questionnaires:2020

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questionnaires:2020 [16/12/2021 @ 15:55] – [Questionnaires] d.aylandquestionnaires:2020 [05/01/2022 @ 17:10] (current) – [Responding Population] d.ayland
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 In March 2021, UK based study members who had taken part in any of the three waves of the COVID-19 survey were asked to provide a finger-prick blood sample to be analysed for COVID-19 antibodies. Those who agreed were sent a blood sample collection kit and asked to post back the sample to a laboratory for analysis.  \\ In March 2021, UK based study members who had taken part in any of the three waves of the COVID-19 survey were asked to provide a finger-prick blood sample to be analysed for COVID-19 antibodies. Those who agreed were sent a blood sample collection kit and asked to post back the sample to a laboratory for analysis.  \\
  
-The NSHD sample and response rates are: 
  
-^Wave^Cohort Issued Sample^Email bounced^Failed^Opted Out^Completed Wave 1^Completed Wave 1 and/or Wave 2^Response^ +Responding Population  
-|Wave 1 Online|1842|79 (4.3%)|2 (0.1%)|45 (2.4%)|||**1252 (68%)**| +All eligible study members were contacted: 2271 study members gave information, of which 1573 study members completed all 3 waves, 449 completed 2 waves and 249 completed one wave 
-|Wave 1 Postal|912|n/a|5 (0.5%)|1 (0.1%)|||**616 (68%)**+ 
-|Wave 2 Online|2547|||22 (0.9%)|||**1512 (59%)**+^-^Wave 1^Wave 2^Wave 3^ 
-|Wave 2 Postal|938|n/a|5 (0.5%)|6 (0.6%)|489 (52%)||**547 (58%)**+|Provided information|1876|2116|1913
-|Wave 3 Online|1559||2 (0.1%)|||1559 (100%)|**1376 (55%)**+|Cumulative total of deaths|1225|1246|1272
-|Wave 3 Postal|913|n/a|8 (0.9%)||||**514 (56%)**|+|Cumulative permanent refusals (withdrawn from the study)|637|638|638
 +|Failure to contact|855|852|845
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