Response rates are declining on delicate yet important questions such as questions pertaining to the height and weight of individuals. This in turn can have substantial effects on the generalizability of findings.
Svarhlutfall fyrir viðkvæmar en jafnframt mikilvægar spurningar um breytur á borð við hæð og þyngd getur haft veruleg áhrif á alhæfingagildi rannsókna.