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Articles by Michael Davidson
Total Records ( 4 ) for Michael Davidson
  Scott L. Charland , Mark J. Cziraky , Ralph Quimbo , Richard H. Karas , William Insull , Michael Davidson and Eric J. Stanek
 

Background

Cardiovascular (CV) event risk is significantly lower in patients with combined low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and triglycerides (TG) at desired levels versus those without lower levels. However, this has not been investigated relative to specific patterns of baseline lipid abnormalities.

Objective

To evaluate the association between desired combined lipid value achievement and risk of CV events in patients with different baseline lipid profiles.

Methods

A retrospective managed care database analysis among treatment-naive adults with elevated CV event risk, ≥12 months follow-up, and full lipid panel from January 1, 2001 to December 31, 2001 plus ≥1 panel before a CV event or study end. Patients were stratified into three baseline cohorts: isolated high LDL-C (Cohort 1), high LDL-C + low HDL-C or high TG (Cohort 2), and high LDL-C, low HDL-C, and high TG (Cohort 3). CV event risk stratified by combined desired lipid value achievement was assessed in each cohort.

Results

Achievement of combined desired lipid values/median days to achievement was 29% in 385 days (Cohort 1), 11% in 413 days (Cohort 2), and 7% in 505 days (Cohort 3). Achievement of combined desired lipid values was associated with an adjusted 25%-46% lower CV event risk in Cohort 1 (hazards ratio, 0.75; 95% confidence interval 0.65-0.87), Cohort 2 (hazards ratio, 0.54; 95% confidence interval 0.43-0.67), and Cohort 3 (hazard ratio, 0.54; 95% confidence interval 0.37-0.78).

Conclusion

Patients with combined desired lipid values had lower risk of CV events versus those without such values. The risk reduction was greatest among patients with multiple lipid abnormalities, suggesting a potential benefit of interventions targeting low HDL-C and/or high TG in addition to high LDL-C.

  W. Virgil Brown , Harold Bays , Michael Davidson and Anne Goldberg
  Not available
  Maciej Banach , Michael Davidson and Peter P. Toth
  Not available
  Asaf Caspi , Tali Vishne , Abraham Reichenberg , Mark Weiser , Ayelet Dishon , Gadi Lubin , Motti Shmushkevitz , Yossi Mandel , Shlomo Noy and Michael Davidson
 

Background:Refractive errors (myopia, hyperopia and amblyopia), like schizophrenia, have a strong genetic cause, and dopamine has been proposed as a potential mediator in their pathophysiology. The present study explored the association between refractive errors in adolescence and schizophrenia, and the potential familiality of this association.

Methods:The Israeli Draft Board carries a mandatory standardized visual accuracy assessment. 678,674 males consecutively assessed by the Draft Board and found to be psychiatrically healthy at age 17 were followed for psychiatric hospitalization with schizophrenia using the Israeli National Psychiatric Hospitalization Case Registry. Sib-ships were also identified within the cohort.

Results:There was a negative association between refractive errors and later hospitalization for schizophrenia. Future male schizophrenia patients were two times less likely to have refractive errors compared with never-hospitalized individuals, controlling for intelligence, years of education and socioeconomic status [adjusted Hazard Ratio = .55; 95% confidence interval .35–.85]. The non-schizophrenic male siblings of schizophrenia patients also had lower prevalence of refractive errors compared to never-hospitalized individuals.

Conclusions:Presence of refractive errors in adolescence is related to lower risk for schizophrenia. The familiality of this association suggests that refractive errors may be associated with the genetic liability to schizophrenia.

 
 
 
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