Table 2.

Multiple linear regression model of health care provider effects on smoking quit rates

VariableB95% CI*tP
Type of intervenor
    Teams (reference)
    Physician4.131.30 to 6.962.960.005
    Nurse−0.86−3.14 to 1.42−0.770.45
    Dentist0.73−3.05 to 4.520.390.69
No. medical providers in the intervention1.23−0.25 to 2.721.690.09
Assist0.29−2.00 to 1.42−0.340.73
Assess0.99−3.29 to 1.30−0.880.38
Arrange0.0007−1.05 to 1.050.000.99
Time period until quit rates were assessed
    <6 mo (reference)
    6 to <12 mo−0.99−3.70 to 1.70−0.750.46
    12 mo−2.32−4.92 to 0.26−1.830.09
Total in-person time of the intervention
    <75 min−0.96−3.59 to 1.67−0.740.46
    75 min to 2 h−1.66−4.04 to 0.72−1.420.16
    >2 h (reference)
Year of publication
    1990-19926.181.80 to 10.562.860.007
    1993-19950.58−2.74 to 3.900.350.73
    1996-20000.99−2.06 to 4.050.660.51
    2001-2003 (reference)
  • * 95% CIs for B.

  • Two sided.

  • Measured as continuous variables.