title: Do additional recontacts to increase response rate improve physician survey data quality?
abstract: BACKGROUND
  Although response rates for physician surveys have been decreasing, it is not clear whether this trend is associated with an increase in survey nonresponse bias. One means for assessing potential bias is to conduct a level-of-effort analysis that compares data estimates for respondents interviewed during the first recruitment contact to respondents interviewed at later recontact cycles.
  
  
  METHODS
  We compared early and later responders within the Survey of Physician Attitudes Regarding the Care of Cancer Survivors with respect to both demographic characteristics and aggregate survey responses to items on survivor care knowledge, attitudes, and practices.
  
  
  RESULTS
  Accumulating additional completions across each of 4 respondent contact attempts improved weighted response rates (35.0%, 46.9%, 52.3%, and 57.6%, respectively). However, the majority of estimates for analyzed variables remained relatively unchanged over additional cycles of recontact.
  
  
  CONCLUSIONS
  We conclude that additional respondent recontact attempts, especially beyond a single recontact, had little influence on key data distributions, suggesting that these were ineffective in reducing nonresponse bias. Further, the conduct of additional recruitment recontacts was an inefficient means for increasing statistical power. For the conduct of physician surveys, a practice that may in some cases be cost-effective, while also controlling total survey error, is to establish a larger initial sample; to either eliminate nonresponse follow-up or to limit this to one recontact; and to accept a somewhat lower final overall survey response rate.
authors: *National Cancer Institute, Bethesda, MD †American Cancer Society Inc., Atlanta, GA ‡Westat, Rockville, MD.
authors: Gordon B
authors: GB
authors: Willis
authors: Tenbroeck
authors: T
authors: Smith
authors: Hyunshik J
authors: HJ
authors: Lee
mesh_terms: D015982:Bias; D003625:Data Collection / Q000379:methods*; D019538:Health Care Surveys / Q000379:methods*; D006801:Humans; D010820:Physicians / Q000706:statistics & numerical data*; D012107:Research Design; D013997:Time Factors
references: Am J Public Health. 1985 Nov;75(11):1338-40
references: 4051077
references: Eval Health Prof. 2007 Dec;30(4):303-21
references: 17986667
references: Am J Prev Med. 2001 Jan;20(1):61-7
references: 11137777
references: Med Care. 2002 Jul;40(7):596-605
references: 12142775
references: Eval Health Prof. 2003 Mar;26(1):23-42
references: 12629920
references: J Gen Intern Med. 2011 Dec;26(12):1403-10
references: 21785923
references: JAMA. 2012 May 2;307(17):1805-6
references: 22550194
references: Eval Health Prof. 2013 Mar;36(1):106-26
references: 23378504