TY - JOUR
T1 - Two eyes or one? The data analyst's dilemma.
AU - Katz, J.
PY - 1988/8
Y1 - 1988/8
N2 - Ophthalmic data usually include measures of disease status, visual function, or ocular physiology for both eyes of each patient. Many ocular characteristics, while differing among individuals, are quite similar for the eyes of the same individual. In studies, eyes, not patients, are often treated as the primary unit of analysis. If an ocular measure is similar for both eyes of an individual, many standard statistical techniques may give misleading results if both eyes of each person are included in analyses. This article discusses the correlation between pairs of eyes for a variety of ocular measures and its impact on common statistical procedures.
AB - Ophthalmic data usually include measures of disease status, visual function, or ocular physiology for both eyes of each patient. Many ocular characteristics, while differing among individuals, are quite similar for the eyes of the same individual. In studies, eyes, not patients, are often treated as the primary unit of analysis. If an ocular measure is similar for both eyes of an individual, many standard statistical techniques may give misleading results if both eyes of each person are included in analyses. This article discusses the correlation between pairs of eyes for a variety of ocular measures and its impact on common statistical procedures.
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M3 - Article
C2 - 3173980
AN - SCOPUS:0024060979
SN - 2325-8160
VL - 19
SP - 585
EP - 589
JO - Ophthalmic Surgery and Lasers
JF - Ophthalmic Surgery and Lasers
IS - 8
ER -