Evidence Table 10

Quality assessment of observational studies

Author, year(1) Non-biased selection?(2) Low overall loss to follow- up?(3) Adverse events pre- specified and defined?(4) Ascertainment techniques adequately described?(5) Non-biased and adequate ascertainment methods?(6) Statistical analysis of potential confounders?(7) Adequate duration of follow-up?(8) Overall adverse event assessment quality
Goodwin,
2003(79)
YesNot clearYesYesNoYesYesFair
Ibáñez, 2005
{ID 2063}
YesYesYesYesYesYesYes (each case followed up for 4 wk or to hospital discharge; surveillance system in place for 22 y)Good
Lin (2005) {ID
2065}
YesYesYesNo (ICD-9-CM codes not specified)No(?) (ICD-CM codes used)YesYesFair
Rzany,
1999(80)
YesNot clearYesNoUnable to determineYesYesFair
Tohen,
1995(78)
YesNot clearYesYesNoNoYesPoor
Vestergaard
(2004) {ID
2066}
YesYesYes (ICD10 codes)YesYesYesYesGood

From: Evidence Tables

Cover of Drug Class Review: Antiepileptic Drugs for Indications Other Than Epilepsy
Drug Class Review: Antiepileptic Drugs for Indications Other Than Epilepsy: Final Report Update 2 [Internet].
McDonagh M, Peterson K, Lee N, et al.
Portland (OR): Oregon Health & Science University; 2008 Oct.
Copyright © 2008, Oregon Health & Science University, Portland, Oregon.

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