Understanding Regression Analysis

Schroeder, Larry; Sjoquist, David L.; Stephan, Paula E.

doi:10.4135/9781412986410

Cited by 181 publications

(51 citation statements)

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“…Continuous outcome measures, including principal components, were analysed with multiple linear regression (Schroeder, Sjoquist, & Stephan, 1986;Strube, 2003).…”

Section: Regression Analysesmentioning

confidence: 99%

Hearing-Impaired Children in the United Kingdom, I: Auditory Performance, Communication Skills, Educational Achievements, Quality of Life, and Cochlear Implantation

et al. 2006

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Objectives: The objectives of this study were to identify variables which are associated with differences in outcome among hearing-impaired children, and to control those variables while assessing the impact of cochlear implantation. Study design:In a cross-sectional study, the parents and teachers of a representative sample of hearing-impaired children were invited to complete questionnaires about children's auditory performance, spoken communication skills, educational achievements, and quality of life. Multiple regression was used to measure the strength of association between these outcomes and variables related to the child (average hearing level, age at onset of hearing impairment, age, gender, number of additional disabilities), the family (parental occupational skill level, ethnicity, and parental hearing status), and cochlear implantation.Results: Questionnaires were returned by the parents of 2858 children, 468 of whom had received a cochlear implant, and by the teachers of 2241 children, 383 of whom had received an implant. Across all domains, reported outcomes were better for children with fewer disabilities in addition to impaired hearing. Across most domains, reported outcomes were better for children who were older, female, with a more favourable average hearing level, with a higher parental occupational skill level, and with an onset of hearing-impairment after 3 years. When these variables were controlled, cochlear implantation was consistently associated with advantages in auditory performance and spoken communication skills, but less consistently associated with advantages in educational achievements and quality of life.Significant associations were found most commonly for children who were younger than 5 years when implanted, and had used implants for more than 4 years. TheseHearing-impaired children in the UK, I. 2 children, whose mean (pre-operative, un-aided) average hearing level was 118 dB, performed at the same level as non-implanted children with average hearing levels in the range from 80 dB to 104 dB, depending on the outcome measure. Conclusion:When rigorous statistical control is exercised in comparing implanted and non-implanted children, paediatric cochlear implantation is associated with reported improvements both in spoken communication skills and in some aspects of educational achievements and quality of life, provided that children receive implants before 5 years of age.(342 words)

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“…Continuous outcome measures, including principal components, were analysed with multiple linear regression (Schroeder, Sjoquist, & Stephan, 1986;Strube, 2003).…”

Section: Regression Analysesmentioning

confidence: 99%

Hearing-Impaired Children in the United Kingdom, I: Auditory Performance, Communication Skills, Educational Achievements, Quality of Life, and Cochlear Implantation

et al. 2006

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“…Linear correlation and linear regression are the two most useful methods used commonly in the meteorological studies to establish the type of relationship between the various variables and extent of association between one to the other [14]. Regression analysis is the process that was seeking for the estimator and determining how well they estimate the future value.…”

Section: Methodology and Analysismentioning

confidence: 99%

Outgoing Longwave Radiation over Iraq using Atmospheric Infrared Sounder

AL-Salihi

AL-Kinani

2017

IJEE

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The present paper involves Outgoing longwave radiation (OLR) under clear-sky condition modeling employing three measured meteorological parameters (Air surface temperature, Relative humidity and Cloud fraction). Dataset retrieved from NASA Atmospheric Infrared Sounder (AIRS), from 2003 to 2015 was employed to develop two models to estimate OLR values in Iraq using the multiple linear regression (MLR) and Artificial Neural Network (ANN) approach. For the entire period, the mentioned meteorological parameters were highly correlated with estimated OLR. Comparisons among selected cities (Mosul, Baghdad, and Basrah) for the year 2016 showed close agreement between the estimated and measured OLR. Mosul at the north of the Iraq, showed the lowest root mean square error (RMSE) and correlation coefficient (R) ranged between (1.3853 and 4.4966) and (0.9929 and 0.9993), respectively for the two developed models (MLR and ANN) respectively, indicating model's efficiency and accuracy. Statistical analysis in term of β showed that surface temperature (1.823 to 2.311) tended to provide a high contribute to OLR values. These results indicate the advantage of using the AIRS data and both of correlation analysis and computing system to investigate the impact of the meteorological parameters on OLR over the study area.

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“…The quality of a regression model is generally assessed by a number of assumptions as discussed in [Schroeder et al, 1986] and [Field, 2005]. These assumptions are mostly based on the errors (also called residuals) that the model produces based on the same data set.…”

Section: Multiple Regression For Context Modelling 114mentioning

confidence: 99%

Event and map content personalisation in a mobile and context-aware-environment

Bierig

2010

SIGIR Forum

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Effective methods for information access are of the greatest importance for our modern lives -- particularly with respect to handheld devices. Personalisation is one such method which models a user's characteristics to deliver content more focused to the user's needs. The emerging area of sophisticated mobile computing devices has started to inspire new forms of personalised systems that include aspects of the person's contextual environment. This thesis seeks to understand the role of personalisation and context, to evaluate the effectiveness of context for content personalisation and to investigate the event and map content domain for mobile usage. The work presented in this thesis has three parts. The first part is a user experiment on context that investigated the contextual attributes of time, location and interest, with respect to participants' perception of their usefulness. Results show highly dynamic and interconnected effects of context on participants' usefulness ratings. In the second part , these results were applied to create a predictive model of context that was related to attribution theory and then combined with an information retrieval score to create a weighted personalisation model. In the third part of this work, the personalisation model was applied in a mobile experiment. Participants solved situational search tasks using a (i) non-personalized and a (ii) personalized mobile information system, and rating entertainment events based on usefulness. Results showed that the personalised system delivered about 20% more useful content to the mobile user than the non-personalised system, with some indication for reduced search effort in terms of time and the amount of queries per task. The work presented provides evidence for the promising potential of context to facilitate personalised information delivery to users of mobile devices. Overall, it serves as an example of an investigation into the effectiveness of context from multiple angles and provides a potential link to some of the aspects of psychology as a potential source for a deeper understanding of contextual processes in humans.

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Understanding Regression Analysis

Cited by 181 publications

References 0 publications

Hearing-Impaired Children in the United Kingdom, I: Auditory Performance, Communication Skills, Educational Achievements, Quality of Life, and Cochlear Implantation

Hearing-Impaired Children in the United Kingdom, I: Auditory Performance, Communication Skills, Educational Achievements, Quality of Life, and Cochlear Implantation

Outgoing Longwave Radiation over Iraq using Atmospheric Infrared Sounder

Event and map content personalisation in a mobile and context-aware-environment

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