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Table 1 Treatment Enrollment by Randomization Group

From: Evaluation of a population-level strategy to promote tobacco treatment use among insured smokers: a pragmatic, randomized trial

  Enrolled in Treatment within 5 monthsa
All participants Network participantsb GPD participantsb
N n (%) Risk Difference
(95% CI)c
N n (%) Risk Difference
(95% CI)c
N n (%) Risk Difference
(95% CI)c
No letter (NL) 962 9 (0.9) Referent 422 1 (0.2) Referent 540 8 (1.5) Referent
Money (MML) 955 5 (0.5) − 0.004 (− 0.012, 0.003) 410 1 (0.2) 0.000 (− 0.007, 0.007) 545 4 (0.7) − 0.007 (− 0.020, 0.005)
Health (HML) 946 7 (0.7) − 0.002 (− 0.010, 0.006) 441 1 (0.2) − 0.000 (− .006, 0.006) 505 6 (1.2) − 0.003 (− 0.017, 0.011)
Values (VML) 963 9 (0.9) 0.000 (− 0.009, 0.009) 425 3 (0.7) 0.005 (− 0.005, 0.014) 538 6 (1.1) − 0.004 (− 0.017, 0.010)
Referral (ROL) 941 10 (1.1) 0.001 (− 0.008, 0.010) 418 1 (0.2) 0.000 (− 0.007, 0.007) 523 9 (1.7) − 0.002 (− 0.013, 0.017)
  1. aEnrollment in comprehensive tobacco treatment program within 5 months post-letter (n = 4767)
  2. bGroup Practice Division (GPD) participants received care and coverage from the health plan. Network participants received insurance coverage only from the health plan
  3. cCI Confidence interval