Logistic Regression in Rare Events Data

Tomz, Michael; King, Gary; Zeng, Langche

doi:10.18637/jss.v008.i02

Cited by 1,224 publications

(1,636 citation statements)

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“…This is a feasible assumption in Finland, where farmers do not have a history of moving from one place to another. 8 It is known that rare events of this kind may not be captured by a logit model, and the model may underestimate their probability (King and Zeng 2001). However, based on King and Zeng's (2001) work, rare events were not a problem in our analysis, as the proportion of future sellers among all land owners varied from 13.9% to 25.8%, and the number of observations was between 532 and 833.…”

Section: Logit Models For Sale Preferencesmentioning

confidence: 90%

“…8 It is known that rare events of this kind may not be captured by a logit model, and the model may underestimate their probability (King and Zeng 2001). However, based on King and Zeng's (2001) work, rare events were not a problem in our analysis, as the proportion of future sellers among all land owners varied from 13.9% to 25.8%, and the number of observations was between 532 and 833. 9 As a first step in selecting socioeconomic variables for the logit models for selling decisions, we used correlation analysis, cross tabulation, and chi-squared statistics.…”

Section: Logit Models For Sale Preferencesmentioning

confidence: 90%

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Farmland Owners’ Land Sale Preferences: Can They Be Affected by Taxation Programs?

Myyrä¹,

Pouta²

2010

Land Economics

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Land ownership fragmentation has resulted in the neglect of land improvement in many countries. This study aims to analyze whether this challenge could be resolved by a tax policy that encourages land sales. Using Finnish data, real estate tax and temporal relaxation on taxation of capital gains showed some potential for the restructuring of land ownership. Potential sellers who could not be revealed by traditional logit models were identified with the latent class approach. Those landowners with an intention to sell even without a policy change were sensitive to temporal relaxation in the taxation of capital gains. (JEL H21, Q15)

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Section: Logit Models For Sale Preferencesmentioning

confidence: 90%

Section: Logit Models For Sale Preferencesmentioning

confidence: 90%

Farmland Owners’ Land Sale Preferences: Can They Be Affected by Taxation Programs?

Myyrä¹,

Pouta²

2010

Land Economics

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“…Due to the low number of participants (3.5%) declaring having accessed self-tests, the characteristics of this subgroup were analysed using logistic regression for rare events 26. Model building was in two steps: first, a list of potential explanatory variables was defined and a univariate analysis was conducted on these; variables with a p value inferior to a predefined threshold (0.20) were then included in a multivariate analysis and a backward selection method based on the log-likelihood ratio test was used to select significant variables in the multivariate model (significance level α=0.05).…”

Section: Methodsmentioning

confidence: 99%

Access to and use of unauthorised online HIV self-tests by internet-using French-speaking men who have sex with men

et al. 2012

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Although readiness to admit use of unauthorised medical products may have influenced results, few MSM aware of the existence of self-tests actually declared having accessed one. Accessing the self-test was independently associated with both living one's sex-life with men in total secrecy and having had unprotected anal intercourse in the last 12 months, indicating that autonomous self-testing may reduce barriers to testing for this vulnerable population.

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“…Robust standard errors were used to guard against model misspecification [8]. Estimates were bias-adjusted for rare events [9]. All P values are 2-sided.…”

Section: Methodsmentioning

confidence: 99%

The effect of hospital teaching status on outcomes in bariatric surgery

Inaba

Koh

Sujatha-Bhaskar

et al. 2017

Surgery for Obesity and Related Diseases

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Background: Studies have shown conflicting effects of resident involvement on outcomes after laparoscopic bariatric surgery. Resident involvement may be a proxy for a teaching environment in which multiple factors affect patient outcomes. However, no study has examined outcomes of laparoscopic bariatric surgery based on hospital teaching status. Objective: To compare outcomes after laparoscopic Roux-en-Y gastric bypass (LRYGB) and laparoscopic sleeve gastrectomy (LSG) between teaching hospitals (THs) and nonteaching hospitals (NTHs). Setting: Retrospective review of a national database in the United States. Methods: The Nationwide Inpatient Sample database (2011–2013) was reviewed for obese patients who underwent LRYGB or LSG. Patient demographic characteristics and outcomes were analyzed according to hospital teaching status. Primary outcome measures included risk-adjusted inpatient mortality and serious morbidity. Results: We analyzed 32,449 LRYGBs and 26,075 LSGs. There were 35,160 (60.1%) cases performed at THs and 23,364 (39.9%) cases performed at NTHs. At THs, the distribution of LRYGB versus LSG cases was 20,461 (58.2%) versus 14,699 (41.8%), respectively; at NTHs, the distribution was 11,988 (51.3%) versus 11,376 (48.7%), respectively. For LRYGB, there were no significant differences between THs versus NTHs in mortality (AOR 1.14; P = 0.99), but there was an increase in odds of serious morbidity at THs (AOR 1.36; P < 0.001). For LSG, there were no significant differences between THs versus NTHs for mortality (AOR 1.15; P = 0.99) or serious morbidity (AOR 1.03; P = 0.99). Conclusions: There is an association between THs and increased serious morbidity for LRYGB, but hospital teaching status has no effect on morbidity or mortality after LSG. Further research is warranted to elucidate the reasons for these associations.

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Logistic Regression in Rare Events Data

Cited by 1,224 publications

References 0 publications

Farmland Owners’ Land Sale Preferences: Can They Be Affected by Taxation Programs?

Farmland Owners’ Land Sale Preferences: Can They Be Affected by Taxation Programs?

Access to and use of unauthorised online HIV self-tests by internet-using French-speaking men who have sex with men

The effect of hospital teaching status on outcomes in bariatric surgery

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