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Clinical Trial
. 2001 Aug;55(8):595-6.
doi: 10.1136/jech.55.8.595.

Provision of pen along with questionnaire does not increase the response rate to a postal survey: a randomised controlled trial

T J Clark  1 , K S Khan, J K Gupta
Affiliations
Clinical Trial

Provision of pen along with questionnaire does not increase the response rate to a postal survey: a randomised controlled trial

T J Clark et al. J Epidemiol Community Health. 2001 Aug.
No abstract available

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References

    1. BMJ. 1998 Mar 28;316(7136):975-6 - PubMed
    1. BMJ. 1996 Sep 21;313(7059):732-3; discussion 733-4 - PubMed

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