Unique cross-wave individual serial number
Analytical Wave 8 household serial number
Person number in household
Sampling status
Sampling status by cohort
Nurse visit outcome code
Grip strength outcome
Blood pressure outcome
Blood sample outcome (excluding PAXgene)
Nurse interview month
Nurse interview year
Whether eligible for nurse visit
Whether agreed to nurse visit in interviewer stage
Drug: whether taking or using any medicines, pills, syrups, ointments, puffers o
Drug: whether taking statins (drugs to lower cholesterol) bought over the counte
Drug: whether taken/used statins in the last 7 days
Blood pressure: consent to BP measurement
Blood pressure: whether done anything that will affect BP in last 30 minutes: ea
Blood pressure: whether done anything that will affect BP in last 30 minutes: sm
Blood pressure: whether done anything that will affect BP in last 30 minutes: dr
Blood pressure: whether done anything that will affect BP in last 30 minutes: do
Blood pressure: whether done anything that will affect BP in last 30 minutes: no
Blood pressure: cuff size used
Blood pressure: air temperature (centigrade)
Blood pressure: first systolic reading (mmhg)
Blood pressure: first diastolic reading (mmhg)
Blood pressure: first pulse reading (bpm)
Blood pressure: first mean arterial pressure (map) reading (mmhg)
Blood pressure: first set of BP readings are complete
Blood pressure: second systolic reading (mmhg)
Blood pressure: second diastolic reading (mmhg)
Blood pressure: second pulse reading (bpm)
Blood pressure: second mean arterial pressure (map) reading (mmhg)
Blood pressure: second set of BP readings are complete
Blood pressure: third systolic reading (mmhg)
Blood pressure: third diastolic reading (mmhg)
Blood pressure: third pulse reading (bpm)
Blood pressure: third mean arterial pressure (map) reading (mmhg)
Blood pressure: third set of BP readings are complete
Blood pressure: reason for not recording full BP readings
Blood pressure: number of BP measurements obtained
Blood pressure: reason why full set of BP measurements was not collected: proble
Blood pressure: reason why full set of BP measurements was not collected: respon
Blood pressure: reason why full set of BP measurements was not collected: error
Blood pressure: reason why full set of BP measurements was not collected: other
Blood pressure: problems taking BP readings: no problems taking blood pressure
Blood pressure: problems taking BP readings: reading taken on left arm because r
Blood pressure: problems taking BP readings: respondent was upset/anxious/nervou
Blood pressure: problems taking BP readings: problems with cuff fitting/painful
Blood pressure: problems taking BP readings: problems with equipment (not error
Blood pressure: problems taking BP readings: error reading
Blood pressure: problems taking BP readings: other problems
Grip: respondent is willing to have grip strength measured
Grip: dominant hand to be used for grip strength measurements
Grip: respondent able to use both, one or neither hands
Grip: respondent unable or unwilling
Grip: first measurement dominant hand (kg)
Grip: first measurement non-dominant hand (kg)
Grip: second measurement dominant hand (kg)
Grip: second measurement non-dominant hand (kg)
Grip: third measurement dominant hand (kg)
Grip: third measurement non-dominant hand (kg)
Grip: position during grip strength measurement
Grip: number of grip strength measurements obtained
Grip: reason why none or only some grip strength measurements obtained: responde
Grip: reason why none or only some grip strength measurements obtained: equipmen
Grip: reason why none or only some grip strength measurements obtained: other
Blood sample: whether has clotting disorder
Blood sample: whether ever had a fit
Blood sample: consent to take blood sample
Blood sample: whether respondent was asked to fast
Blood sample: whether eligible for a fasting blood sample
Blood sample: what respondent had to eat
Blood sample: other thing that respondent had to eat (if not followed fasting in
Reason why blood sample refused: previous difficulties with venepuncture
Reason why blood sample refused: dislike/fear of needles
Reason why blood sample refused: respondent recently had blood test/health check
Reason why blood sample refused: refused because of current illness
Reason why blood sample refused: worried about HIV or AIDS
Reason why blood sample refused: other
Whether consented to give blood sample for PAXGene extraction
Blood sample: any blood samples taken (incl PAXGene)
Problems taking blood sample: no problem
Problems taking blood sample: incomplete sample
Problems taking blood sample: collapsing/poor veins
Problems taking blood sample: second attempt necessary
Problems taking blood sample: some blood obtained, but respondent felt faint/fai
Problems taking blood sample: unable to use tourniquet
Problems taking blood sample: other
Reasons for not obtaining blood sample: no suitable or no palpable vein/collapse
Reasons for not obtaining blood sample: respondent was too anxious/nervous
Reasons for not obtaining blood sample: respondent felt faint/fainted
Reasons for not obtaining blood sample: other
Blood analysis: total cholesterol level (mmol/l)
Blood analysis: HDL level (mmol/l)
Blood analysis: triglyceride level (mmol/l)
Blood analysis: LDL level (mmol/l)
Blood analysis: ferritin level (ng/ml)
Blood analysis: CRP level (mg/l)
Blood analysis: Vitamin D level (unit)
Blood analysis: insulin-like growth factor (IGF-1) level (nmol/l)
Blood analysis: glycated haemoglobin level (%)
Blood analysis: glucose level (mmol/l) - fasting samples only
Blood analysis: fibrinogen level (g/l)
Blood analysis: haemoglobin level (g/dl)
Blood analysis: mean corpuscular haemoglobin level (pg/cell)
Blood analysis: white blood cell WBC, leukocyte) count (billions/l)
Number series: whether correct response 8 given
Number series: whether correct response 3 given
Number series: check to see whether respondent understands task
Number series: ready to start the fluid intelligence test
Number series: whether correct response 10 given
Number series: whether correct response 41 given
Number series: whether correct response 12 given
Number series: computed: number of correct variables in question set 1 so far
Number series: whether correct response 5 given
Number series: whether correct response 14 given
Number series: whether correct response 2 given
Number series: whether correct response 9 given
Number series: whether correct response 4 given
Number series: whether correct response 15 given
Number series: whether correct response 6 given
Number series: whether correct response 2 or 3 given
Number series: whether correct response 17 given
Number series: whether correct response 7 given
Number series: whether correct response 72 & 76 or 78 & 82 given
Number series: whether correct response 16 given
Number series: whether correct response 13 given
Number series: whether correct response 1 given
Number series: whether correct response 27 given
Number series: whether correct response 27, 35, 25 or 26 given
Number series: whether correct response 9 & 9 given
Number series: whether correct response 20 given
Number series stopped/not conducted: insufficient understanding of instructions
Number series stopped/not conducted: physical disability made completing the tes
Number series stopped/not conducted: attention problems, excessive distraction
Number series stopped/not conducted: insufficient time
Number series stopped/not conducted: extreme anxiety or discomfort
Number series stopped/not conducted: other person present
Number series stopped/not conducted: respondent doesn't want to do test
Number series stopped/not conducted: language problems
Number series stopped/not conducted: other reasons
(D) Definitive age variable collapsed at 90+: priority diag, dhage
(D) Definitive sex variable: priority disex, dhsex
(D) Whether BP readings are valid
(D) Valid mean systolic BP
(D) Valid mean diastolic BP
(D) Valid pulse pressure
(D) Valid mean arterial pressure
Wave 8 nurse weight (N.B. nurse sample drawn purposively - please treat this wei
Wave 8 blood weight (N.B. nurse sample drawn purposively - please treat this wei