Determinants of survey and biomarker participation #AAPOR #MRX  


prezzie #1: consent to biomarker data collection

  •  blood pressure, grip strength, balance, blood spot collection, saliva collection, 
  • agreeement ranged from 70% to 92% 
  • used the Big 5 personality test, agreeableness, openness, conscientiousness, self control
  • used R for the analysis [i’m telling you, R is the future, forget SAS and SPSS]
  • for physical measurements, people who are more open are less likely to consent, agreeable is positively related
  • for saliva, we also see that higher hostility are less likely to consent, and higher self-control is less likely
  •  for blood spot collection, more hostile and more self control are less likely to consent
  • openness was a surprise

prezzie #2: nonresponse to physical assessments

  • strength, balance, mobility, physical activity – not influenced by reporting bias
  • half of the sample did a face to face physical assessment, perhaps in a nursing home, n=15000
  • nonconsent highest for walking speed test, lowests for breathing and grip strength test, balance test was in the middle
  • oldest old are less likely to complete, women less likely to complete the grip walking and balance test
  • less educated are less likely to complete the tests
  • much more missing data for balance test and breathing test – can impute based on reasons for noncompletion – eg no space to do the test, not safe to do it, don’t understand instructions, unwilling, health issues

prezzie #3: data quality trends in the general social survey

  • social security number was most interesting
  • theres been a lot of leaked and stolen government data which can make people nervous about completing govt surveys
  • low refusal rate for phone number and birth date but half refused social security
  • varied widely by geo region
  • trend is not drastically different despite data issues

prezzie #4: does sexual orientation, race, language correlate with nonresponse

  • correlates of nonresponse – we know younger, male, hispanic, single, renters. but what about sexual orientation or language use
  • few differences by sexuality
  • nonhispanic black had highest non response, hispanic also high when the survey was in spanish
  • self reported good health had higher nonresponse, could mean our surveys tell us people are less healthy than they really are
  • spanish speakers had higher nonresponse
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