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. Author manuscript; available in PMC: 2021 May 26.
Published in final edited form as: Ophthalmic Epidemiol. 2020 Aug 2;28(1):3–20. doi: 10.1080/09286586.2020.1786590

Table 1.

Layout of longitudinal correlated eye data for statistical analysis.

ID EYE
(L,R)
TIME GROUP
(0,1)
OUTCOME Baseline Covariates
(X1, X2, … …, Xk)
1 L 0 0 y1L1
1 R 0 1 y1R1
1 L 1 0 y1L2
1 R 1 1 y1R2
1 L 2 0 y1L3
1 R 2 1 y1R3
2 L 0 1 Y2L1
2 R 0 0 Y2R1
2 L 1 1 Y2L2
2 R 1 0 Y2R2
2 L 2 1 Y2L3
2 R 2 0 Y2R3