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Table 3 Adjusted Utilization and Expenditures of CBOC, VAMC and Crossover Patients in 2000–2001

From: Utilization and expenditures of veterans obtaining primary care in community clinics and VA medical centers: an observational cohort study

  Odds Ratio (for two-part models only) Difference in predicted Visits or admissions per patient per year Difference in Predicted Expenditures Per Patient Per Year
  CBOC Crossover CBOC Crossover CBOC Crossover
Outpatient       
   Primary Carea -- -- 0.10 (0.03)*** 1.34 (0.04)*** -71 (5)*** 130 (6)***
   Specialty Careb 0.46 (0.01)*** 1.10 (0.03) -1.42 (0.07)*** -0.10 (0.08) -339 (33)*** 60 (47)
   Mental Healthb 0.78 (0.02)*** 1.14 (0.03)*** -1.85 (0.35)*** -0.60 (0.35). -282 (43)*** -78 (47).
   Pharmacya -- -- -- -- -81 (20)*** 103 (17)***
   Radiologyb 0.41 (0.01)*** 1.05 (0.02)* -0.39 (0.02)*** 0.03 (0.03) -58 (14)*** 34 (8)***
   Laboratoryb 0.45 (0.01)*** 0.90 (0.03)*** -0.41 (0.04)*** 0.31 (0.04)*** -34 (4)*** 29 (16).
Total Outpatienta -- -- -- -- -923 (39)*** 364 (52)***
Inpatientb 0.48 (0.02)*** 1.08 (0.03) -0.12 (0.04)*** 0.01 (0.03) -109 (577) 81 (497)
OVERALLa -- -- -- -- -1551 (70)*** 491 (91)***
   Sample Size 126,956 Variable Variable
  1. Reference Group is VAMC patients; ***P-value < 0.0001, **P-value < 0.001, *P-value < 0.01;
  2. Utilization and expenditure regressions control for age, age-squared, female gender, age and gender interaction, marital status, race, veteran percent service connection, distance, DCG risk score, copay status and time (2000);
  3. All analyses were adjusted for sampling weights;
  4. a – one-part models of utilization and costs estimated on the entire sample and odds of use was not estimated
  5. b – two-part models of utilization and costs estimated on veterans with use > 0 and odds of use estimated on entire sample