) · Ecology (3 works) · Internet privacy (3 works) · Plant ecology (3 works)