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/^((0?[1-9])|([1-8][0-9])|(9[0-8]))[0-9]{3}$/
/^((29([-\/])02\3(\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00)))|((((0[1-9]|1\d|2[0-8])([-\/])(0[1-9]|1[012]))|((29|30)([-\/])(0[13-9]|1[012]))|(31([-\/])(0[13578]|1[02])))(\11|\15|\18)\d{4}))$/
/^((02([-\/])29\3(\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00)))|((((0[1-9]|1[012])([-\/])(0[1-9]|1\d|2[0-8]))|((0[13-9]|1[012])([-\/])(29|30))|((0[13578]|1[02])([-\/])31))(\11|\15|\19)\d{4}))$/
/^(((\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00))([-\/])02(\6)29)|(\d{4}([-\/])((0[1-9]|1[012])(\9)(0[1-9]|1\d|2[0-8])|((0[13-9]|1[012])(\9)(29|30))|((0[13578]|1[02])(\9)31))))$/
/^((29([-\/])02\3(\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00)))|((((0[1-9]|1\d|2[0-8])([-\/])(0[1-9]|1[012]))|((29|30)([-\/])(0[13-9]|1[012]))|(31([-\/])(0[13578]|1[02])))(\11|\15|\18)\d{4})) (\d|[0-1]\d|[2][0-3]):[0-5]\d$/
/^((02([-\/])29\3(\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00)))|((((0[1-9]|1[012])([-\/])(0[1-9]|1\d|2[0-8]))|((0[13-9]|1[012])([-\/])(29|30))|((0[13578]|1[02])([-\/])31))(\11|\15|\19)\d{4})) (\d|[0-1]\d|[2][0-3]):[0-5]\d$/
/^(((\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00))([-\/])02(\6)29)|(\d{4}([-\/])((0[1-9]|1[012])(\9)(0[1-9]|1\d|2[0-8])|((0[13-9]|1[012])(\9)(29|30))|((0[13578]|1[02])(\9)31)))) (\d|[0-1]\d|[2][0-3]):[0-5]\d$/
/^((29([-\/])02\3(\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00)))|((((0[1-9]|1\d|2[0-8])([-\/])(0[1-9]|1[012]))|((29|30)([-\/])(0[13-9]|1[012]))|(31([-\/])(0[13578]|1[02])))(\11|\15|\18)\d{4})) (\d|[0-1]\d|[2][0-3])(:[0-5]\d){2}$/
/^((02([-\/])29\3(\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00)))|((((0[1-9]|1[012])([-\/])(0[1-9]|1\d|2[0-8]))|((0[13-9]|1[012])([-\/])(29|30))|((0[13578]|1[02])([-\/])31))(\11|\15|\19)\d{4})) (\d|[0-1]\d|[2][0-3])(:[0-5]\d){2}$/
/^(((\d{2}([13579][26]|[2468][048]|04|08)|(1600|2[048]00))([-\/])02(\6)29)|(\d{4}([-\/])((0[1-9]|1[012])(\9)(0[1-9]|1\d|2[0-8])|((0[13-9]|1[012])(\9)(29|30))|((0[13578]|1[02])(\9)31)))) (\d|[0-1]\d|[2][0-3])(:[0-5]\d){2}$/
/^(?!\.)((?!.*\.{2})[a-zA-Z0-9\u0080-\u02AF\u0300-\u07FF\u0900-\u18AF\u1900-\u1A1F\u1B00-\u1B7F\u1D00-\u1FFF\u20D0-\u214F\u2C00-\u2DDF\u2F00-\u2FDF\u2FF0-\u2FFF\u3040-\u319F\u31C0-\uA4CF\uA700-\uA71F\uA800-\uA82F\uA840-\uA87F\uAC00-\uD7AF\uF900-\uFAFF!#$%&'*+\-/=?^_`{|}~\d]+)(\.[a-zA-Z0-9\u0080-\u02AF\u0300-\u07FF\u0900-\u18AF\u1900-\u1A1F\u1B00-\u1B7F\u1D00-\u1FFF\u20D0-\u214F\u2C00-\u2DDF\u2F00-\u2FDF\u2FF0-\u2FFF\u3040-\u319F\u31C0-\uA4CF\uA700-\uA71F\uA800-\uA82F\uA840-\uA87F\uAC00-\uD7AF\uF900-\uFAFF!#$%&'*+\-/=?^_`{|}~\d]+)*@(?!\.)([a-zA-Z0-9\u0080-\u02AF\u0300-\u07FF\u0900-\u18AF\u1900-\u1A1F\u1B00-\u1B7F\u1D00-\u1FFF\u20D0-\u214F\u2C00-\u2DDF\u2F00-\u2FDF\u2FF0-\u2FFF\u3040-\u319F\u31C0-\uA4CF\uA700-\uA71F\uA800-\uA82F\uA840-\uA87F\uAC00-\uD7AF\uF900-\uFAFF\-\.\d]+)((\.([a-zA-Z\u0080-\u02AF\u0300-\u07FF\u0900-\u18AF\u1900-\u1A1F\u1B00-\u1B7F\u1D00-\u1FFF\u20D0-\u214F\u2C00-\u2DDF\u2F00-\u2FDF\u2FF0-\u2FFF\u3040-\u319F\u31C0-\uA4CF\uA700-\uA71F\uA800-\uA82F\uA840-\uA87F\uAC00-\uD7AF\uF900-\uFAFF]){2,63})+)$/i
/^[-+]?\b\d+\b$/
/^[a-z]+$/i
/^\d{10}$/
/^[a-z0-9-_]+$/i
/^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$/
/^-?\d+,\d$/
/^-?\d+\.\d$/
/^-?\d+,\d{2}$/
/^-?\d+\.\d{2}$/
/^-?\d+,\d{3}$/
/^-?\d+\.\d{3}$/
/^-?\d+,\d{4}$/
/^-?\d+\.\d{4}$/
/^[-+]?[0-9]*,?[0-9]+([eE][-+]?[0-9]+)?$/
/^(\(0[2-8]\)|0[2-8])\s*\d{4}\s*\d{4}$/
/^(?:\(?([2-9]0[1-9]|[2-9]1[02-9]|[2-9][2-9][0-9]|800|811)\)?)\s*(?:[.-]\s*)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+))?$/
/^\d{4}$/
/^[ABCEGHJKLMNPRSTVXY]{1}\d{1}[A-Z]{1}\s*\d{1}[A-Z]{1}\d{1}$/i
/^(0[1-9]|[1-9]\d)\d{3}$/
/^\d{3}-\d\d-\d{4}$/
/^(\d|[01]\d|(2[0-3]))(:[0-5]\d){2}$/
/^([0-9]|[0-1][0-9]|[2][0-3]):([0-5][0-9])$/
/^[0-5]\d:[0-5]\d$/
/^[0-9]{4,9}$/
/^\d{5}(-\d{4})?$/

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Repeating InstrumentsPID 12
Data Comparison Tool
NOTICE: The Data Comparison Tool does not *fully* support the Repeating Instruments and Events feature, which appears to be enabled in this project. Data can be compared (and even merged if using Double Data Entry), but it will only allow comparison and merging of Instance #1 of a repeating instrument or repeating event. Thus all other repeating data will be ignored on this page. Also, all non-repeating data can still be compared and merged.

This page may be used for comparing two records currently in the project. Select a record from each of the lists below and hit the 'Compare' button. A comparison table will then be displayed showing the differences between the two records.

Study ID
  


REDCap 12.2.0 - © 2025 Vanderbilt University