Age
Item
subjects, 0 to 80 years of age during the study period.
boolean
C0001779 (UMLS CUI [1])
Study Subject Acceptable Research
Item
subjects acceptable for research as per cprd definition:
boolean
C0681850 (UMLS CUI [1,1])
C1879533 (UMLS CUI [1,2])
C0035168 (UMLS CUI [1,3])
Flag Acceptable Research
Item
acceptable flag for research.
boolean
C1708067 (UMLS CUI [1,1])
C1879533 (UMLS CUI [1,2])
C0035168 (UMLS CUI [1,3])
Observation Timespan
Item
subjects with at least 12 months of observation time at the time of inclusion in the study:
boolean
C0700325 (UMLS CUI [1,1])
C0872291 (UMLS CUI [1,2])
Other Coding
Item
subjects have to be registered in the cprd database for at least 12 months at the date of inclusion in the study.
boolean
C3846158 (UMLS CUI [1])
Patient registered General Practitioner
Item
subjects have to be registered in a general practitioner practice classified as
boolean
C0585825 (UMLS CUI [1,1])
C0017319 (UMLS CUI [1,2])
Standard
Item
'up to standard' for at least 12 months at the date of inclusion in the study.
boolean
C1442989 (UMLS CUI [1])
Infant, Newborn
Item
particular case of new born children.
boolean
C0021289 (UMLS CUI [1])
Age | Study Subject Participation Status Included | Independent of Observation Timespan
Item
to ensure inclusion of subjects less than 1 year of age, they will be included regardless their observation time in cprd.
boolean
C0001779 (UMLS CUI [1])
C2348568 (UMLS CUI [2,1])
C0332257 (UMLS CUI [2,2])
C0332291 (UMLS CUI [3,1])
C0700325 (UMLS CUI [3,2])
C0872291 (UMLS CUI [3,3])
Enrollment Date in time
Item
inclusion date
boolean
C1516879 (UMLS CUI [1,1])
C0011008 (UMLS CUI [1,2])
Inclusion criteria Assessment Calendar year
Item
inclusion criteria will be assessed for each calendar year between the years 2000 and 2012.
boolean
C1512693 (UMLS CUI [1,1])
C1516048 (UMLS CUI [1,2])
C0456586 (UMLS CUI [1,3])
Other Coding
Item
• for the analyses requiring the inclusion of hes data, hes records linked with more than one cprd patient will be excluded from the analyses.
boolean
C3846158 (UMLS CUI [1])