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Table 3 Patient-, physician- and system-level factors associated with delivery of screening by treatment arm

From: Physician versus non-physician delivery of alcohol screening, brief intervention and referral to treatment in adult primary care: the ADVISe cluster randomized controlled implementation trial

  PCP Arm NPP & MA Arm
Coefficient value Std. err. OR 95% CI p value Coefficient value Std. err. OR 95% CI p value
Patient level
 Age
  18–24 vs. ≥60 −0.1018 0.0430 0.90 (0.83, 0.98) 0.018 −0.1726 0.0656 0.84 (0.74 , 0.96) 0.009
  25–44 vs. ≥60 −0.1582 0.0303 0.85 (0.80, 0.91) 0.000 −0.1329 0.0426 0.88 (0.81, 0.95) 0.002
  45–59 vs. ≥60 −0.1074 0.0280 0.90 (0.85, 0.95) 0.000 −0.1319 0.0408 0.88 (0.81, 0.95) 0.001
 Gender
  Female vs. Male −0.2447 0.0217 0.78 (0.75, 0.82) 0.000 −0.2008 0.0305 0.82 (0.77, 0.87) 0.000
 Comorbid psychiatric conditions
  Yes vs. no 0.1231 0.0269 1.13 (1.07, 1.19) 0.000 0.2436 0.0383 1.28 (1.18, 1.38) 0.000
 Chronic diseases
  Yes vs. no 0.1934 0.0243 1.21 (1.16, 1.27) 0.000 0.3407 0.0345 1.41 (1.31, 1.50) 0.000
Physician level
 Age
  (per 1 year increase) −0.2183 0.0034 0.80 (0.80, 0.81) 0.000      
 Gender
  Female vs. male 1.1647 0.0247 3.21 (3.05, 3.36) 0.000      
 Race/ethnicity
  Non-white vs. white 1.4355 0.0263 4.20 (3.99, 4.42) 0.000      
 Years of services at the health plan
  (per 1 year increase) 0.2587 0.0032 1.30 (1.29, 1.30) 0.000      
 Specialty
  Non-internal medicine vs. internal medicine 3.0877 0.0366 21.93 (20.41, 23.56) 0.000      
System level
 Colocation of AOD and primary care departments
  Yes vs. no −2.3244 0.0689 0.10 (0.09, 0.11) 0.000 −0.4432 0.2274 0.64 (0.41, 1.00) 0.051
 MA/PCP ratio at the clinic −0.4393 0.0493 0.64 (0.59, 0.71) 0.000 3.0850 0.0748 21.87 (18.89, 25.32) 0.000
 Ave. visit time 0.3606 0.0097 1.43 (1.41, 1.46) 0.000 0.1379 0.0104 1.15 (1.12, 1.17) 0.000
 Number of PCPs trained at the clinic −0.0387 0.0047 0.96 (0.95, 0.97) 0.000      
  1. A three-level multivariate logistic model adjusting for clustering effects within physician and clinic was run for each of the two intervention arms
  2. PCP primary care physicians, NPP non-physician providers, MA medical assistants, AOD alcohol and other drug