Table 1. Characteristics of the Cohort Studies
Study, YearLocationFollow‐Up Period, yAge (Mean), yOutcomeOutcome AssessmentAscertainment of Statins ExposureCases, nControls, nOverall Quality
Klein, 200615US563.2CataractWisconsin Cataract Grading SystemPrivate census185/83442/2147
Tan, 200716AUS>5≥50 (>60) Cataract
Cataract surgery
Wisconsin Cataract Grading SystemQuestionnaires17/72365/11526
Hippisley‐Cox, 201017UK<530 to 84 (<60)CataractMedical records Drug prescription
Computerized record
36 5412 004 6928
Waudby, 201120US>5>60 Cataract
Cataract surgery
ICD‐9
CPT code
Drug prescription
Computerized record
1959/74701645/12 5796
Lai, 201319Asia>570.4Cataract surgeryICD‐9 Drug prescription
Computerized record
1533/683016 137/43 3358
Leuschen, 201318US<530 to 85 (<60)CataractICD‐9 Drug prescription
Computerized record
2477/69722337/69727
  • CPT indicates current procedural terminology; ICD, International Classification of Diseases.