Bug: `derive_var_afeye`: undesired results are created when `xxLAT = "BILATERAL"` or potentially dirty data entry
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What happened?
Comment from tester: Affected Eye is derived independently from xxLOC values (when xxLOC is missing or not equal to 'EYE'). When STUDYEYE = "BILATERAL" then AFEYE is always set to "STUDY EYE" even when xxLOC and xxLAT are missing.
Session Information
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Reproducible Example
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Function now follows derivation (e.g. for AE):
"Set to ""BOTH EYES"" when Study Eye Selection (ADSL.STUDYEYE) is not missing, and Study Eye Laterality (AE.AELAT) is equal to ""BILATERAL""
Else set to ""STUDY EYE"" when Study Eye Selection (ADSL.STUDYEYE) is either ""RIGHT"" or ""LEFT"", and matches Study Eye Laterality (AE.AELAT) for the observation record.
Else set to ""STUDY EYE"" when Study Eye Selection (ADSL.STUDYEYE) is ""BILATERAL"", and Study Eye Laterality (AE.AELAT) is not missing for the observation record
Else set to ""FELLOW EYE"" when Study Eye Selection (ADSL.STUDYEYE) is either ""RIGHT"" or ""LEFT"", and (AE.AELAT) is either ""RIGHT"" or ""LEFT"" but are not equal to each other for the observation record.
Else set to null"