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Table 1 Patients' reports of "Ask"* on immediate exit cards versus delayed telephone surveys

From: Does delayed measurement affect patient reports of provider performance? Implications for performance measurement of medical assistance with tobacco cessation: A Dental PBRN study

   Immediate exit card
Telephone survey @ 1–6 months later   Did the dentist or dental staff ASK you if used tobacco?
  Total N = 150 Yes N = 32 (21%) No N = 118 (79%)
Did the dentist or dental staff ASK you if used tobacco? Yes N = 45 (30%) 16 29
  No N = 105 (70%) 16 89
   Sensitivity = 50% (95% CI 31%, 68%) Specificity = 75% (95% CI 66%, 82%)
   Agreement 105/150= 70% (95% CI 62%, 77%)
  1. * Ask (Patients' report of Tobacco Use Screening from providers): 150 patients from six dental practices, the DTC.net study, 2006