scholarly journals Is Opium a Real Risk Factor for Esophageal Cancer or Just a Methodological Artifact? Hospital and Neighborhood Controls in Case-Control Studies

PLoS ONE ◽  
2012 ◽  
Vol 7 (3) ◽  
pp. e32711 ◽  
Author(s):  
Ramin Shakeri ◽  
Farin Kamangar ◽  
Dariush Nasrollahzadeh ◽  
Mehdi Nouraie ◽  
Hooman Khademi ◽  
...  
2015 ◽  
pp. 649 ◽  
Author(s):  
Tingting Zhao ◽  
Chun Wang ◽  
Lili Shen ◽  
Dongying Gu ◽  
Zhi Xu ◽  
...  

2021 ◽  
pp. 025371762110336
Author(s):  
S.M. Yasir Arafat ◽  
Vikas Menon ◽  
Natarajan Varadharajan ◽  
Sujita Kumar Kar

Background: Psychiatric disorders have been identified as an important risk factor for suicide. However, different psychological autopsy studies have revealed different prevalences at different times and places. Objective: We aimed to see the distribution of psychological autopsy studies and the prevalence of mental disorders among suicides and identify major risk factors in Southeast Asian countries. Method: We scrutinized psychological autopsy studies published in the World Health Organization (WHO) South-East Asia (SEA) region countries. We also searched the available bibliographies to identify the studies in the region so that all the possible articles could be included. Results: Out of the 11 countries, 14 psychological autopsy studies were identified in five SEA countries (Bangladesh [1], India [9], Indonesia [1], Nepal [1], and Sri Lanka [2]). Seven studies (50%) used a case-control study design, and eight (57.1%) were carried out in urban settings. The prevalence of psychiatric disorders in case-control studies was from 37% to 88%. Stressful life event was identified as a major risk factor in all the case-control studies. Conclusion: Psychological autopsy studies have not been conducted in 6 out of 11 countries of the SEA region. The presence of pre-existing psychiatric morbidity and stressful life events were the two most common risk factors noted across settings, even though there is wide heterogeneity in samples, study design, instruments, and study settings.


Nutrition ◽  
2019 ◽  
Vol 57 ◽  
pp. 5-11 ◽  
Author(s):  
Junyu Zhao ◽  
Haipeng Wang ◽  
Zhongwen Zhang ◽  
Xiaojun Zhou ◽  
Jinming Yao ◽  
...  

1989 ◽  
Vol 19 (3) ◽  
pp. 737-742 ◽  
Author(s):  
Sharon Schwartz ◽  
Bruce G. Link

SynopsisAn appropriate choice of controls in case/control studies of specific psychiatric disorders is crucial for valid risk-factor assessment. One suggested approach to control-group selection, the use of a well control group, is the focus of this paper. While using well controls has intuitive appeal, this paper shows that such a procedure can lead to ambiguous and biased results.


2014 ◽  
Vol 146 (5) ◽  
pp. S-1048-S-1049
Author(s):  
Rajan Kanth ◽  
Naga Swetha Samji ◽  
Ramon E. Rivera ◽  
Mainor R. Antillon ◽  
Praveen K. Roy

2007 ◽  
Vol 13 (5) ◽  
pp. 610-615 ◽  
Author(s):  
C.H. Hawkes

Several case control studies have probed a link between cigarette smoking and subsequent multiple sclerosis (MS). Data collection and statistical methods have varied, and frequently, case numbers have been small. Publications relating to MS and smoking are reviewed and combined where comparable methods have been used. Metanalysis of six informative studies show significantly elevated odds or rate ratios, ranging from 1.22 to 1.51, depending on the method of analysis, confirming that the risk of MS is increased for those who smoke prior to disease onset, as measured by commencement of symptoms. A variety of direct causative mechanisms are discussed, but an indirect association through health adverse conduct is favoured. Multiple Sclerosis 2007; 13: 610-615. http://msj.sagepub.com


Odontology ◽  
2011 ◽  
Vol 100 (2) ◽  
pp. 232-240 ◽  
Author(s):  
Stefano Corbella ◽  
Silvio Taschieri ◽  
Luca Francetti ◽  
Francesca De Siena ◽  
Massimo Del Fabbro

Sign in / Sign up

Export Citation Format

Share Document