Postcode (All variables related to Postcode) 19
Name
Label
Description
Unit
DataType
Home postcode DERIVED
Home postcode as derived by PA team from home address data provided by participant using google.
Text
PartPostcodeEstimate
Created by PA team to facilitate data cleaning. Data can be provided if needed. Indication whether or not a partial postcode was used to calculate home-work distance. Yes if postcode was partial and left blank if not or not applicable. Where a part-postcode was used this postcode was entered into google and the mid-point of the region was used to claculate distance.
Text
HomePC_Final
New in R7. Cleaned home postcode variable. Data either as entered on private network OR as cleaned postcode data (postcode format corrected) OR as derived from data provided OR as home postcode entered on form (in that order of priority).
Text
Home_Coord_Lat
New in R7. Home postcode as converted into latitude coordinate (with added noise) using Free Map Tools.
Real
Home_Coord_Long
New in R7. Home postcode as converted into longitude coordinate (with added noise) using Free Map Tools.
Real
HWCentre_Coord_Lat
New in R7. Centre point between home and work postcode was calculated. Noise was added to de-identify the data. The coordinates of this centre point were then split into two variables - Lat and Long
Real
HWCentre_Coord_Long
New in R7. Centre point between home and work postcode was calculated. Noise was added to de-identify the data. The coordinates of this centre point were then split into two variables - Lat and Long
Real
Hwcentre_Error
New in R7. Home-work PC centre error code generated during processing of postcode data.
Categorical
HWCentre_Radius_KM
New in R7.The distance in km between home and centre point of home-work PCs if both PCs are available but not the same. This data is different between data releases as random noise is added at time of calculation.
Real
WorkPC_CLerrorReason
New in R7. Of those with error code 99 204 PCs are estimated. They are marked as 1 in the PCder_WorkPC_Estimated variable.
Categorical
WorkPC_Clerror
New in R7. Error code assigned during cleaning of work postcode toi indicate why postcode is not complete.
Categorical
WorkPC_Est
New in R7. For all subjects with error code 99 in PCder_WorkPC_CleanErrorReason this variable indicates whether the work postcode has been estimated by the Physical activity team during data cleaning. If so the length of the road was used and the postcode was taken from the middle of the two end points.
Categorical
WorkPC_Final
New in R7. Cleaned work postcode variable. Data either as entered in study database OR as cleaned postcode data (postcode format corrected) OR as derived from data provided OR as work postcode entered on form (in that order of priority).
Text
Work_Coord_Lat
New in R7. Work postcode as converted into latitude coordinate (with added noise) using Free Map Tools.
Real
Work_Coord_Long
New in R7. Work postcode as converted into longitude coordinate (with added noise) using Free Map Tools.
Real
Work postcode CLEANED
What is the postcode for your main place of work during the last 4 weeks? Data derived by PA team from other data entered. Data cleaned.
Text
Work postcode DERIVED
What is the postcode for your main place of work during the last 4 weeks? Data derived by PA team from work address data provided by participant using google.
Text