Evidence Table 28Quality assessment of observational studies in major depressive disorder

Author Year
Country
Non-biased selection?High overall loss to follow-up or differential loss to follow up?Outcomes pre-specified and defined?Ascertainment techniques adequately described?Non-biased and adequate ascertainment methods?Statistical analysis of potential confounders?Adequate duration of follow-up?Overall quality rating
Barbee 2004YesNoNoNoUnclearNoNo for olanzapine, quetiapine, and ziprasidone.
Yes for risperidone.
Poor
Seo 2009Unclear whether 272 enrolled represented all eligible patients admitted between 2002 and 2006YesYesYesYesYes for duration of atypical antipsychotic treatment and illness durationNoFair

From: Evidence Tables

Cover of Drug Class Review: Atypical Antipsychotic Drugs
Drug Class Review: Atypical Antipsychotic Drugs: Final Update 3 Report [Internet].
McDonagh M, Peterson K, Carson S, et al.
Portland (OR): Oregon Health & Science University; 2010 Jul.
Copyright © 2010 by Oregon Health & Science University, Portland, Oregon 97239. All rights reserved.

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