The effect of a direct payment or a lottery on questionnaire response rates: a randomised controlled trial

P J Roberts, C Roberts, B Sibbald, D J Torgerson

Research output: Contribution to journalArticlepeer-review

Original languageEnglish
Pages (from-to)71-72
Number of pages2
JournalJournal of epidemiology and community health
Issue number1
Publication statusPublished - Jan 2000

Cite this